Dubai Corporation for Ambulance Services (DCAS) Exam — Questions and Answers

Question 1: Post-intubation sedation and analgesia in the pre-hospital setting is important because:

Sedation improves haemodynamics in all patients
Paralysis from RSI wears off and an awake, intubated patient will fight the tube and hyperventilate (Correct answer)
All intubated patients require neuromuscular blockade indefinitely
Sedation reduces the need for monitoring

Correct answer: Paralysis from RSI wears off and an awake, intubated patient will fight the tube and hyperventilate

Neuromuscular blockade from succinylcholine wears off in 8-10 minutes; ongoing sedation and analgesia prevent patient awareness, fighting against the tube, self-extubation, and dangerous sympathetic responses.

Question 2: What is the DCAS approach to managing diabetic emergencies?

Always administer insulin
Only provide oral fluids
Diabetes emergencies do not require ambulance care
Check blood glucose level, treat hypoglycemia with glucose/dextrose, manage DKA with IV fluids, and transport for definitive care (Correct answer)

Correct answer: Check blood glucose level, treat hypoglycemia with glucose/dextrose, manage DKA with IV fluids, and transport for definitive care

DCAS diabetic emergency management begins with blood glucose assessment: hypoglycemia is treated with glucose administration, while diabetic ketoacidosis (DKA) requires IV fluid resuscitation and rapid transport for insulin therapy.

Question 3: Vasopressin is used in septic shock as a vasopressor because:

It reverses the coagulopathy of sepsis
It also provides inotropic support
It is more potent than norepinephrine at all doses
It acts on V1 receptors independently of adrenoceptors — effective when catecholamine levels are already maximally elevated (Correct answer)

Correct answer: It acts on V1 receptors independently of adrenoceptors — effective when catecholamine levels are already maximally elevated

In refractory septic shock, endogenous vasopressin is depleted; exogenous vasopressin acts on V1 receptors (vascular smooth muscle) through a non-adrenergic mechanism, providing vasoconstriction when adrenergic receptors are downregulated.

Question 4: In the UAE pre-hospital setting, which drug is typically used as first-line treatment for a paediatric patient in status epilepticus without IV access?

Rectal paraldehyde
Intranasal or buccal midazolam (Correct answer)
IV valproate loading dose
IV phenobarbital

Correct answer: Intranasal or buccal midazolam

Intranasal or buccal midazolam is the preferred first-line agent when IV access is unavailable in paediatric status epilepticus due to ease of administration and rapid onset.

Question 5: Termination of resuscitation (TOR) criteria in out-of-hospital cardiac arrest for paramedics typically include:

Patient age greater than 65 years
Any unwitnessed arrest
Arrest duration greater than 10 minutes
Arrest not witnessed, no bystander CPR, no ROSC after 3 analyses, and no shockable rhythm ever (Correct answer)

Correct answer: Arrest not witnessed, no bystander CPR, no ROSC after 3 analyses, and no shockable rhythm ever

Basic life support TOR rules consider multiple factors: unwitnessed arrest, absence of bystander CPR, failure to achieve ROSC after adequate ALS, and no shockable rhythm — each reducing survival probability to near zero.

Question 6: The current thrombolysis (tPA) time window from symptom onset for eligible ischaemic stroke patients is generally:

Up to 12 hours for all patients
Up to 1 hour
Up to 3–4.5 hours (Correct answer)
Up to 6 hours only for posterior circulation

Correct answer: Up to 3–4.5 hours

The established tPA treatment window for ischaemic stroke is 3–4.5 hours from symptom onset in eligible patients, making rapid pre-hospital identification critical.

Question 7: How should DCAS paramedics manage symptomatic bradycardia?

Only provide oxygen therapy
Immediately defibrillate
No treatment is needed
Administer atropine 500mcg IV, consider transcutaneous pacing if atropine is ineffective (Correct answer)

Correct answer: Administer atropine 500mcg IV, consider transcutaneous pacing if atropine is ineffective

DCAS protocols for symptomatic bradycardia include IV atropine 500mcg (up to 3mg total), and if ineffective, transcutaneous pacing to maintain adequate heart rate and perfusion.

Question 8: Intraosseous (IO) access is indicated when:

IV access is unavailable only in paediatric patients
The patient has no visible veins but is haemodynamically stable
IV access cannot be obtained within 2 attempts or 90 seconds in a critically ill patient (Correct answer)
The patient specifically requests it

Correct answer: IV access cannot be obtained within 2 attempts or 90 seconds in a critically ill patient

IO access provides rapid vascular access when IV insertion fails in time-critical emergencies, with flow rates and drug delivery comparable to central venous access — appropriate for all age groups in critical care.

Question 9: What are the '5 Rights' of medication administration that DCAS paramedics must follow?

Right ambulance, right crew, right hospital, right speed, right siren
Right form, right container, right seal, right batch, right supplier
Right patient, right drug, right dose, right route, right time (Correct answer)
Right color, right shape, right size, right label, right expiry

Correct answer: Right patient, right drug, right dose, right route, right time

The 5 Rights ensure medication safety: right patient (verify identity), right drug (check medication), right dose (verify amount), right route (correct administration method), and right time (appropriate timing).

Question 10: The first-line medication for anaphylaxis in a child is:

Hydrocortisone IV as first-line
Salbutamol nebuliser as sole treatment
Diphenhydramine (antihistamine) IV as first-line
Epinephrine (adrenaline) IM into the anterolateral thigh — 0.01mg/kg of 1:1000 (max 0.5mg) (Correct answer)

Correct answer: Epinephrine (adrenaline) IM into the anterolateral thigh — 0.01mg/kg of 1:1000 (max 0.5mg)

Epinephrine IM is the only first-line, life-saving treatment for anaphylaxis in children; antihistamines and corticosteroids are adjuncts only and should never delay or replace epinephrine.

Question 11: What considerations apply when DCAS paramedics manage elderly patients?

Treat identically to young adults
Only provide comfort measures
Elderly patients do not have medical emergencies
Consider polypharmacy, atypical symptom presentation, communication challenges, and increased fragility (Correct answer)

Correct answer: Consider polypharmacy, atypical symptom presentation, communication challenges, and increased fragility

Elderly patients may take multiple medications (polypharmacy), present with atypical symptoms (e.g., silent MI), have communication difficulties, and are more susceptible to fractures and hypothermia.

Question 12: The cricothyroid membrane is located:

Between the cricoid and the tracheal rings
Between the thyroid cartilage superiorly and the cricoid cartilage inferiorly (Correct answer)
Below the cricoid cartilage
Above the thyroid cartilage

Correct answer: Between the thyroid cartilage superiorly and the cricoid cartilage inferiorly

The cricothyroid membrane is palpable between the thyroid cartilage (Adam's apple) superiorly and the cricoid cartilage (ring) inferiorly — the landmark for emergency surgical airway access.

Question 13: A patient describes the worst headache of their life, with sudden onset ('thunderclap' headache). Which condition must be immediately suspected?

Subarachnoid haemorrhage (SAH) (Correct answer)
Tension headache exacerbation
Cervicogenic headache
Cluster headache

Correct answer: Subarachnoid haemorrhage (SAH)

A sudden-onset 'thunderclap' headache described as the worst of the patient's life is the classic presentation of subarachnoid haemorrhage until proven otherwise.

Question 14: The 'START' triage system categorises patients into which four groups?

Immediate (Red), Delayed (Yellow), Minor (Green), Expectant/Deceased (Black) (Correct answer)
Immediate, Urgent, Non-urgent, Deceased
Critical, Serious, Moderate, Minor
Priority 1, Priority 2, Priority 3, Priority 4

Correct answer: Immediate (Red), Delayed (Yellow), Minor (Green), Expectant/Deceased (Black)

START (Simple Triage and Rapid Treatment) uses colour coding: Red (immediate life-threatening, saveable), Yellow (delayed, serious but stable), Green (minor/walking wounded), Black (deceased or unsurvivable injuries).

Question 15: After intubation, the ETT should be secured to prevent:

Displacement (accidental extubation), right main bronchus migration, or oesophageal tube movement (Correct answer)
Movement of the tube from one hand to another
Only accidental extubation during transport
The patient from biting the tube

Correct answer: Displacement (accidental extubation), right main bronchus migration, or oesophageal tube movement

ETT security prevents tube displacement — accidental extubation (most dangerous), migration down the right main bronchus (causes single-lung ventilation), or oesophageal entry if the tube was not securely verified.

Question 16: In PALS, epinephrine for cardiac arrest is dosed at:

0.01mg/kg IV/IO every 3-5 minutes (maximum single dose 1mg) (Correct answer)
0.1mg/kg IV/IO every 5 minutes
1mg IV regardless of weight
0.1mg IV for all children

Correct answer: 0.01mg/kg IV/IO every 3-5 minutes (maximum single dose 1mg)

PALS epinephrine dosing is 0.01mg/kg (0.1ml/kg of 1:10,000) IV/IO every 3-5 minutes; the maximum single dose is 1mg to avoid excessive vasopressor effect.

Question 17: The nasopharyngeal airway (NPA) is preferred over the oropharyngeal airway (OPA) in which situation?

All paediatric patients under age 12
Patients with facial trauma and suspected basilar skull fracture
Semi-conscious patients with intact gag reflex, or patients with jaw clenching (trismus) (Correct answer)
Deeply unconscious patients with no gag reflex

Correct answer: Semi-conscious patients with intact gag reflex, or patients with jaw clenching (trismus)

The NPA is better tolerated in patients with some level of consciousness and an intact gag reflex; it does not trigger the gag response as readily as an OPA and can be used when mouth opening is restricted.

Question 18: Post-incident psychological support for DCAS paramedics following traumatic calls is provided through:

Reporting incidents to Dubai Police as standard practice
Critical Incident Stress Management (CISM) programmes including debriefing and peer support (Correct answer)
Only senior paramedics receive psychological support
No formal support — paramedics are expected to cope independently

Correct answer: Critical Incident Stress Management (CISM) programmes including debriefing and peer support

CISM programmes recognise that emergency service personnel are at high risk of post-traumatic stress; structured debriefing and peer support following traumatic incidents reduce the risk of PTSD and improve long-term wellbeing.

Question 19: Post-ROSC, the target systolic blood pressure in ACLS post-cardiac arrest care is:

At least 90 mmHg systolic (or MAP ≥65 mmHg) (Correct answer)
180-200 mmHg to improve cerebral perfusion
Normal BP is not a target — focus only on oxygenation
Below 80 mmHg to reduce myocardial oxygen demand

Correct answer: At least 90 mmHg systolic (or MAP ≥65 mmHg)

Post-ROSC haemodynamic goals include SBP ≥90 mmHg or MAP ≥65 mmHg to ensure adequate organ perfusion; vasopressors (norepinephrine) and IV fluids are used to achieve and maintain these targets.

Question 20: During ACLS, the rhythm check should occur every:

2 minutes (after each CPR cycle) (Correct answer)
Only when ROSC is clinically suspected
Every 30 compressions
5 minutes

Correct answer: 2 minutes (after each CPR cycle)

2-minute CPR cycles with rhythm checks at the end of each cycle maintain the recommended compression fraction (>80%) while allowing systematic assessment of rhythm and response to interventions.

Question 21: A postictal patient is unresponsive but breathing adequately. What is the most appropriate position?

Seated upright at 90 degrees
Supine with legs elevated
Prone position
Recovery (lateral) position (Correct answer)

Correct answer: Recovery (lateral) position

The recovery (lateral) position protects the airway from aspiration and maintains airway patency in a breathing but unresponsive postictal patient.

Question 22: A 60-year-old male presents with sudden-onset confusion, diaphoresis, and focal weakness. Blood glucose reads 2.1 mmol/L. What is the priority intervention?

Administer aspirin 300 mg
Administer IV dextrose 50% or glucagon IM (Correct answer)
Perform a 12-lead ECG
Activate stroke protocol

Correct answer: Administer IV dextrose 50% or glucagon IM

Hypoglycemia can mimic stroke; with a glucose of 2.1 mmol/L, correcting hypoglycemia with dextrose or glucagon is the priority before any stroke workup.

Question 23: Pre-hospital wound packing with haemostatic dressings (e.g., Combat Gauze) is indicated for:

All surface wounds regardless of severity
Wounds that have already stopped bleeding
Minor lacerations that are actively bleeding
Junctional haemorrhage (groin, axilla, neck) where tourniquets cannot be applied (Correct answer)

Correct answer: Junctional haemorrhage (groin, axilla, neck) where tourniquets cannot be applied

Junctional areas (groin, axillary, and neck) cannot be controlled with conventional tourniquets; haemostatic gauze packed firmly into the wound with direct manual pressure for 3-5 minutes controls these life-threatening bleeds.

Question 24: Tourniquet application for extremity haemorrhage should be placed:

At the most distal point of the limb
Over a joint for best compression
Directly over the wound
5-8cm proximal to the wound on the mid-shaft of the affected limb (Correct answer)

Correct answer: 5-8cm proximal to the wound on the mid-shaft of the affected limb

Tourniquets are applied 5-8cm proximal to the wound, mid-shaft (not over a joint), tightened until bleeding stops, time documented, and left in place until surgical haemostasis in hospital.

Question 25: How does DCAS integrate with Dubai's wider emergency response system?

DCAS only responds to traffic accidents
DCAS coordinates with Dubai Police, Civil Defence, and hospitals through a unified command system for major incidents (Correct answer)
DCAS operates independently with no coordination
DCAS only operates within hospitals

Correct answer: DCAS coordinates with Dubai Police, Civil Defence, and hospitals through a unified command system for major incidents

DCAS integrates with Dubai Police (999), Civil Defence, and hospital emergency departments through coordinated dispatch systems and unified incident command for multi-agency responses to major incidents.

Question 26: In ACLS, when is it appropriate to administer sodium bicarbonate during cardiac arrest?

Routinely after 10 minutes of CPR
Only after ROSC to correct arterial pH
As a first-line drug in all cardiac arrests
When specific reversible causes are present (hyperkalaemia, tricyclic overdose, pre-existing metabolic acidosis) (Correct answer)

Correct answer: When specific reversible causes are present (hyperkalaemia, tricyclic overdose, pre-existing metabolic acidosis)

Routine bicarbonate in cardiac arrest is not recommended as it worsens intracellular acidosis; it is specifically indicated for hyperkalaemia, tricyclic antidepressant overdose, and documented severe metabolic acidosis.

Question 27: Diazepam's mechanism of action in seizure management is:

Stimulating glycine receptors only in the spinal cord
Blocking NMDA glutamate receptors
Enhancing GABA-A receptor activity, increasing chloride channel opening and neuronal inhibition (Correct answer)
Blocking sodium channels in neurons

Correct answer: Enhancing GABA-A receptor activity, increasing chloride channel opening and neuronal inhibition

Benzodiazepines bind to GABA-A receptors and enhance the effect of GABA (the main inhibitory neurotransmitter), increasing the frequency of chloride channel opening, hyperpolarising neurons and reducing seizure activity.

Question 28: Which intervention is CONTRAINDICATED in a patient with a suspected haemorrhagic stroke?

Aspirin 300 mg administration (Correct answer)
ECG monitoring
Oxygen supplementation if SpO2 < 94%
IV access and fluid management

Correct answer: Aspirin 300 mg administration

Aspirin is contraindicated in haemorrhagic stroke as its antiplatelet effect worsens bleeding; it is only appropriate for confirmed ischaemic stroke.

Question 29: What is the DCAS protocol for managing unstable tachycardia?

Administer atropine
Wait for natural conversion
Give aspirin only
Perform synchronized cardioversion after sedation if the patient is hemodynamically unstable (Correct answer)

Correct answer: Perform synchronized cardioversion after sedation if the patient is hemodynamically unstable

For hemodynamically unstable tachycardia with pulse, DCAS protocols require synchronized cardioversion with appropriate sedation, as the unstable rhythm threatens organ perfusion and requires immediate electrical treatment.

Question 30: The 'Scene Safety' principle requires paramedics to:

Consider scene safety only in violent incidents
Ensure the scene is safe for themselves, their crew, bystanders, and patients before approaching (Correct answer)
Call for backup before assessing scene safety
Approach the patient immediately to begin treatment

Correct answer: Ensure the scene is safe for themselves, their crew, bystanders, and patients before approaching

Paramedics must assess scene safety before approaching, as an injured rescuer becomes a second patient — standard personal protective equipment, hazard identification, and situational awareness are mandatory.

Question 31: What is the DCAS protocol for managing patients experiencing allergic reactions?

Only provide antihistamines
Wait for allergy testing results
Classify severity (mild/moderate/severe/anaphylaxis), administer appropriate treatment from antihistamines to IM adrenaline, and monitor for biphasic reactions (Correct answer)
Only remove the allergen

Correct answer: Classify severity (mild/moderate/severe/anaphylaxis), administer appropriate treatment from antihistamines to IM adrenaline, and monitor for biphasic reactions

Allergic reaction management depends on severity: mild reactions may need only antihistamines, while anaphylaxis requires IM adrenaline, IV fluids, and airway management, with monitoring for delayed biphasic reactions.

Question 32: The 'DCAS dispatch priority system' categorises emergency calls into which primary tiers?

Priority 1 (life-threatening/lights and sirens), Priority 2 (urgent but stable), Priority 3 (non-urgent/routine) (Correct answer)
Critical, High, Medium, Low, Zero
Alpha, Bravo, Charlie, Delta, Echo
Red, Amber, Green, White

Correct answer: Priority 1 (life-threatening/lights and sirens), Priority 2 (urgent but stable), Priority 3 (non-urgent/routine)

DCAS uses a priority dispatch system categorising calls by severity to allocate appropriate resources and response times: P1 for immediately life-threatening emergencies, P2 for urgent, and P3 for routine calls.

Question 33: Which drug is used to treat bradycardia caused by beta-blocker overdose refractory to atropine?

High-dose glucagon IV (Correct answer)
Amiodarone
Digoxin immune Fab
Adenosine

Correct answer: High-dose glucagon IV

Glucagon activates adenylate cyclase independently of beta-adrenoceptors, bypassing the beta-blockade to increase heart rate and contractility — making it the antidote of choice for beta-blocker overdose.

Question 34: Signs of decompensated shock in a paediatric patient include:

Normal blood pressure with mild tachycardia
Fever and tachycardia only
Tachycardia and prolonged capillary refill (compensated shock) — not yet decompensated
Hypotension, altered mental status, and mottled/cold extremities — late and ominous signs (Correct answer)

Correct answer: Hypotension, altered mental status, and mottled/cold extremities — late and ominous signs

Children compensate remarkably well — hypotension is a late and ominous sign indicating decompensation; earlier signs (tachycardia, prolonged CRT, cool extremities) indicate compensated shock and should trigger intervention.

Question 35: Which haemorrhage control technique is appropriate for a suspected pelvic fracture with haemodynamic instability?

Tourniquet application to the pelvis
Pelvic binder application to reduce pelvic volume and tamponade haemorrhage (Correct answer)
Elevation of the pelvis
Direct pressure with gauze only

Correct answer: Pelvic binder application to reduce pelvic volume and tamponade haemorrhage

A pelvic binder closes the pelvic ring, reducing the potential space for haemorrhage and providing tamponade effect to control life-threatening internal bleeding from pelvic fractures.

Question 36: Pre-hospital management of an open femur fracture includes:

Antibiotics in the ambulance as the primary treatment
Attempting surgical washout in the field
Haemorrhage control, moist sterile dressing over wound, traction splint if applicable, analgesia, and IV access (Correct answer)
Tight circumferential pressure bandaging that may compromise vascularity

Correct answer: Haemorrhage control, moist sterile dressing over wound, traction splint if applicable, analgesia, and IV access

Open fractures require covering with moist sterile dressings to reduce contamination risk, haemorrhage control, analgesia, IV access, and transport — traction may apply but the wound should not be manipulated.

Question 37: What protocols does DCAS follow for managing obstetric emergencies?

Only provide emotional support
Assess for imminent delivery, manage complications such as hemorrhage and eclampsia, and prepare for neonatal resuscitation (Correct answer)
Obstetric cases are not handled by ambulance
Only transport to hospital without assessment

Correct answer: Assess for imminent delivery, manage complications such as hemorrhage and eclampsia, and prepare for neonatal resuscitation

DCAS protocols cover assessment of labor progress, imminent delivery management, hemorrhage control, pre-eclampsia/eclampsia treatment with magnesium sulfate, and neonatal resuscitation preparedness.

Question 38: When assessing a patient with suspected pelvis fracture, which physical examination manoeuvre should be avoided?

Gentle log roll
Repeated manual pelvic compression tests (springing the pelvis) (Correct answer)
Auscultation of the abdomen
Assessment of leg length discrepancy

Correct answer: Repeated manual pelvic compression tests (springing the pelvis)

Repeated manual pelvic compression (springing) can disrupt forming blood clots and worsen haemorrhage; one assessment is performed if clinically indicated, then a pelvic binder is applied without further manipulation.

Question 39: In a paediatric patient, the earliest reliable sign of deteriorating haemodynamic status is:

Altered mental status
Decrease in urine output below 0.5ml/kg/hr
Tachycardia and prolonged capillary refill time (CRT >2 seconds) (Correct answer)
Hypotension

Correct answer: Tachycardia and prolonged capillary refill time (CRT >2 seconds)

Tachycardia and prolonged CRT are the earliest measurable signs of compensated shock in children, preceding hypotension (a late sign) by a considerable margin — allowing earlier intervention if recognised.

Question 40: The maximum compression depth for adult CPR according to current guidelines is:

Exactly 4cm
At least 3cm
At least 5cm but not more than 6cm (Correct answer)
As deep as possible without limit

Correct answer: At least 5cm but not more than 6cm

Current guidelines recommend 5-6cm compression depth in adults to generate adequate cardiac output during CPR; compressions deeper than 6cm are associated with increased injury risk without additional survival benefit.

Question 41: In traumatic cardiac arrest, which reversible cause should be addressed first?

Cardiac tamponade — pericardiocentesis is always first
Hypoxia — intubation should precede everything
Tension pneumothorax — bilateral thoracostomy should be performed immediately (Correct answer)
Hypovolaemia — 2L fluid bolus should be given first

Correct answer: Tension pneumothorax — bilateral thoracostomy should be performed immediately

Bilateral thoracostomy for presumed bilateral tension pneumothorax is the first priority in traumatic cardiac arrest as it is rapidly reversible in the field; tamponade may require resuscitative thoracotomy depending on the setting.

Question 42: Magnesium sulphate's mechanism of action in eclampsia treatment is:

Causing uterine relaxation only
Reducing blood pressure through direct vasodilation
Blocking NMDA receptors and reducing neuronal excitability, preventing seizure recurrence (Correct answer)
Binding to clotting factors

Correct answer: Blocking NMDA receptors and reducing neuronal excitability, preventing seizure recurrence

Magnesium sulphate blocks NMDA glutamate receptors, reducing neuronal excitability and preventing seizure propagation; it also causes some vasodilation (contributing to antihypertensive effect) and uterine muscle relaxation.

Question 43: What is the SAMPLE history-taking mnemonic used by Dubai ambulance paramedics?

Sleep, Activity, Meals, Pain, Location, Equipment
Signs, Allergies, Medications, Past history, Last meal, Events leading to illness (Correct answer)
Symptoms, Age, Medical records, Prescriptions, Labs, Examinations
Swelling, Airway, Monitoring, Pulse, Lungs, ECG

Correct answer: Signs, Allergies, Medications, Past history, Last meal, Events leading to illness

SAMPLE stands for Signs/Symptoms, Allergies, Medications, Past medical history, Last oral intake, and Events leading to the present illness, providing a structured approach to patient history-taking.

Question 44: Massive haemothorax is defined as initial drainage of more than:

300ml
1500ml of blood from the chest on tube thoracostomy (Correct answer)
500ml
750ml

Correct answer: 1500ml of blood from the chest on tube thoracostomy

Massive haemothorax is defined by drainage of ≥1500ml immediately on chest tube insertion, or ongoing haemorrhage >200ml/hour — indicating injury to major vessels requiring surgical intervention.

Question 45: The AEIOU-TIPS mnemonic is used to assess causes of altered consciousness. What does the letter 'T' represent?

Trauma or Toxins (Correct answer)
Tachycardia
Temperature (hypo/hyperthermia)
Thrombosis only

Correct answer: Trauma or Toxins

In AEIOU-TIPS, 'T' stands for Trauma or Toxins (including drugs and poisoning), both of which are common reversible causes of altered level of consciousness.

Question 46: In the pre-hospital setting, the maximum recommended on-scene time for a critical trauma patient is:

As long as needed to stabilise the patient fully
30 minutes
1 hour
Less than 10 minutes (platinum 10 minutes) (Correct answer)

Correct answer: Less than 10 minutes (platinum 10 minutes)

The 'Platinum 10 Minutes' guideline aims to keep on-scene time under 10 minutes for critical trauma patients, limiting field interventions to essential life-saving measures before transport to definitive care.

Question 47: Midazolam's advantage over diazepam for pre-hospital seizure management includes:

Greater efficacy at equal doses
IM, intranasal, and buccal routes of administration — more options than IV-dependent diazepam (Correct answer)
Longer duration of action
No risk of respiratory depression

Correct answer: IM, intranasal, and buccal routes of administration — more options than IV-dependent diazepam

Midazolam can be given IM, intranasally, or buccally without IV access, providing rapid effective benzodiazepine therapy even when venous access is unavailable — a major practical advantage in seizure management.

Question 48: Cricothyrotomy is indicated in which situation?

Can't intubate, can't oxygenate (CICO) — failed airway with life-threatening hypoxia (Correct answer)
Any failed first intubation attempt
Patients with known laryngeal cancer
Patients with cervical spine injury

Correct answer: Can't intubate, can't oxygenate (CICO) — failed airway with life-threatening hypoxia

Cricothyrotomy (surgical or needle) is a rescue intervention reserved for the CICO scenario — when all other airway methods have failed and the patient is dying of hypoxia — providing direct tracheal access below the obstruction.

Question 49: The preferred initial fluid for haemorrhagic shock in modern damage control resuscitation is:

Colloid solutions (albumin or gelatin)
2 litres of normal saline as an immediate bolus
Blood products in a 1:1:1 ratio (packed red cells : plasma : platelets) where available (Correct answer)
Dextrose 5% in water

Correct answer: Blood products in a 1:1:1 ratio (packed red cells : plasma : platelets) where available

Modern damage control resuscitation prioritises blood products in balanced ratios to replace haemorrhage losses while preserving coagulation, avoiding the dilutional coagulopathy caused by large volumes of crystalloid.

Question 50: Spinal shock is defined as:

Complete permanent loss of motor function
Transient depression of all spinal cord function below the level of injury, with flaccid paralysis and loss of reflexes (Correct answer)
Haemorrhagic shock in a spinal cord injured patient
Hypotension caused by spinal cord injury (neurogenic shock)

Correct answer: Transient depression of all spinal cord function below the level of injury, with flaccid paralysis and loss of reflexes

Spinal shock is a temporary physiological phenomenon (hours to weeks) of complete suppression of cord function below the injury level, presenting as flaccid paralysis and areflexia — distinct from the haemodynamic neurogenic shock.

Question 51: The 'Rule of Nines' estimates total body surface area (TBSA) burned; the head and neck account for:

1% in adults
9% in adults (Correct answer)
4.5% in adults
18% in adults

Correct answer: 9% in adults

In adults, the Rule of Nines allocates: head and neck = 9%, each arm = 9%, each leg = 18%, anterior trunk = 18%, posterior trunk = 18%, and perineum = 1%. Children have proportionally larger heads.

Question 52: The Dubai Civil Defence (DCD) is responsible for which function at a major incident?

Fire suppression, decontamination, urban search and rescue — separate from DCAS medical function (Correct answer)
All medical care at the scene
Air ambulance coordination exclusively
Hospital diversion management

Correct answer: Fire suppression, decontamination, urban search and rescue — separate from DCAS medical function

DCD handles fire, hazardous materials decontamination, and search and rescue operations; DCAS provides medical care — the two agencies operate distinct roles under integrated incident command at major incidents.

Question 53: The 'TICLS' mnemonic used in the paediatric Appearance assessment of the PAT stands for:

Tachypnoea, Intercostal retractions, Crepitations, Listening, Sensorium
Temperature, Irritability, Colour, Level of consciousness, Skin condition
Tachycardia, Infection, Cyanosis, Lethargy, Shock
Tone, Interactiveness, Consolability, Look/gaze, Speech/cry (Correct answer)

Correct answer: Tone, Interactiveness, Consolability, Look/gaze, Speech/cry

TICLS assesses appearance: Tone (muscle tone and movement), Interactiveness (response to environment), Consolability (response to comfort), Look/gaze (eye contact and attention), and Speech/cry (quality and appropriateness).

Question 54: What quality improvement measures does DCAS implement?

Only patient satisfaction surveys
Clinical audit, case review, patient feedback analysis, performance metrics tracking, and continuous education programs (Correct answer)
No quality improvement programs exist
Quality is only measured by response times

Correct answer: Clinical audit, case review, patient feedback analysis, performance metrics tracking, and continuous education programs

DCAS quality improvement includes clinical audits of patient care records, case reviews for complex incidents, analysis of patient feedback, tracking of clinical performance metrics, and mandatory continuing education.

Question 55: Damage Control Surgery (DCS) focuses on:

Rapid control of haemorrhage and contamination, temporary closure, and ICU resuscitation before definitive repair (Correct answer)
Laparoscopic repair of all penetrating abdominal wounds
Non-operative management of all abdominal injuries
Complete definitive surgical repair at initial operation regardless of physiological status

Correct answer: Rapid control of haemorrhage and contamination, temporary closure, and ICU resuscitation before definitive repair

DCS limits initial surgery to abbreviated haemorrhage and contamination control, then resuscitates the patient in ICU to correct the lethal triad before returning for definitive repair when physiologically optimised.

Question 56: Paediatric hypotension (systolic BP below lower limit of normal) is estimated using the formula:

Lower limit SBP = 70 + (2 × age in years) for children 1-10 years (Correct answer)
Lower limit SBP = 90 mmHg for all children
Lower limit SBP = 100 mmHg minus age in years
Lower limit SBP = 60 mmHg for infants, 80 mmHg for children

Correct answer: Lower limit SBP = 70 + (2 × age in years) for children 1-10 years

The formula 70 + (2 × age in years) estimates the lower limit of normal systolic BP for children aged 1-10; values below this indicate hypotension requiring urgent intervention.

Question 57: Under Dubai's MCI protocols, hospital pre-notification provides receiving facilities with:

Full clinical histories of each patient
Requests for specific specialist consultants
Number of casualties, triage category distribution, and estimated time of arrival for resource preparation (Correct answer)
Detailed scene descriptions for administrative purposes only

Correct answer: Number of casualties, triage category distribution, and estimated time of arrival for resource preparation

Pre-notification allows hospitals to activate major incident protocols, summon additional staff, prepare operating theatres, and organise resuscitation teams before casualties arrive, maximising hospital surge capacity.

Question 58: The 'Lethal Triad' in trauma refers to:

Hypothermia, acidosis, and coagulopathy — three mutually reinforcing killers in haemorrhagic shock (Correct answer)
Hypotension, hypoxia, and hyponatraemia
Head injury, chest injury, and abdominal injury
Tachycardia, hypotension, and anaemia

Correct answer: Hypothermia, acidosis, and coagulopathy — three mutually reinforcing killers in haemorrhagic shock

The lethal triad: hypothermia (impairs clotting and cardiac function), acidosis (from tissue hypoperfusion), and coagulopathy (failure of clotting mechanisms) — each worsens the others in a deadly cycle.

Question 59: For infants in cardiac arrest when two rescuers are present, compressions are performed using:

One-hand technique using palm
Two-finger technique on the lower sternum
Two-thumb encircling technique (thumbs on lower sternum, hands encircling the chest) (Correct answer)
Heel of hand as in adult CPR

Correct answer: Two-thumb encircling technique (thumbs on lower sternum, hands encircling the chest)

The two-thumb encircling technique is the preferred method for two rescuers: thumbs on the lower sternum with fingers encircling the chest, generating higher pressures and better coronary perfusion than the two-finger method.

Question 60: During RSI, the typical induction dose of ketamine for a haemodynamically compromised patient is:

4-5mg/kg IV regardless of haemodynamics
0.1mg/kg IV
10mg fixed dose for all patients
1-2mg/kg IV (reduced dose for haemodynamic compromise vs 1-2mg/kg standard) (Correct answer)

Correct answer: 1-2mg/kg IV (reduced dose for haemodynamic compromise vs 1-2mg/kg standard)

Ketamine 1-2mg/kg IV provides dissociative anaesthesia with haemodynamic preservation (sympathomimetic properties) — doses at the lower end are used in haemodynamically compromised patients to avoid catecholamine depletion.

Question 61: What post-resuscitation care should DCAS paramedics provide after return of spontaneous circulation (ROSC)?

Stop all monitoring
Discontinue IV access
Maintain airway, target SpO2 94-98%, obtain 12-lead ECG, maintain systolic BP >90mmHg, and consider targeted temperature management (Correct answer)
Simply transport to nearest hospital

Correct answer: Maintain airway, target SpO2 94-98%, obtain 12-lead ECG, maintain systolic BP >90mmHg, and consider targeted temperature management

Post-ROSC care includes airway management, titrating oxygen to SpO2 94-98%, 12-lead ECG to identify STEMI, maintaining adequate blood pressure, and preparing for targeted temperature management at hospital.

Question 62: The correct pre-hospital dose of aspirin for suspected STEMI is:

600mg IV
150mg sublingual
75mg oral
300mg (chewed, not swallowed whole, for rapid absorption) (Correct answer)

Correct answer: 300mg (chewed, not swallowed whole, for rapid absorption)

Aspirin 300mg chewed (not swallowed whole) achieves faster absorption and platelet inhibition through COX-1 inhibition, reducing further thrombus formation in suspected acute coronary syndrome.

Question 63: In the trauma patient, haemothorax is suspected when:

Tracheal deviation away from the affected side
Normal breath sounds with pleuritic chest pain
Absent breath sounds and hyper-resonance to percussion
Absent breath sounds, dull percussion, and signs of hypovolaemic shock after chest trauma (Correct answer)

Correct answer: Absent breath sounds, dull percussion, and signs of hypovolaemic shock after chest trauma

Haemothorax presents with decreased/absent breath sounds and dullness to percussion (blood in pleural space) combined with signs of haemodynamic compromise; tracheal deviation occurs in tension pneumothorax, not simple haemothorax.

Question 64: What is the recommended duration of CPR before reassessing rhythm in DCAS protocols?

10 minutes
5 minutes
30 seconds
2 minutes (5 cycles of 30:2) (Correct answer)

Correct answer: 2 minutes (5 cycles of 30:2)

DCAS protocols recommend 2 minutes of uninterrupted CPR (approximately 5 cycles of 30:2) before pausing briefly to reassess the cardiac rhythm and check for signs of return of spontaneous circulation.

Question 65: What are the contraindications for morphine administration by DCAS paramedics?

Only allergy to morphine
There are no contraindications
Morphine is never used pre-hospital
Respiratory depression, hypotension, head injury with altered consciousness, known allergy, and MAOI use (Correct answer)

Correct answer: Respiratory depression, hypotension, head injury with altered consciousness, known allergy, and MAOI use

Morphine contraindications include respiratory depression (rate <10/min), significant hypotension, head injury with altered consciousness (masks neurological signs), known allergy, and concurrent MAOI medication use.

Question 66: In PALS, the primary cause of cardiac arrest in children differs from adults in that it is most commonly:

Pulmonary embolism
Primary cardiac arrhythmia (VF/pVT)
Respiratory failure or shock leading to hypoxic cardiac arrest (Correct answer)
Traumatic cardiac arrest

Correct answer: Respiratory failure or shock leading to hypoxic cardiac arrest

Unlike adults where VF/pVT is common, paediatric cardiac arrest is predominantly caused by respiratory failure or shock progressing to hypoxia, making airway management and early oxygenation the most critical interventions.

Question 67: Adequate pre-oxygenation before RSI aims to achieve a SpO2 of:

Pre-oxygenation is not required in emergency airway management
70% is acceptable in emergency RSI
90% is sufficient
100% (or as close as possible) on high-flow oxygen for at least 3 minutes to maximise oxygen reserve (Correct answer)

Correct answer: 100% (or as close as possible) on high-flow oxygen for at least 3 minutes to maximise oxygen reserve

Pre-oxygenation denitrogenates the functional residual capacity, extending the apnoea time (safe apnoea period) before desaturation; achieving SpO2 100% maximises the oxygen reserve available during the intubation attempt.

Question 68: During pre-hospital paediatric intubation, the appropriate blade size for a 5-year-old is:

Size 0 Miller blade
Size 1 Miller blade
Size 2 Macintosh or Miller blade (Correct answer)
Size 4 Macintosh blade

Correct answer: Size 2 Macintosh or Miller blade

A size 2 laryngoscope blade (Macintosh curved or Miller straight) is appropriate for school-age children (approximately 2-10 years); blade selection follows the child's size rather than exact age.

Question 69: Which ECG finding during cardiac arrest indicates a shockable rhythm?

Narrow-complex PEA
Asystole
Ventricular fibrillation (VF) or pulseless ventricular tachycardia (pVT) (Correct answer)
Sinus bradycardia with pulse

Correct answer: Ventricular fibrillation (VF) or pulseless ventricular tachycardia (pVT)

Only VF and pVT are shockable rhythms in cardiac arrest; asystole and PEA are non-shockable and treated with CPR plus epinephrine. Rhythms with pulses are not cardiac arrest rhythms.

Question 70: What is the indication and dosing of aspirin in DCAS chest pain protocols?

300mg chewed for suspected acute coronary syndrome to inhibit platelet aggregation (Correct answer)
100mg swallowed for general pain
300mg for headache only
500mg intravenously for cardiac arrest

Correct answer: 300mg chewed for suspected acute coronary syndrome to inhibit platelet aggregation

Aspirin 300mg chewed (for rapid absorption) is administered for suspected ACS to inhibit platelet aggregation and reduce thrombus formation, unless the patient is allergic or actively bleeding.

Question 71: Magnesium sulphate 1-2g IV is used in ACLS for:

Atrial fibrillation with rapid rate
Sinus tachycardia
Standard ventricular fibrillation
Torsades de pointes (polymorphic VT with prolonged QT interval) (Correct answer)

Correct answer: Torsades de pointes (polymorphic VT with prolonged QT interval)

Torsades de pointes is a specific form of polymorphic VT associated with long QT syndrome; magnesium sulphate (1-2g IV) is the treatment of choice, shortening the QT interval and suppressing the arrhythmia.

Question 72: What is the DCAS protocol for managing stroke patients using the FAST assessment?

Wait for symptoms to resolve
Face drooping, Arm weakness, Speech difficulty, Time to call emergency services — rapid identification and transport to stroke center (Correct answer)
Only provide aspirin
Perform brain surgery in the ambulance

Correct answer: Face drooping, Arm weakness, Speech difficulty, Time to call emergency services — rapid identification and transport to stroke center

DCAS uses the FAST assessment (Face, Arm, Speech, Time) for rapid stroke identification, followed by blood glucose check, noting symptom onset time, and rapid transport to a designated stroke center.

Question 73: How should DCAS paramedics manage acute asthma exacerbations?

Give oral antihistamines
Administer high-flow oxygen, nebulized salbutamol, ipratropium bromide, and consider IV hydrocortisone for severe attacks (Correct answer)
Only provide a paper bag to breathe into
Withhold all medications until hospital

Correct answer: Administer high-flow oxygen, nebulized salbutamol, ipratropium bromide, and consider IV hydrocortisone for severe attacks

Acute asthma management includes high-flow oxygen, nebulized salbutamol (beta-2 agonist), ipratropium bromide (anticholinergic), and IV/oral corticosteroids for severe exacerbations to reduce airway inflammation.

Question 74: Intubation in the setting of cardiac arrest differs from RSI because:

Succinylcholine must still be used
The dose of induction agent is doubled
No induction or paralytic agents are required — the patient is unconscious and apnoeic (Correct answer)
Video laryngoscopy is contraindicated in cardiac arrest

Correct answer: No induction or paralytic agents are required — the patient is unconscious and apnoeic

In cardiac arrest, the patient is unconscious and has no muscle tone; drugs are not required for intubation and their administration wastes time — the paralytic and induction agent requirement of RSI does not apply.

Question 75: The Dubai Health Authority (DHA) role in relation to DCAS includes:

Regulatory oversight of healthcare standards, licensing of healthcare professionals, and hospital network coordination (Correct answer)
Direct operational command of DCAS ambulance crews
Providing medical supplies to DCAS exclusively
Training DCAS paramedics independently without DCAS involvement

Correct answer: Regulatory oversight of healthcare standards, licensing of healthcare professionals, and hospital network coordination

DHA regulates healthcare quality and standards across Dubai (including DCAS), licenses healthcare professionals, and coordinates the hospital network — while DCAS maintains operational independence for ambulance services.

Question 76: When transferring patient care to the emergency department, a structured handover using 'SBAR' provides:

Scene safety, Breathing assessment, Airway management, Rapid transport details
Situation, Background, Assessment, Recommendation — a structured clinical communication tool (Correct answer)
Scene description, Basic vital signs, Ambulance details, Return time
Suspected diagnosis, Body systems review, Allergies, Resuscitation status

Correct answer: Situation, Background, Assessment, Recommendation — a structured clinical communication tool

SBAR provides a structured handover framework ensuring critical clinical information — current situation, relevant background, paramedic assessment, and recommended actions — is communicated clearly and efficiently to the receiving team.

Question 77: What is the mechanism of action of salbutamol (Ventolin) used by DCAS paramedics?

It thins mucus secretions
It reduces inflammation
It relaxes bronchial smooth muscle through beta-2 adrenergic receptor stimulation, causing bronchodilation (Correct answer)
It suppresses the immune response

Correct answer: It relaxes bronchial smooth muscle through beta-2 adrenergic receptor stimulation, causing bronchodilation

Salbutamol is a selective beta-2 adrenergic agonist that relaxes bronchial smooth muscle, producing bronchodilation and relieving bronchoconstriction in conditions like asthma and COPD.

Question 78: Hypoglycaemia in a neonate is defined as blood glucose below:

2.6 mmol/L (47 mg/dL) (Correct answer)
1.0 mmol/L
4.0 mmol/L
3.5 mmol/L

Correct answer: 2.6 mmol/L (47 mg/dL)

Neonatal hypoglycaemia is defined at a lower threshold than older children/adults: <2.6 mmol/L (47 mg/dL) requires treatment to prevent neurological injury; symptomatic neonates are treated at even higher values.

Question 79: Cardioversion for unstable tachyarrhythmia is performed 'synchronised' meaning:

The shock is delivered at random timing
Energy is matched to the patient's body weight
Two defibrillators are used simultaneously
The shock is delivered on the R wave to avoid inducing VF (Correct answer)

Correct answer: The shock is delivered on the R wave to avoid inducing VF

Synchronised cardioversion delivers the shock on the QRS complex (R wave), avoiding delivery during the vulnerable T wave repolarisation period which could induce ventricular fibrillation.

Question 80: When assessing spinal cord injury in the field, which finding suggests a complete spinal cord injury at the cervical level?

Tetraplegia with loss of sensation in all four limbs (Correct answer)
Loss of sensation below the umbilicus only
Paraplegia with preserved upper limb function
Isolated loss of bladder control

Correct answer: Tetraplegia with loss of sensation in all four limbs

Tetraplegia (all four limbs affected) with sensory loss is consistent with a complete cervical spinal cord injury, as the cervical cord controls upper and lower limb function.

Question 81: Pre-hospital documentation in Dubai must include:

Only the patient's name and diagnosis
Patient demographics, chief complaint, vital signs, interventions, medications given, and receiving hospital (Correct answer)
Financial information and insurance details
Medications administered only

Correct answer: Patient demographics, chief complaint, vital signs, interventions, medications given, and receiving hospital

Comprehensive pre-hospital patient care reports (PCR) must document all clinical information — demographics, history, assessment findings, vital sign trends, interventions, and medications — to ensure continuity of care and medico-legal compliance.

Question 82: The pharmacological difference between succinylcholine and rocuronium as neuromuscular blocking agents is:

Succinylcholine lasts longer and is preferred for prolonged paralysis
They are pharmacologically identical
Rocuronium cannot be used in RSI
Succinylcholine is depolarising (short-acting, cannot be reversed); rocuronium is non-depolarising (longer-acting, reversible with sugammadex) (Correct answer)

Correct answer: Succinylcholine is depolarising (short-acting, cannot be reversed); rocuronium is non-depolarising (longer-acting, reversible with sugammadex)

Succinylcholine mimics acetylcholine causing sustained depolarisation (fasciculations, then paralysis) — ultra-short acting (8-10 min) but irreversible. Rocuronium competitively blocks nicotinic receptors — longer acting but reversible with sugammadex.

Question 83: Under Dubai EMS protocols, a patient who refuses transport to hospital must:

Be assessed for decision-making capacity; a competent adult may refuse, requiring documentation and a signed refusal form (Correct answer)
Be reported to Dubai Police for non-compliance
Be transported regardless of their wishes
Be sedated to facilitate transport

Correct answer: Be assessed for decision-making capacity; a competent adult may refuse, requiring documentation and a signed refusal form

Competent adults have the right to refuse treatment and transport; paramedics must assess capacity, explain risks, obtain informed refusal (signed documentation), and advise the patient to call again if their condition changes.

Question 84: What professional standards and code of conduct govern DCAS paramedics?

DCAS paramedics must adhere to clinical competency standards, ethical guidelines, continuing education requirements, and UAE healthcare professional regulations (Correct answer)
Standards only apply to physicians
There are no professional standards
Only technical skills are assessed

Correct answer: DCAS paramedics must adhere to clinical competency standards, ethical guidelines, continuing education requirements, and UAE healthcare professional regulations

DCAS paramedics are governed by professional standards covering clinical competency, ethical conduct, continuing professional development, and compliance with UAE healthcare licensing requirements through DHA.

Question 85: Dubai's integrated emergency response system uses which unified emergency number?

998 (Dubai Ambulance / DCAS) (Correct answer)
112 for all emergencies
999 (Police) and 997 (Civil Defence) but 998 for ambulance
999 for all emergency services uniformly

Correct answer: 998 (Dubai Ambulance / DCAS)

998 is Dubai's dedicated ambulance emergency number operated by DCAS; 999 is for police, 997 for civil defence/fire — though 112 (international standard) also routes calls to appropriate services.

Question 86: How should DCAS paramedics manage a patient with suspected sepsis?

Wait for lab results before treatment
Use the Sepsis Six approach: give high-flow oxygen, take blood cultures, give IV antibiotics and fluids, measure lactate, and monitor urine output (Correct answer)
Only take temperature
Only provide oral antibiotics

Correct answer: Use the Sepsis Six approach: give high-flow oxygen, take blood cultures, give IV antibiotics and fluids, measure lactate, and monitor urine output

Pre-hospital sepsis management focuses on early recognition using screening tools, high-flow oxygen, IV fluid resuscitation, monitoring vital signs, and alerting the receiving hospital for early antibiotic administration.

Question 87: A patient suddenly loses consciousness, recovers spontaneously within 1-2 minutes, and reports no confusion afterward. Which condition is most likely?

Haemorrhagic stroke
Generalised tonic-clonic seizure
Vasovagal syncope (Correct answer)
Hypoglycaemic episode

Correct answer: Vasovagal syncope

Vasovagal syncope typically presents as a brief, self-resolving loss of consciousness with rapid full recovery and no postictal confusion, distinguishing it from seizure.

Question 88: Which of the following is a sign of right main bronchus intubation?

SpO2 rise to 100% immediately after intubation
High ETCO2 reading
Absent or reduced breath sounds over the left lung field with unilateral (right) chest rise (Correct answer)
Bilateral equal breath sounds

Correct answer: Absent or reduced breath sounds over the left lung field with unilateral (right) chest rise

Right main bronchus intubation occurs because the right bronchus is more vertical; the ETT selectively ventilates the right lung, causing absent left breath sounds, unilateral chest rise, and progressive left lung atelectasis with hypoxia.

Question 89: Intussusception in an infant classically presents with:

Episodic colicky pain, drawing up of legs, vomiting, and 'redcurrant jelly' stool (Correct answer)
High fever and jaundice
Continuous abdominal pain and diarrhoea
Abdominal distension without pain

Correct answer: Episodic colicky pain, drawing up of legs, vomiting, and 'redcurrant jelly' stool

Intussusception (bowel telescoping) causes intermittent colicky pain (infant draws up legs and cries, then is quiet between episodes), vomiting, and the classic 'redcurrant jelly' stool representing bloody mucus.

Question 90: The 'mechanism of injury' assessment helps paramedics predict:

Drug ingestion history
Likely injury patterns and guide physical examination priorities (Correct answer)
Exact GCS score before assessment
Exact diagnoses without physical examination

Correct answer: Likely injury patterns and guide physical examination priorities

Understanding the mechanism (e.g., high-speed MVA with ejection, fall from height, stab wound) allows paramedics to predict likely injury patterns and ensure systematic examination does not miss occult injuries.

Question 91: The 'two-handed jaw-thrust' BVM technique refers to:

Two rescuers each operating a BVM simultaneously
One rescuer uses both hands on the mask while a second rescuer squeezes the bag — the most effective BVM ventilation technique (Correct answer)
A single rescuer using two BVMs alternately
Using both hands to insert the OPA before BVM

Correct answer: One rescuer uses both hands on the mask while a second rescuer squeezes the bag — the most effective BVM ventilation technique

The two-person BVM technique (two hands on the mask for seal plus jaw thrust, second person squeezing the bag) is significantly more effective than one-person technique and generates better tidal volumes and mask seal.

Question 92: The abdominal trauma assessment tool used in hospitals (FAST exam) evaluates:

Focused Assessment with Sonography in Trauma — looking for free fluid in pericardium, Morrison's pouch, splenorenal space, and pelvis (Correct answer)
Full Abdominal Screening Test
Functional Assessment of Surgical Trauma
Field Assessment and Stabilisation Tool

Correct answer: Focused Assessment with Sonography in Trauma — looking for free fluid in pericardium, Morrison's pouch, splenorenal space, and pelvis

FAST uses bedside ultrasound to detect haemoperitoneum and haemopericardium, identifying free fluid (blood) in four standard views — pericardial, hepatorenal, splenorenal, and pelvic — guiding urgent surgical intervention.

Question 93: The 'sniffing position' for intubation aligns:

The patient's chin to the ceiling
The ETT with the right main bronchus
The oral, pharyngeal, and laryngeal axes to provide the best laryngoscopic view (Correct answer)
The trachea parallel to the floor

Correct answer: The oral, pharyngeal, and laryngeal axes to provide the best laryngoscopic view

The sniffing position (neck flexed, head extended) aligns the oral-pharyngeal-laryngeal axis, improving the laryngoscopic view of the glottis; a folded towel under the occiput achieves this in most adults.

Question 94: Rocuronium used for RSI requires reversal with which agent if intubation fails?

Atropine
No reversal is possible — use surgical airway immediately
Neostigmine only
Sugammadex — cyclodextrin molecule that encapsulates and inactivates rocuronium (Correct answer)

Correct answer: Sugammadex — cyclodextrin molecule that encapsulates and inactivates rocuronium

Sugammadex (16mg/kg) can rapidly reverse even deep rocuronium-induced neuromuscular blockade within minutes, providing a critical safety option in CICO scenarios when using rocuronium for RSI instead of succinylcholine.

Question 95: How should DCAS paramedics manage heat-related emergencies common in Dubai's climate?

Only provide shade
Only give cold water to drink
Assess severity (heat exhaustion vs heat stroke), rapidly cool with ice packs to groin/axillae/neck, IV fluids, and monitor core temperature (Correct answer)
Wait for the patient to cool naturally

Correct answer: Assess severity (heat exhaustion vs heat stroke), rapidly cool with ice packs to groin/axillae/neck, IV fluids, and monitor core temperature

Dubai's extreme heat makes heat emergencies common. Management includes distinguishing severity, rapid active cooling (ice packs to major vessel areas), IV fluid resuscitation, and continuous temperature monitoring.

Question 96: The capacity surge response for Dubai hospitals during a major incident involves:

Closing the hospital to new admissions immediately
Transferring all patients to military hospitals
Activating hospital major incident plans (MAJAX), discharging non-critical patients, cancelling elective procedures, and calling in additional staff (Correct answer)
Only activating additional A&E beds

Correct answer: Activating hospital major incident plans (MAJAX), discharging non-critical patients, cancelling elective procedures, and calling in additional staff

Hospital MAJAX plans systematically increase capacity through multiple measures: early discharge of stable patients, cancellation of elective lists freeing theatres and staff, activation of off-duty personnel, and creation of additional treatment spaces.

Question 97: The 'Code Team Leader' in ACLS is responsible for:

Directing resuscitation, making treatment decisions, delegating tasks, and calling for termination (Correct answer)
Performing all interventions personally
Documenting all events in the patient care record
Maintaining compressions throughout the resuscitation

Correct answer: Directing resuscitation, making treatment decisions, delegating tasks, and calling for termination

The team leader directs the resuscitation without performing compressions (to maintain situational awareness), assigns roles, makes treatment decisions, integrates information, and determines when to terminate efforts.

Question 98: The Parkland formula for burn fluid resuscitation is:

2ml × weight (kg) × %TBSA
1 litre per 10% TBSA burned
4ml × weight (kg) × %TBSA burned, of Lactated Ringer's, with half given in first 8 hours (Correct answer)
Normal saline 250ml/hour regardless of burn size

Correct answer: 4ml × weight (kg) × %TBSA burned, of Lactated Ringer's, with half given in first 8 hours

The Parkland formula calculates the 24-hour fluid requirement for major burns; half is given in the first 8 hours (timed from the injury, not hospital arrival) and half over the subsequent 16 hours.

Question 99: The Glasgow Coma Scale (GCS) assesses which three parameters?

Eye opening, verbal response, and motor response (Correct answer)
Airway patency, breathing effort, and circulation adequacy
Pupil size, reflexes, and consciousness level
Pulse rate, respiratory rate, and blood pressure

Correct answer: Eye opening, verbal response, and motor response

The GCS scores eye opening (1-4), best verbal response (1-5), and best motor response (1-6), giving a total of 3-15; scores help quantify neurological function and guide management decisions.

Question 100: What is the STEMI protocol for DCAS paramedics?

Transport to nearest hospital regardless of capability
Obtain 12-lead ECG, identify ST-elevation, administer aspirin, notify receiving cardiac catheterization center for direct transfer (Correct answer)
Only administer oxygen
Wait for hospital diagnosis

Correct answer: Obtain 12-lead ECG, identify ST-elevation, administer aspirin, notify receiving cardiac catheterization center for direct transfer

DCAS STEMI protocol requires early 12-lead ECG acquisition, identification of ST-elevation, aspirin administration, and direct notification/transport to a PCI-capable hospital to minimize door-to-balloon time.

Question 101: The ACLS guideline recommendation for CPR compression rate is:

130-150 compressions per minute
As fast as possible without rate limit
80-100 compressions per minute
100-120 compressions per minute (Correct answer)

Correct answer: 100-120 compressions per minute

Compression rates of 100-120/min optimise cardiac output during CPR; rates above 120/min reduce compression depth and below 100/min reduce perfusion — both extremes worsen outcomes.

Question 102: Tranexamic acid (TXA) works in traumatic haemorrhage by:

Replacing lost clotting factors directly
Inhibiting fibrinolysis (clot breakdown) by blocking plasminogen activation — preserving formed clots (Correct answer)
Causing platelet aggregation
Stimulating clot formation through thrombin activation

Correct answer: Inhibiting fibrinolysis (clot breakdown) by blocking plasminogen activation — preserving formed clots

TXA is an antifibrinolytic that blocks plasminogen conversion to plasmin, preventing breakdown of formed clots in injured vessels; it is most effective when given within 3 hours of injury (CRASH-2 trial evidence).

Question 103: Confirmation of correct endotracheal tube placement requires:

Chest rise alone
Waveform capnography plus clinical confirmation (chest rise, auscultation, mist in tube) (Correct answer)
Auscultation alone
A single breath CO2 detector only

Correct answer: Waveform capnography plus clinical confirmation (chest rise, auscultation, mist in tube)

Gold standard confirmation requires waveform capnography (most reliable) combined with clinical signs; auscultation alone is insufficient as gastric tube placement can mimic breath sounds, especially in noisy environments.

Question 104: In ACLS, pulseless electrical activity (PEA) is managed by:

CPR, epinephrine every 3-5 minutes, and treatment of reversible causes (Hs and Ts) (Correct answer)
Immediate defibrillation
Calcium gluconate IV as first-line
Atropine 1mg IV

Correct answer: CPR, epinephrine every 3-5 minutes, and treatment of reversible causes (Hs and Ts)

PEA is treated with high-quality CPR and epinephrine while simultaneously searching for and treating reversible causes (Hypovolaemia, Hypoxia, Hydrogen ion (acidosis), Hypo/hyperkalaemia, Hypothermia, Tension pneumothorax, Tamponade, Toxins, Thrombosis).

Question 105: The maximum dose of lignocaine (lidocaine) for local infiltration anaesthesia (without epinephrine) is:

10mg/kg
0.5mg/kg
3mg/kg (maximum 200mg) (Correct answer)
Fixed dose 500mg regardless of weight

Correct answer: 3mg/kg (maximum 200mg)

Lignocaine without adrenaline has a maximum dose of 3mg/kg (up to 200mg); with adrenaline (vasoconstriction slowing absorption), the maximum is 7mg/kg — exceeding these limits risks local anaesthetic systemic toxicity (LAST).

Question 106: In PALS, adenosine dosing for SVT is:

0.1mg/kg rapid IV push (maximum 6mg first dose) followed by a rapid saline flush (Correct answer)
0.5mg/kg IV infusion over 10 minutes
0.01mg/kg IM injection
1mg fixed dose for all paediatric patients

Correct answer: 0.1mg/kg rapid IV push (maximum 6mg first dose) followed by a rapid saline flush

Paediatric adenosine: 0.1mg/kg (max 6mg) rapid IV push as close to the heart as possible, followed immediately by a rapid saline flush to deliver the drug before its short half-life allows breakdown.

Question 107: Fentanyl given before laryngoscopy in RSI (as a 'blunting agent') is intended to:

Act as the primary analgesic for post-intubation pain
Reduce the dose of succinylcholine needed
Replace the induction agent
Attenuate the hypertensive and tachycardic response to laryngoscopy, particularly in TBI patients (Correct answer)

Correct answer: Attenuate the hypertensive and tachycardic response to laryngoscopy, particularly in TBI patients

Laryngoscopy causes a powerful sympathetic response (hypertension, tachycardia); in TBI patients, this raises ICP; fentanyl 1-3 mcg/kg given 3 minutes before laryngoscopy blunts this response to protect ICP.

Question 108: Traumatic asphyxia presents with:

Petechial haemorrhages to face and neck, cyanosis, conjunctival haemorrhages after severe chest compression (Correct answer)
Subcutaneous emphysema and tracheal deviation
Blunt cardiac injury with arrhythmia
Bilateral haemothorax

Correct answer: Petechial haemorrhages to face and neck, cyanosis, conjunctival haemorrhages after severe chest compression

Traumatic asphyxia results from a sudden massive increase in intrathoracic pressure (e.g., crush injury) forcing blood retrograde through the valveless veins of the head and neck, causing petechiae, cyanosis, and subconjunctival haemorrhages.

Question 109: The correct position for hands during adult chest compressions is:

Lower half of the sternum, heel of hand, with second hand overlapping (Correct answer)
Upper sternum near the clavicles
Left of the sternum over the cardiac apex
Xiphisternum (xiphoid process)

Correct answer: Lower half of the sternum, heel of hand, with second hand overlapping

Compressions must be applied to the lower half of the sternum using the heel of the dominant hand with the second hand overlapping, directly compressing the heart between sternum and spine.

Question 110: Atropine is indicated in which cardiac emergency?

Symptomatic sinus bradycardia or first/second-degree (Mobitz I) AV block (Correct answer)
Supraventricular tachycardia
Complete (third-degree) AV block in infranodal location
Ventricular fibrillation

Correct answer: Symptomatic sinus bradycardia or first/second-degree (Mobitz I) AV block

Atropine blocks vagal tone to increase heart rate — effective for sinus bradycardia and nodal blocks; it is not effective for infranodal complete AV block and is not indicated in VF/pVT.

Question 111: What is the first shockable rhythm a DCAS paramedic should identify on a cardiac monitor?

Pulseless electrical activity (PEA)
Normal sinus rhythm
Asystole
Ventricular fibrillation (VF) (Correct answer)

Correct answer: Ventricular fibrillation (VF)

Ventricular fibrillation (VF) is a chaotic, disorganized cardiac rhythm that is shockable. Identifying VF quickly allows paramedics to deliver defibrillation, which is the primary treatment.

Question 112: Inhalation injury is suspected in a burn patient when:

There are facial burns, singed eyebrows/nasal hair, carbonaceous (sooty) sputum, and hoarse voice (Correct answer)
Burns are full-thickness only
Burns cover more than 30% TBSA only
The patient has hypotension

Correct answer: There are facial burns, singed eyebrows/nasal hair, carbonaceous (sooty) sputum, and hoarse voice

Clinical indicators of inhalation injury include facial burns, singed nasal/facial hair (indicating exposure to flame), carbonaceous sputum (soot in the airway), and hoarseness (glottic oedema) — the last indicating imminent airway compromise.

Question 113: Nitroglycerin (GTN) is contraindicated in chest pain patients taking:

Beta-blockers
Aspirin
Statins
Phosphodiesterase-5 inhibitors (sildenafil/Viagra, tadalafil) within the past 24-48 hours (Correct answer)

Correct answer: Phosphodiesterase-5 inhibitors (sildenafil/Viagra, tadalafil) within the past 24-48 hours

Both nitrates and PDE-5 inhibitors cause vasodilatation via cGMP pathways; combination produces profound, potentially fatal hypotension — GTN is absolutely contraindicated within 24 hours of sildenafil and 48 hours of tadalafil.

Question 114: Near-drowning (submersion injury) pre-hospital management priorities are:

Immediate transport without any field interventions
Administration of diuretics to remove water from the lungs
Removal from water, airway opening, ventilation, CPR if pulseless, warm core temperature (Correct answer)
Chest compressions before airway management

Correct answer: Removal from water, airway opening, ventilation, CPR if pulseless, warm core temperature

Near-drowning management: safely rescue from water, establish airway and provide rescue breathing, begin CPR if in cardiac arrest, prevent/treat hypothermia, and transport to hospital — all standard ALS priorities.

Question 115: In a penetrating abdominal trauma with evisceration, pre-hospital management includes:

Covering eviscerated organs with moist dressing without attempting to replace them, and rapid transport (Correct answer)
Applying firm circumferential bandaging directly over the organs
Pushing organs back into the abdominal cavity and covering with a dry dressing
Cutting the eviscerated bowel and sending the patient to surgery

Correct answer: Covering eviscerated organs with moist dressing without attempting to replace them, and rapid transport

Eviscerated organs should be covered with a moist sterile dressing to prevent desiccation, not pushed back (risk of contamination and injury), and the patient transported urgently to surgery.

Question 116: What is the DCAS response time target for Category 1 (life-threatening) emergencies?

30 minutes
Within 1 hour
No specific targets exist
Within 8-12 minutes for life-threatening emergencies in urban Dubai (Correct answer)

Correct answer: Within 8-12 minutes for life-threatening emergencies in urban Dubai

DCAS aims for rapid response times for life-threatening emergencies, targeting arrival within 8-12 minutes in urban areas, in line with international ambulance service benchmarks.

Question 117: Which position is appropriate for a responsive patient in shock with no suspected spinal injury?

Full Trendelenburg (steep head-down tilt)
Sitting upright at 90 degrees
Supine with legs elevated 10-15 degrees (modified Trendelenburg) (Correct answer)
Recovery position (lateral)

Correct answer: Supine with legs elevated 10-15 degrees (modified Trendelenburg)

Modest leg elevation in a supine patient increases venous return from the lower limbs to the central circulation, supporting blood pressure in hypovolaemic shock without the respiratory compromise of steep Trendelenburg.

Question 118: What is the recommended energy level for the first defibrillation shock in adult cardiac arrest using a biphasic defibrillator?

400 joules
120-200 joules depending on manufacturer (Correct answer)
50 joules
20 joules

Correct answer: 120-200 joules depending on manufacturer

DCAS protocols align with international guidelines recommending initial biphasic defibrillation at the manufacturer's recommended dose, typically 120-200 joules for the first shock.

Question 119: How should DCAS paramedics assess pain using the numeric rating scale?

Using a 1-3 scale
Asking the patient to rate their pain from 0 (no pain) to 10 (worst pain imaginable) (Correct answer)
Measuring pain with electronic devices only
Using only visual observation

Correct answer: Asking the patient to rate their pain from 0 (no pain) to 10 (worst pain imaginable)

The numeric rating scale asks patients to rate their pain intensity from 0 (no pain) to 10 (worst pain imaginable), providing a standardized subjective pain measurement for documentation and treatment decisions.

Question 120: Which type of stroke is caused by a ruptured blood vessel in the brain?

Haemorrhagic stroke (Correct answer)
Ischaemic stroke
Thrombotic stroke
Embolic stroke

Correct answer: Haemorrhagic stroke

A haemorrhagic stroke results from rupture of a cerebral blood vessel, causing bleeding into or around the brain tissue.

Dubai Corporation for Ambulance Services (DCAS) Exam

The DCAS exam certifies paramedics and emergency medical technicians for the Dubai Corporation for Ambulance Services, covering pre-hospital care, cardiac emergencies, trauma, pharmacology, and Dubai EMS protocols.

120

Questions

150 min

Time Limit

75%

To Pass

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