Certified ECMO Specialist (CES) Exam — Questions and Answers

Question 1: What is the primary function of the oxygenator in an ECMO circuit?

Monitor venous pressure.
Add oxygen & remove carbon dioxide. (Correct answer)
Pump blood through the cannulas.
Filter blood impurities.

Correct answer: Add oxygen & remove carbon dioxide.

The oxygenator acts as the artificial lung within the ECMO circuit. Its primary function is to facilitate gas exchange by adding oxygen to the patient's blood and simultaneously removing carbon dioxide. This process is vital for supporting patients with severe respiratory or cardiac failure when their native lungs cannot perform this function adequately.

Question 2: ECMO simulation training is most valuable for team performance because it:

Allows teams to practice rare but high-stakes scenarios without patient risk (Correct answer)
Replaces direct bedside ECMO experience
Eliminates the need for ELSO guidelines review
Reduces the need for ECMO credentialing

Correct answer: Allows teams to practice rare but high-stakes scenarios without patient risk

Simulation allows ECMO teams to rehearse rare emergencies (circuit rupture, air embolism, power failure) safely, building teamwork and response automaticity.

Question 3: Which laboratory finding most strongly suggests a patient is not a good ECMO candidate due to pre-existing organ dysfunction?

Pre-existing liver cirrhosis with INR > 3.0 (Correct answer)
Elevated lactate of 4 mmol/L
Mild thrombocytopenia of 100 × 10³/μL
Serum creatinine of 1.4 mg/dL

Correct answer: Pre-existing liver cirrhosis with INR > 3.0

Pre-existing liver cirrhosis with significant coagulopathy indicates end-stage hepatic failure, increasing ECMO mortality and bleeding risk substantially.

Question 4: What is the function of a 'bladder box' or venous reservoir in some ECMO systems?

To add anticoagulant directly to the circuit
To act as a collapsible reservoir that triggers automatic pump speed reduction when venous return is insufficient, preventing inlet suction (Correct answer)
To heat blood before it enters the oxygenator
To store excess priming solution

Correct answer: To act as a collapsible reservoir that triggers automatic pump speed reduction when venous return is insufficient, preventing inlet suction

A bladder box or venous reservoir collapses when inlet flow is insufficient, triggering automatic pump speed reduction to prevent excessive negative pressure and suction injury.

Question 5: What is the purpose of a 'pigtail' sampling port on an ECMO circuit?

To measure circuit recirculation fraction directly
To allow blood sampling for laboratory analysis without opening the circuit or interrupting flow (Correct answer)
To administer vasoactive medications directly into the circuit
To connect the circuit to the water heater-cooler

Correct answer: To allow blood sampling for laboratory analysis without opening the circuit or interrupting flow

Pigtail sampling ports allow blood to be drawn for ABG and laboratory testing without opening the circuit, maintaining sterility and preventing air entry.

Question 6: Which parameter indicates successful weaning from neonatal VV ECMO in a term infant?

Normal chest X-ray appearance
PaO2 > 60 mmHg on FiO2 0.4 with sweep gas off (Correct answer)
Heart rate < 120 bpm
Absence of supplemental oxygen requirement

Correct answer: PaO2 > 60 mmHg on FiO2 0.4 with sweep gas off

Maintaining PaO2 > 60 mmHg on FiO2 ≤ 0.4 with sweep gas turned off demonstrates sufficient native lung recovery in neonates.

Question 7: Why is regular monitoring of ACT or aPTT important during ECMO?

To evaluate anticoagulation levels. (Correct answer)
To assess liver function.
To determine electrolyte balance.
To regulate oxygen flow.

Correct answer: To evaluate anticoagulation levels.

ECMO circuits are highly thrombogenic, meaning they promote clot formation, which can lead to circuit failure or embolization to the patient. Therefore, continuous anticoagulation, typically with heparin, is essential to prevent these clots. Regular monitoring of ACT (Activated Clotting Time) or aPTT (activated Partial Thromboplastin Time) ensures that anticoagulation levels are maintained within a therapeutic range, balancing the risk of bleeding against the risk of clotting.

Question 8: An awake ECMO strategy (ECMO without intubation) is primarily used to achieve what goal?

Avoid ventilator-induced lung injury and preserve respiratory muscle function (Correct answer)
Allow patients to ambulate during ECMO for bridge to heart transplant only
Decrease circuit priming volume
Reduce anticoagulation requirements

Correct answer: Avoid ventilator-induced lung injury and preserve respiratory muscle function

Awake ECMO avoids ventilator-induced lung injury and preserves diaphragmatic function, improving rehabilitation potential.

Question 9: Persistent pulmonary hypertension of the newborn (PPHN) refractory to iNO is an indication for which ECMO modality?

Either VV or VA ECMO depending on cardiac function
VA ECMO exclusively in all cases
ECMO is contraindicated in neonates with PPHN
VV ECMO if cardiac function is preserved (Correct answer)

Correct answer: VV ECMO if cardiac function is preserved

VV ECMO is preferred for PPHN when cardiac function is preserved, reserving VA ECMO for cases with concurrent cardiac failure.

Question 10: Which ECMO circuit component is most prone to air entrapment and requires careful de-airing during priming?

The temperature probe housing
The oxygenator housing and hollow fiber bundle (Correct answer)
The pump head magnets
Tubing clamps

Correct answer: The oxygenator housing and hollow fiber bundle

The hollow-fiber oxygenator housing is the component most prone to air entrapment during circuit priming and requires meticulous de-airing maneuvers.

Question 11: Oxygen delivery (DO2) in an ECMO patient is calculated using which of the following components?

ECMO flow rate multiplied by sweep gas FiO2
Cardiac output multiplied by arterial oxygen content (CaO2) (Correct answer)
Post-oxygenator PO2 multiplied by blood flow rate
Pump speed (RPM) multiplied by hemoglobin concentration

Correct answer: Cardiac output multiplied by arterial oxygen content (CaO2)

DO2 = Cardiac output (native + ECMO) × CaO2; CaO2 includes hemoglobin-bound and dissolved oxygen.

Question 12: The ECMO specialist's primary role includes all of the following EXCEPT:

Monitoring circuit pressures and flow
Managing anticoagulation in collaboration with the physician
Adjusting ventilator settings independently without physician order (Correct answer)
Troubleshooting alarms and circuit issues

Correct answer: Adjusting ventilator settings independently without physician order

Ventilator management requires physician orders; ECMO specialists manage circuit function but do not independently adjust ventilator settings.

Question 13: Why is having a backup oxygenator critical in ECMO emergencies?

To reduce anticoagulation
To test circuit pressure
To replace failed gas exchange unit (Correct answer)
To improve flow rate

Correct answer: To replace failed gas exchange unit

The oxygenator is the primary component of the ECMO circuit responsible for gas exchange, essentially acting as the patient's lungs. If the oxygenator fails due to a clot, leak, or membrane fatigue, gas exchange ceases, which is life-threatening. Having a backup oxygenator readily available allows for rapid replacement, ensuring continuous life support and preventing patient hypoxia or hypercapnia.

Question 14: Oxygenator thrombosis is first suspected when:

Transmembrane pressure gradient across the oxygenator acutely rises (Correct answer)
Circuit flow spontaneously increases
Blood pressure suddenly drops
Venous limb oxygen saturation falls below 60%

Correct answer: Transmembrane pressure gradient across the oxygenator acutely rises

A rising transmembrane pressure gradient (pre- vs. post-oxygenator pressure difference) indicates increasing resistance from thrombus formation within the oxygenator.

Question 15: What should be done first when troubleshooting an ECMO pump alarm?

Check patient vitals immediately.
Identify the cause of the alarm. (Correct answer)
Restart the machine.
Silence the alarm and resume therapy.

Correct answer: Identify the cause of the alarm.

ECMO pump alarms signal a deviation from normal operation or a potential problem that could impact patient safety or circuit function. Silencing an alarm without understanding its root cause can lead to missed critical issues and potential harm. The immediate priority is always to investigate and identify the specific reason for the alarm to implement appropriate and timely corrective actions.

Question 16: Which complication can result from excessive anticoagulation during ECMO?

Stroke
Bradycardia
Hypertension
Bleeding (Correct answer)

Correct answer: Bleeding

While anticoagulation is essential to prevent clots in the ECMO circuit, excessive anticoagulation significantly increases the risk of bleeding. ECMO patients are already vulnerable to bleeding due to their critical illness, invasive procedures, and platelet dysfunction. Over-anticoagulation can lead to severe hemorrhage, which is a major cause of morbidity and mortality and requires careful management.

Question 17: Which indicator suggests a possible clot in the ECMO circuit?

Decreased oxygen saturation.
Increased delta pressure across the oxygenator. (Correct answer)
Stable blood gases.
Low pump RPMs.

Correct answer: Increased delta pressure across the oxygenator.

An increased delta pressure across the oxygenator signifies a higher resistance to blood flow through the device. This resistance is commonly caused by the formation of clots or fibrin deposition within the oxygenator's membrane. Monitoring this pressure difference is a critical indicator for detecting potential circuit thrombosis, which can impair gas exchange and overall ECMO effectiveness.

Question 18: A progressively decreasing pre-membrane to post-membrane PO2 gradient in the oxygenator over several days suggests:

Resolution of the patient's underlying respiratory disease
Improved native lung function reducing ECMO dependence
A decrease in ECMO flow requirements
Progressive membrane lung failure or clotting reducing gas transfer (Correct answer)

Correct answer: Progressive membrane lung failure or clotting reducing gas transfer

A falling transmembrane PO2 gradient indicates the oxygenator is becoming less efficient, often due to fibrin/thrombus deposition reducing the effective gas-exchange surface.

Question 19: The most common infectious complication in ECMO patients is:

Urinary tract infection
Ventilator-associated pneumonia (Correct answer)
ECMO circuit-related bloodstream infection
Candida bloodstream infection

Correct answer: Ventilator-associated pneumonia

Ventilator-associated pneumonia (VAP) remains the most frequent infection complication in ECMO patients due to prolonged mechanical ventilation requirements.

Question 20: Left ventricular distension during VA ECMO is caused by:

Low sweep gas flow reducing oxygenation
Right heart failure from elevated pulmonary pressures
Increased left ventricular afterload from retrograde aortic flow combined with poor LV ejection (Correct answer)
Excessive circuit blood flow returning to the right heart

Correct answer: Increased left ventricular afterload from retrograde aortic flow combined with poor LV ejection

Retrograde VA ECMO flow increases LV afterload; if the LV cannot eject against this pressure, the ventricle distends, worsening myocardial recovery.

Question 21: What is the most effective way to reduce recirculation in a bicaval dual-lumen VV ECMO cannula?

Reducing patient blood flow through the circuit
Adding a second venous drainage cannula
Increasing sweep gas flow
Repositioning the cannula so the return port faces the tricuspid valve (Correct answer)

Correct answer: Repositioning the cannula so the return port faces the tricuspid valve

Correct positioning of the dual-lumen cannula with the return port (Avalon/ProtekDuo) directed toward the tricuspid valve minimizes recirculation.

Question 22: In ECMO, carbon dioxide clearance is most directly controlled by adjusting:

Sweep gas flow rate (Correct answer)
ECMO blood flow rate (pump speed)
FDO2 (fraction of delivered oxygen in sweep gas)
Membrane oxygenator surface area alone

Correct answer: Sweep gas flow rate

CO2 removal is highly sensitive to sweep gas flow rate; increasing sweep gas increases the CO2 gradient across the membrane, enhancing clearance.

Question 23: Ethics consultation is most appropriate in ECMO cases when:

The patient requests a change in diet
The ECMO circuit requires a component change
Goals of care cannot be agreed upon by the family, patient, and clinical team (Correct answer)
The patient develops a line infection

Correct answer: Goals of care cannot be agreed upon by the family, patient, and clinical team

Ethics consultation is indicated when there is conflict or uncertainty about goals of care, end-of-life decisions, or withdrawal of ECMO support.

Question 24: Which ELSO guideline criterion for VA ECMO includes a cardiac index below what threshold?

< 1.8 L/min/m² (Correct answer)
< 2.5 L/min/m²
< 2.2 L/min/m²
< 1.2 L/min/m²

Correct answer: < 1.8 L/min/m²

ELSO guidelines suggest VA ECMO consideration when cardiac index falls below 1.8 L/min/m² despite maximal medical support.

Question 25: Which parameter is most important to assess before attempting VV ECMO weaning?

Normalization of serum lactate
Resolution of chest X-ray infiltrates
Improvement in native lung compliance and gas exchange on reduced ECMO support (Correct answer)
Absence of fever for 24 hours

Correct answer: Improvement in native lung compliance and gas exchange on reduced ECMO support

Improved native lung gas exchange and compliance on progressively reduced sweep gas and/or flow indicates readiness for VV ECMO weaning.

Question 26: Which intervention is used to vent the distended left ventricle during VA ECMO?

Intra-aortic balloon pump (IABP) or Impella device to offload the LV (Correct answer)
Adding a venous limb to convert to VAV ECMO
Decreasing vasopressor doses only
Increasing ECMO flow rate

Correct answer: Intra-aortic balloon pump (IABP) or Impella device to offload the LV

An IABP or Impella device provides mechanical left ventricular unloading, reducing wall stress and enabling myocardial recovery during VA ECMO.

Question 27: What is the primary purpose of anticoagulation during ECMO therapy?

To increase oxygen delivery
To stop clot formation (Correct answer)
To prevent infection
To reduce heart rate

Correct answer: To stop clot formation

The foreign surfaces of the ECMO circuit activate the coagulation cascade, making clot formation (thrombosis) a significant risk. Anticoagulation, typically with heparin, is administered to prevent these clots from forming within the circuit, which could lead to circuit failure, or from embolizing to the patient, causing severe complications like stroke or organ damage. This is crucial for circuit patency and patient safety.

Question 28: Why is it important to have a standardized emergency protocol in ECMO settings?

To manage daily workflow
To provide uniform emergency response (Correct answer)
To document patient allergies
To train new staff only

Correct answer: To provide uniform emergency response

Standardized emergency protocols ensure that all members of the ECMO team respond to critical situations in a consistent, coordinated, and efficient manner. This uniformity minimizes confusion, reduces errors, and optimizes patient outcomes during high-stress emergencies. It also facilitates effective communication and teamwork, which are crucial in complex ECMO management.

Question 29: Which hemodynamic parameter indicates the afterload the heart must overcome?

Mean arterial pressure
SVR (Correct answer)
Cardiac output
Central venous pressure

Correct answer: SVR

Systemic Vascular Resistance (SVR) represents the total resistance to blood flow in the systemic circulation, which the left ventricle must overcome to eject blood. It is a key determinant of afterload, the pressure the heart works against. Monitoring SVR helps assess the patient's hemodynamic status and guides the use of vasoactive medications to optimize blood pressure and organ perfusion.

Question 30: What is the best way to detect hemolysis in the ECMO circuit?

Listening to pump noises.
Monitoring oxygen saturation.
Observation of red-colored urine. (Correct answer)
Increasing sweep gas.

Correct answer: Observation of red-colored urine.

Hemolysis is the breakdown of red blood cells, releasing free hemoglobin into the bloodstream. When the kidneys filter this excess hemoglobin, it can cause the urine to appear red or dark brown, a condition known as hemoglobinuria. Observing red-colored urine is often the earliest and most direct clinical sign of significant hemolysis in an ECMO patient, indicating potential mechanical trauma to blood cells within the circuit.

Question 31: Following decannulation, how long is bed rest typically recommended after femoral venous ECMO cannula removal?

48 hours
1–2 hours
4–6 hours (Correct answer)
12–24 hours

Correct answer: 4–6 hours

Approximately 4–6 hours of bed rest after femoral venous decannulation is standard practice to ensure hemostasis and prevent hematoma formation.

Question 32: Harlequin syndrome (differential hypoxia) occurs in which ECMO configuration?

Central VA ECMO via the aorta
VV ECMO with dual-lumen cannula
VV ECMO with bi-caval dual-lumen cannula
Peripheral VA ECMO with femoral cannulation and recovering cardiac function (Correct answer)

Correct answer: Peripheral VA ECMO with femoral cannulation and recovering cardiac function

Harlequin syndrome occurs in peripheral VA ECMO when the recovering heart ejects deoxygenated blood into the aorta, competing with retrograde oxygenated ECMO flow.

Question 33: What is the target ACT range for most ECMO protocols using heparin?

250–300 seconds
180–220 seconds (Correct answer)
80–100 seconds
350–400 seconds

Correct answer: 180–220 seconds

The target Activated Clotting Time (ACT) range for most ECMO protocols using unfractionated heparin is typically between 180 and 220 seconds. This range aims to provide adequate anticoagulation to prevent circuit thrombosis while minimizing the risk of bleeding complications. Specific targets can vary slightly based on institutional protocols, patient factors, and the type of ECMO support.

Question 34: What does the term 'sweep gas' refer to in an ECMO oxygenator?

The priming fluid used to fill the circuit initially
The gas (oxygen/air blend) flowing through the oxygenator membrane to facilitate gas exchange (Correct answer)
The speed at which blood flows through the circuit
The rate at which the centrifugal pump spins

Correct answer: The gas (oxygen/air blend) flowing through the oxygenator membrane to facilitate gas exchange

Sweep gas is the gas flow (typically an O2/CO2 blend) through the hollow-fiber membrane oxygenator that drives CO2 removal and sets membrane-side gas composition.

Question 35: The SAVE score is used to predict survival in which ECMO population?

Neonates on VV ECMO
Pediatric patients on VV ECMO
Adults with ARDS on VV ECMO
Adults on VA ECMO for refractory cardiogenic shock (Correct answer)

Correct answer: Adults on VA ECMO for refractory cardiogenic shock

The SAVE (Survival After Veno-Arterial ECMO) score predicts survival in adults with refractory cardiogenic shock on VA ECMO.

Question 36: Which metric is most important for an ECMO program's quality improvement dashboard?

Survival to hospital discharge stratified by ECMO indication and patient population (Correct answer)
Average nurse-to-patient ratio across the ICU
Number of ECMO circuits used per year
Average length of stay for non-ECMO ICU patients

Correct answer: Survival to hospital discharge stratified by ECMO indication and patient population

Survival to hospital discharge by indication and patient group is the primary outcome metric for ECMO program quality benchmarking against ELSO registry data.

Question 37: When an ECMO patient is transferred to another facility, which document must accompany the patient?

Insurance pre-authorization only
Only the most recent ABG result
Complete ECMO circuit log, current parameter settings, and transport medication/anticoagulation plan (Correct answer)
Billing records

Correct answer: Complete ECMO circuit log, current parameter settings, and transport medication/anticoagulation plan

A complete ECMO circuit log, current settings documentation, and a transport anticoagulation/medication plan are essential for safe inter-facility ECMO transport.

Question 38: Limb ischemia distal to a femoral arterial ECMO cannula is best managed by:

Increasing heparin dosing only
Elevation of the affected limb
Immediate decannulation
Insertion of a distal perfusion cannula (DPC) in the superficial femoral artery (Correct answer)

Correct answer: Insertion of a distal perfusion cannula (DPC) in the superficial femoral artery

A distal perfusion cannula inserted into the superficial femoral artery restores antegrade flow to the ischemic limb during ongoing ECMO support.

Question 39: The oxygen transfer capacity of an ECMO membrane oxygenator is most directly influenced by:

Blood flow rate through the oxygenator (Correct answer)
Patient core body temperature alone
The patient's anticoagulation level
The crystalloid volume used for circuit priming

Correct answer: Blood flow rate through the oxygenator

Higher blood flow through the oxygenator increases oxygen transfer up to the membrane's rated capacity; inadequate flow limits contact time and gas exchange.

Question 40: What echo parameter during a VA ECMO weaning trial at 1 L/min flow best predicts successful decannulation?

LVEF > 35% and LVOT VTI > 12 cm (Correct answer)
Right ventricular fractional area change > 40%
Heart rate < 60 bpm
Pulmonary artery systolic pressure < 25 mmHg

Correct answer: LVEF > 35% and LVOT VTI > 12 cm

LVEF > 35% combined with LVOT VTI > 12 cm at minimal ECMO support correlates with sufficient cardiac recovery for decannulation.

Question 41: Neurological complications are most common in which ECMO patient population?

Neonates on VA ECMO (Correct answer)
Adults on VV ECMO for ARDS
Adults on VA ECMO for post-cardiac arrest
Pediatric patients on VV ECMO

Correct answer: Neonates on VA ECMO

Neonates on VA ECMO have the highest rates of neurological complications including IVH, stroke, and seizures due to their vulnerable developing brains.

Question 42: In VA-ECMO, increasing pump flow rate will primarily have which effect?

Increase arterial PaCO2 by reducing membrane dwell time
Increase mixed venous oxygen saturation by reducing recirculation
Decrease venous return to the native heart, reducing native cardiac preload (Correct answer)
Increase afterload on the left ventricle

Correct answer: Decrease venous return to the native heart, reducing native cardiac preload

Higher VA-ECMO flows drain more blood from the venous side, reducing preload to the right heart and diminishing native cardiac output.

Question 43: Which post-decannulation complication is most common after femoral VA ECMO?

Lymphocele formation
Femoral artery pseudoaneurysm or hematoma (Correct answer)
Retroperitoneal hematoma
Deep vein thrombosis

Correct answer: Femoral artery pseudoaneurysm or hematoma

Femoral artery pseudoaneurysm and local hematoma are the most frequently reported vascular complications following femoral arterial VA ECMO decannulation.

Question 44: What should be done if an air bubble is detected in the venous line?

Continue monitoring for changes.
Increase the pump speed.
Clamp the circuit & call for assistance. (Correct answer)
Add more anticoagulant.

Correct answer: Clamp the circuit & call for assistance.

An air bubble in the venous line poses an immediate and severe risk of air embolism to the patient, which can be life-threatening. Clamping the circuit immediately prevents the air from reaching the patient's circulation. Simultaneously calling for assistance ensures that trained personnel can safely remove the air and address the underlying cause, prioritizing patient safety.

Question 45: What is the best monitoring strategy to detect Harlequin syndrome early?

Right-hand (pre-ductal) pulse oximetry combined with arterial blood gas from the right radial artery (Correct answer)
Continuous end-tidal CO2 monitoring
Bilateral lower limb SpO2 comparison
Continuous SvO2 monitoring at the drainage cannula

Correct answer: Right-hand (pre-ductal) pulse oximetry combined with arterial blood gas from the right radial artery

Right radial arterial ABG and right-hand SpO2 reflect the coronary and cerebral circulation, revealing upper body hypoxia in Harlequin syndrome.

Question 46: Retroperitoneal hematoma during ECMO is most often related to:

Over-anticoagulation combined with femoral cannulation (Correct answer)
Surgical cannulation via neck vessels
Spontaneous bleeding from anticoagulation alone
Oxygenator rupture

Correct answer: Over-anticoagulation combined with femoral cannulation

Retroperitoneal hematoma frequently results from a combination of anticoagulation and femoral access, especially if the access wire or cannula traverses the posterior peritoneum.

Question 47: Which statement about ECMO circuit priming volume is most accurate for neonatal vs. adult patients?

Priming volume is clinically irrelevant for both populations
Neonatal ECMO priming volume is large relative to total blood volume, requiring blood prime to prevent severe hemodilution; adult circuits have proportionally smaller priming impact (Correct answer)
Priming volume is larger in adult circuits but clinically insignificant
Adult circuits require blood prime in all cases; neonates do not

Correct answer: Neonatal ECMO priming volume is large relative to total blood volume, requiring blood prime to prevent severe hemodilution; adult circuits have proportionally smaller priming impact

In neonates, ECMO circuit priming volume (approximately 300–500 mL) is comparable to or exceeds the infant's total blood volume (~85 mL/kg), necessitating a blood prime to prevent severe hemodilution and cardiovascular compromise.

Question 48: Which echocardiographic finding supports readiness for VA ECMO weaning?

LVEF ≥ 20–25% with VTI > 10 cm (Correct answer)
Normal diastolic function only
Absence of pericardial effusion
LVEF ≥ 50% with no regional wall motion abnormalities

Correct answer: LVEF ≥ 20–25% with VTI > 10 cm

An LVEF ≥ 20–25% with LVOT VTI > 10 cm suggests sufficient cardiac recovery to tolerate a weaning trial.

Question 49: How often should emergency simulation drills be conducted in ECMO units?

Only during orientation
Every 6 months
Quarterly (Correct answer)
Annually

Correct answer: Quarterly

Regular emergency simulation drills are vital in ECMO units to maintain team proficiency and readiness for high-stakes critical events. Conducting these drills quarterly ensures that staff remain familiar with protocols, equipment, and their roles, improving response times and coordination. Frequent practice helps identify system weaknesses and reinforces best practices, ultimately enhancing patient safety.

Question 50: Recirculation in a VV ECMO circuit results in:

Circuit thrombosis risk reduction
Increased patient SaO2 with reduced ECMO flow
Decreased effective oxygen delivery despite high circuit flow because oxygenated blood is re-drained before reaching the patient (Correct answer)
Improved CO2 removal efficiency

Correct answer: Decreased effective oxygen delivery despite high circuit flow because oxygenated blood is re-drained before reaching the patient

Recirculation occurs when oxygenated blood from the return cannula is immediately re-drained, reducing the fraction of oxygenated blood actually delivered to the patient.

Question 51: What does a sudden drop in mean arterial pressure (MAP) indicate?

Low oxygen delivery
Possible hypovolemia or sepsis (Correct answer)
Improved heart function
Increased blood viscosity

Correct answer: Possible hypovolemia or sepsis

A sudden drop in mean arterial pressure (MAP) indicates a significant decrease in systemic vascular resistance or circulating blood volume. Hypovolemia (low blood volume) or sepsis (widespread infection leading to vasodilation) are common causes of hypotension in critically ill ECMO patients. This drop in MAP compromises organ perfusion and requires immediate investigation and intervention to prevent organ damage.

Question 52: Recirculation fraction in VV-ECMO can best be minimized by:

Optimizing cannula positioning to maximize distance between drainage and return ports (Correct answer)
Increasing the FDO2 to 1.0
Reducing ECMO blood flow rate only
Increasing sweep gas flow rate

Correct answer: Optimizing cannula positioning to maximize distance between drainage and return ports

Positioning the drainage and return cannulas far apart (e.g., femoral drainage with internal jugular return) minimizes the probability that oxygenated blood is immediately re-drained.

Question 53: Which anticoagulation monitoring approach is recommended when heparin-induced thrombocytopenia (HIT) is suspected on ECMO?

Switch to warfarin immediately
Increase heparin dose and monitor anti-Xa levels
Discontinue heparin and transition to bivalirudin, monitoring aPTT or ACT (Correct answer)
Administer argatroban with anti-Xa monitoring

Correct answer: Discontinue heparin and transition to bivalirudin, monitoring aPTT or ACT

Bivalirudin is the preferred anticoagulant when HIT is suspected or confirmed during ECMO, monitored via aPTT or ACT.

Question 54: Which communication failure is most associated with ECMO adverse events according to quality reviews?

Failure to update family contact information
Inadequate handoff of circuit status and recent alarms (Correct answer)
Failure to notify laboratory of specimen priority
Delay in notifying dietary of NPO status

Correct answer: Inadequate handoff of circuit status and recent alarms

Inadequate handoff communication of circuit parameters and unresolved alarms is consistently identified in ECMO adverse event analyses.

Question 55: Which ventilator strategy is recommended before attempting VV ECMO weaning to protect the recovering lung?

High tidal volume to re-recruit atelectasis
High PEEP and low tidal volume (lung-protective ventilation) (Correct answer)
Spontaneous breathing mode without PEEP
Pressure control with high FiO2

Correct answer: High PEEP and low tidal volume (lung-protective ventilation)

Lung-protective ventilation with low tidal volumes and appropriate PEEP should be confirmed adequate before and during weaning to prevent re-injury.

Question 56: The SvO2 (venous oxygen saturation) measured in the ECMO drainage limb reflects:

Anticoagulation adequacy
The patient's oxygen delivery-consumption balance; falling SvO2 indicates increased O2 extraction due to inadequate DO2 (Correct answer)
Circuit recirculation percentage only
The oxygenator's transfer efficiency

Correct answer: The patient's oxygen delivery-consumption balance; falling SvO2 indicates increased O2 extraction due to inadequate DO2

Drainage limb SvO2 reflects mixed venous saturation, indicating the balance between oxygen delivery and consumption — falling values signal inadequate systemic oxygen delivery.

Question 57: What protocol should be followed in case of a fire near an ECMO machine?

Call code red and protect power sources (Correct answer)
Remove ventilator
Unplug ECMO and stop therapy
Evacuate patient immediately

Correct answer: Call code red and protect power sources

In a fire emergency near an ECMO machine, the immediate priority is patient and staff safety, followed by protecting critical equipment. Calling a "Code Red" alerts the entire facility's emergency response team, while protecting power sources for the ECMO machine is crucial. This allows for continued life support for as long as safely possible before potential evacuation, balancing immediate safety with ongoing patient care.

Question 58: The rated flow of an ECMO oxygenator refers to:

The maximum sweep gas flow before membrane damage
The blood flow rate at which outflow blood oxygen saturation reaches 95% with inlet saturation of 65% (Correct answer)
The minimum flow required to prevent circuit thrombosis
The maximum blood flow the pump can generate

Correct answer: The blood flow rate at which outflow blood oxygen saturation reaches 95% with inlet saturation of 65%

Oxygenator rated flow is defined as the blood flow at which outlet saturation reaches 95% given a standardized inlet saturation of 65%, indicating gas transfer efficiency.

Question 59: In a patient on VA-ECMO, mixed venous oxygen saturation (SvO2) primarily reflects:

The balance between systemic oxygen delivery and consumption (Correct answer)
The patient's native pulmonary function
The function of the membrane oxygenator
The degree of systemic anticoagulation

Correct answer: The balance between systemic oxygen delivery and consumption

SvO2 represents the oxygen remaining after tissues extract what they need; a low SvO2 signals that DO2 is insufficient relative to VO2.

Question 60: Massive air embolism in the ECMO circuit requires immediate:

Decreasing sweep gas to prevent further air entrainment
Increasing ECMO flow to dilute the air
Clamping the circuit and placing the patient in Trendelenburg position (Correct answer)
Administering 100% FiO2 only

Correct answer: Clamping the circuit and placing the patient in Trendelenburg position

Clamping the circuit to prevent air delivery to the patient plus Trendelenburg positioning to trap air in the right side is the immediate response to massive air embolism.

Question 61: What action should be taken if signs of heparin-induced thrombocytopenia (HIT) appear?

Stop heparin and switch to alternative anticoagulant (Correct answer)
Flush the circuit
Increase heparin dose
Reduce ECMO flow

Correct answer: Stop heparin and switch to alternative anticoagulant

Heparin-induced thrombocytopenia (HIT) is a severe, immune-mediated complication where heparin causes paradoxical thrombosis despite low platelet counts. Continuing heparin would worsen the condition and increase the risk of life-threatening blood clots. Therefore, immediate cessation of heparin and switching to an alternative anticoagulant is crucial to prevent further complications and manage this critical condition effectively.

Question 62: After successful ECMO weaning, anticoagulation is typically:

Continued at full therapeutic doses for 48 hours post-decannulation
Maintained with heparin drip for one week
Transitioned to prophylactic dosing or bridged to oral anticoagulation based on indication (Correct answer)
Discontinued immediately at decannulation

Correct answer: Transitioned to prophylactic dosing or bridged to oral anticoagulation based on indication

Post-decannulation anticoagulation is individualized — prophylactic dosing or bridging to oral agents is common depending on thrombosis risk and bleeding history.

Question 63: Persistent metabolic acidosis in an ECMO patient with adequate circuit flows and a functioning oxygenator most likely indicates:

Oxygenator membrane failure
Inadequate total oxygen delivery relative to metabolic oxygen consumption (Correct answer)
Excessive sweep gas flow causing respiratory alkalosis compensation
Circuit clotting in the venous drainage limb only

Correct answer: Inadequate total oxygen delivery relative to metabolic oxygen consumption

When tissues consume more oxygen than is delivered, anaerobic metabolism produces lactic acid, causing metabolic acidosis despite technically adequate ECMO function.

Question 64: What does a high pre-membrane pressure reading indicate?

Low blood volume.
High patient CO2.
Good gas exchange.
Membrane oxygenator obstruction. (Correct answer)

Correct answer: Membrane oxygenator obstruction.

Pre-membrane pressure reflects the resistance blood encounters as it enters and passes through the oxygenator. A high pre-membrane pressure reading indicates increased resistance within the oxygenator, most commonly due to clot formation or fibrin deposition on the membrane. This obstruction impedes blood flow and gas exchange, signaling a potential failure or impending failure of the oxygenator.

Question 65: A sudden drop in ECMO flow with high circuit pressures and visible dark, sluggish blood most likely indicates:

Patient hypovolemia
Cannula kinking
Massive circuit thrombosis (Correct answer)
Pump failure

Correct answer: Massive circuit thrombosis

Dark sluggish blood with rising pressures and dropping flow indicates widespread circuit thrombosis, requiring emergency circuit change-out.

Question 66: Acute hemolysis on ECMO is best indicated by which laboratory finding?

Falling platelet count
Rising LDH and plasma-free hemoglobin > 50 mg/dL (Correct answer)
Rising serum creatinine
Elevated direct bilirubin

Correct answer: Rising LDH and plasma-free hemoglobin > 50 mg/dL

Elevated LDH and plasma-free hemoglobin above 50 mg/dL are the hallmark laboratory indicators of significant hemolysis in ECMO circuits.

Question 67: During a VV ECMO weaning trial, sweep gas flow is typically reduced to assess:

Oxygenator membrane integrity
Hemodynamic stability off ECMO
Native lung's ability to maintain gas exchange independently (Correct answer)
Circuit blood flow tolerance

Correct answer: Native lung's ability to maintain gas exchange independently

Reducing sweep gas (CO2 removal drive) while monitoring SpO2 and PaCO2 tests whether the native lungs can sustain adequate gas exchange.

Question 68: The Avalon Elite bicaval dual-lumen cannula is designed for insertion via which access site?

Femoral artery
Left subclavian vein
Femoral vein
Right internal jugular vein (Correct answer)

Correct answer: Right internal jugular vein

The Avalon Elite is designed for right internal jugular vein insertion, with drainage from both the SVC and IVC and return directed toward the tricuspid valve.

Question 69: Why is daily fluid balance monitoring important in ECMO therapy?

To manage anticoagulation
To monitor blood sugar
To prevent fluid overload (Correct answer)
To calculate oxygen requirements

Correct answer: To prevent fluid overload

Critically ill ECMO patients are prone to fluid retention due to systemic inflammation, capillary leak, and impaired renal function. Meticulous daily fluid balance monitoring is essential to prevent fluid overload, which can lead to pulmonary edema, impaired oxygenation, increased cardiac workload, and other complications. Maintaining euvolemia is crucial for optimal outcomes and preventing secondary organ dysfunction.

Question 70: Why is maintaining optimal hemodynamics important in ECMO patients?

To minimize sedative use
To control oxygen saturation
To stabilize glucose levels
To support end-organ perfusion (Correct answer)

Correct answer: To support end-organ perfusion

Maintaining optimal hemodynamics, including adequate blood pressure and cardiac output, is crucial for ensuring sufficient blood flow and oxygen delivery to all vital organs (end-organ perfusion). ECMO supports the heart and lungs, but stable hemodynamics are essential to prevent organ dysfunction and injury, which can lead to multi-organ failure and worsen patient outcomes.

Question 71: Pre-membrane pressure (P1), post-membrane pressure (P2), and venous return pressure (P3) are used to calculate which ECMO parameter?

Transmembrane pressure gradient (ΔP), indicating oxygenator resistance (Correct answer)
Pump RPM
Circuit oxygen delivery (DO2c)
Recirculation fraction

Correct answer: Transmembrane pressure gradient (ΔP), indicating oxygenator resistance

Transmembrane pressure (ΔP = P1 − P2) reflects resistance across the oxygenator — rising ΔP indicates developing oxygenator thrombosis or fiber fouling.

Question 72: In the ELSO registry, which diagnosis has the highest ECMO survival rate in neonates?

Sepsis
Congenital heart disease
Meconium aspiration syndrome (Correct answer)
Congenital diaphragmatic hernia

Correct answer: Meconium aspiration syndrome

Meconium aspiration syndrome consistently shows the highest survival rates among neonatal ECMO indications in ELSO data.

Question 73: Structured ECMO handoff communication (SBAR) should include which ECMO-specific element?

Nursing shift assignments only
Current circuit flow, pressures, sweep gas settings, anticoagulation status, and recent alarms (Correct answer)
Patient demographics and insurance information
Dietary preferences and family visitation schedule

Correct answer: Current circuit flow, pressures, sweep gas settings, anticoagulation status, and recent alarms

ECMO-specific SBAR handoff must include flow, pressure parameters, sweep gas, anticoagulation status, and any recent alarms or interventions.

Question 74: Which ECMO system feature allows simultaneous hemodialysis circuit integration?

A built-in roller pump on the drainage line
A specially designed dual-chamber oxygenator
An extended bridge connector for parallel flow
An inline CRRT port or circuit tap point allowing CRRT machine connection to the ECMO circuit (Correct answer)

Correct answer: An inline CRRT port or circuit tap point allowing CRRT machine connection to the ECMO circuit

CRRT machines can be connected to dedicated ports or tap points on the ECMO circuit, allowing concurrent renal replacement therapy without additional vascular access.

Question 75: What is a 'time-limited trial' in the context of ECMO?

A trial of oral medications while on ECMO
A brief disconnection from ECMO to assess native organ function
An agreed-upon period during which ECMO continues while defined recovery benchmarks are reassessed before deciding to continue or withdraw (Correct answer)
A brief period of increased flow to test circuit integrity

Correct answer: An agreed-upon period during which ECMO continues while defined recovery benchmarks are reassessed before deciding to continue or withdraw

A time-limited trial is a prospective agreement to continue ECMO for a defined period, reassessing predetermined clinical milestones before deciding whether to proceed or withdraw.

Question 76: What is the recommended action if the ECMO circuit shows a visible clot?

Replace the affected circuit component. (Correct answer)
Lower the flow rate to reduce shear stress.
Flush the circuit.
Ignore unless the patient is symptomatic.

Correct answer: Replace the affected circuit component.

A visible clot in the ECMO circuit indicates a significant risk of circuit failure, impaired function, or embolization to the patient. Attempting to flush the clot can dislodge it, sending it into the patient's circulation, which is highly dangerous. The safest and most effective intervention is to replace the affected circuit component or the entire circuit to prevent further complications and ensure patient safety.

Question 77: Hypertension (systemic) is a common complication in neonatal ECMO and is best managed by:

Increasing ECMO flow to reduce cardiac work
Antihypertensive therapy to prevent intracranial hemorrhage (Correct answer)
Sedation alone
Decreasing circuit temperature

Correct answer: Antihypertensive therapy to prevent intracranial hemorrhage

Systemic hypertension in neonates on ECMO significantly increases the risk of intracranial hemorrhage and must be treated with antihypertensive agents.

Question 78: Recirculation in VV-ECMO refers to which of the following phenomena?

Oxygenated return blood being immediately re-drained into the circuit before reaching the patient (Correct answer)
Air entrainment on the venous side of the circuit
Blood flowing backward through the pump head
Clot formation causing retrograde flow in the oxygenator

Correct answer: Oxygenated return blood being immediately re-drained into the circuit before reaching the patient

Recirculation occurs when oxygenated blood exiting the return cannula is pulled back into the drainage cannula, reducing effective ECMO support.

Question 79: Chatter (vibration/cavitation) in the drainage tubing most commonly indicates:

Excessive circuit flow rates
Hypovolemia or high resistance at the drainage cannula causing inlet suction (Correct answer)
Oxygenator thrombosis
Air entrainment from the venous access site

Correct answer: Hypovolemia or high resistance at the drainage cannula causing inlet suction

Drainage tubing chatter reflects excessive inlet suction, typically caused by hypovolemia, cannula malposition, or high drainage resistance.

Question 80: What is the most likely cause of decreased ECMO flow rate?

Excessive anticoagulation.
Cannula malposition or kinking. (Correct answer)
Too much sweep gas.
Circuit warming up.

Correct answer: Cannula malposition or kinking.

The cannulas are essential components that connect the patient to the ECMO circuit. If a cannula becomes kinked, dislodged, or improperly positioned, it creates an obstruction to blood flow either entering or leaving the circuit. This mechanical impediment directly reduces the ECMO flow rate, compromising the delivery of support to the patient and requiring immediate assessment and correction.

Question 81: Which organization provides the primary credentialing framework and competency standards for ECMO specialists in the US?

ABIM (American Board of Internal Medicine)
AABB (American Association of Blood Banks)
ELSO (Extracorporeal Life Support Organization) (Correct answer)
AARC (American Association for Respiratory Care)

Correct answer: ELSO (Extracorporeal Life Support Organization)

ELSO provides international ECMO guidelines, training standards, and the primary registry for outcomes that support ECMO specialist competency frameworks.

Question 82: Which pressure monitor location in the ECMO circuit provides the best early warning of drainage cannula obstruction?

Post-oxygenator pressure (P2)
Pre-pump (venous inlet) negative pressure gauge (Correct answer)
Arterial line pressure on the patient side
Bridge connector pressure tap

Correct answer: Pre-pump (venous inlet) negative pressure gauge

Pre-pump (inlet/venous) pressure monitors drainage line negative pressure — increasingly negative values indicate drainage obstruction or hypovolemia.

Question 83: The venous drainage (pre-pump) pressure in an ECMO circuit should ideally be maintained at:

Strongly positive (>+100 mmHg) to ensure adequate preload
Strongly negative (less than -200 mmHg) to maximize flow
Mildly negative (approximately -20 to -80 mmHg) (Correct answer)
Zero (equal to atmospheric pressure)

Correct answer: Mildly negative (approximately -20 to -80 mmHg)

Mildly negative pre-pump pressures indicate adequate venous drainage without excessive suction; highly negative pressures suggest hypovolemia or cannula obstruction and risk hemolysis and cavitation.

Question 84: Which sign during VV ECMO decannulation indicates a potentially dangerous air embolism risk?

Low ACT at time of decannulation
Patient coughing or taking deep breath during cannula removal (Correct answer)
Venous cannula positioned in the IVC
High ECMO flow rates just before removal

Correct answer: Patient coughing or taking deep breath during cannula removal

Inspiration during venous decannulation creates negative intrathoracic pressure that can entrain air through the open cannulation site into the venous system.

Question 85: Transmembrane pressure (TMP) across the ECMO oxygenator is monitored primarily to detect:

Changes in sweep gas composition
Changes in the patient's cardiac output
Patient fluid balance status
Clot formation or membrane failure increasing resistance within the oxygenator (Correct answer)

Correct answer: Clot formation or membrane failure increasing resistance within the oxygenator

A rising TMP indicates increased resistance across the oxygenator, often due to thrombus formation, signaling the need for oxygenator replacement.

Question 86: Which ECMO circuit component is responsible for maintaining circuit temperature?

The circuit tubing material
The oxygenator membrane alone
The centrifugal pump head
A heat exchanger (water bath heater-cooler unit) incorporated into or alongside the oxygenator (Correct answer)

Correct answer: A heat exchanger (water bath heater-cooler unit) incorporated into or alongside the oxygenator

A heater-cooler unit circulates temperature-controlled water through a heat exchanger adjacent to the oxygenator to regulate patient blood temperature.

Question 87: Which patient population was the original primary indication when ECMO was first widely adopted clinically?

Post-cardiac surgery adults
Adults with ARDS
Pediatric patients with septic shock
Neonates with respiratory failure (Correct answer)

Correct answer: Neonates with respiratory failure

ECMO was first widely adopted for neonates with respiratory failure in the 1970s–1980s, becoming standard of care for conditions like MAS and CDH.

Question 88: What is a typical sign of impaired venous return affecting hemodynamics?

Hypothermia
Tachypnea
Jugular vein distension (Correct answer)
Low CVP

Correct answer: Jugular vein distension

Impaired venous return means blood is not effectively flowing back to the heart, causing it to back up in the venous system. Jugular vein distension (JVD) is a classic clinical sign of increased central venous pressure, which directly indicates this backup of blood. This accumulation in the superior vena cava and its tributaries is a clear indicator of compromised venous return affecting hemodynamics.

Question 89: In VV-ECMO, which factor most directly determines the patient's cardiac output?

Sweep gas FiO2 setting
ECMO pump flow rate
Oxygenator membrane surface area
The patient's own intrinsic cardiac function and vascular tone (Correct answer)

Correct answer: The patient's own intrinsic cardiac function and vascular tone

VV-ECMO does not provide direct cardiac support; the patient's native cardiac output depends entirely on their own myocardial function and loading conditions.

Question 90: What is a critical sign of poor perfusion in an ECMO patient?

Warm extremities
Cold, mottled skin (Correct answer)
High urine output
Brisk capillary refill

Correct answer: Cold, mottled skin

Cold, mottled skin indicates poor peripheral perfusion, meaning that blood flow to the extremities is compromised. This is a critical sign that the body is shunting blood away from non-vital areas to preserve flow to essential organs, often due to low cardiac output, hypovolemia, or severe vasoconstriction. It signals inadequate oxygen delivery to tissues, despite ECMO support, and requires immediate intervention.

Question 91: What is the primary purpose of a 'bridge connector' in an ECMO circuit?

To regulate anticoagulant delivery into the circuit
To connect the ECMO circuit to a hemodialysis machine
To connect the arterial and venous limbs to bypass the pump
To allow the circuit to be clamped and recirculated when the patient is briefly disconnected or during circuit changes (Correct answer)

Correct answer: To allow the circuit to be clamped and recirculated when the patient is briefly disconnected or during circuit changes

A bridge connector allows the circuit to recirculate when the patient limbs are clamped, maintaining circuit patency and preventing stasis/clotting during brief interventions.

Question 92: Which team member typically leads the ECMO cannulation procedure in most US ECMO centers?

Perfusionist
Bedside ECMO nurse
Cardiothoracic or vascular surgeon (Correct answer)
Critical care intensivist

Correct answer: Cardiothoracic or vascular surgeon

Cardiothoracic or vascular surgeons most commonly lead cannulation at US centers, though practices vary by institution.

Question 93: Which clinical sign most specifically indicates a cannula-related complication during ECMO?

Sudden unexplained desaturation with loss of circuit flow (Correct answer)
New onset atrial fibrillation
Fever of 38.5°C
Rising creatinine over 48 hours

Correct answer: Sudden unexplained desaturation with loss of circuit flow

Sudden desaturation combined with loss of circuit flow suggests cannula dislodgment, kinking, or obstruction — a direct cannula-related emergency.

Question 94: Thrombocytopenia on ECMO is caused by all of the following EXCEPT:

Increased thrombopoietin production causing sequestration (Correct answer)
Platelet consumption by circuit surfaces
Hemodilution from circuit priming
Heparin-induced thrombocytopenia

Correct answer: Increased thrombopoietin production causing sequestration

Thrombocytopenia on ECMO is caused by consumption, HIT, and hemodilution — thrombopoietin actually promotes platelet production rather than causing sequestration.

Question 95: What is the purpose of having a 'crash cart' near ECMO patients?

To deliver oxygen
To store ECMO circuits
To initiate CPR and provide emergency drugs (Correct answer)
To administer blood products

Correct answer: To initiate CPR and provide emergency drugs

ECMO patients are critically ill and can rapidly decompensate, requiring immediate resuscitation. A crash cart contains essential equipment and medications for cardiopulmonary resuscitation (CPR), including defibrillators, airway management tools, and emergency drugs. Its proximity ensures rapid access to life-saving interventions during a cardiac arrest or other acute medical emergencies, optimizing patient outcomes.

Question 96: The 'Harlequin' (North-South) syndrome in femoral VA-ECMO occurs when:

Pump speed is too high, causing hemolysis in the circuit
The upper body receives desaturated native cardiac output while the lower body receives oxygenated ECMO blood (Correct answer)
The drainage cannula becomes acutely obstructed
Air embolism enters the arterial return cannula

Correct answer: The upper body receives desaturated native cardiac output while the lower body receives oxygenated ECMO blood

When the native heart partially recovers and ejects desaturated blood, the coronary arteries and brain may receive poorly oxygenated blood while the ECMO return site (femoral artery) perfuses the lower body with well-oxygenated blood.

Question 97: In a hollow-fiber membrane oxygenator, which direction does CO2 most rapidly transfer?

From sweep gas into the blood
CO2 does not transfer across hollow-fiber membranes
Bidirectionally at equal rates
From blood into the sweep gas (blood to gas) (Correct answer)

Correct answer: From blood into the sweep gas (blood to gas)

CO2 moves from the blood (high partial pressure) across the hollow-fiber membrane into the sweep gas (low partial pressure) due to its high membrane diffusibility.

Question 98: Why is continuous monitoring of lactate levels important in ECMO patients?

To detect kidney failure
To assess lung compliance
To monitor anticoagulation
To evaluate tissue perfusion (Correct answer)

Correct answer: To evaluate tissue perfusion

Lactate is a byproduct of anaerobic metabolism, which occurs when tissues do not receive enough oxygen. Elevated lactate levels indicate inadequate tissue perfusion and oxygen delivery, suggesting cellular hypoxia and metabolic stress. Continuous monitoring helps assess the effectiveness of ECMO support in meeting the body's metabolic demands and guides interventions to improve perfusion.

Question 99: Which role in the ECMO team is primarily responsible for managing the ventilator during ECMO?

Perfusionist
Bedside nurse
ECMO specialist
Respiratory therapist in collaboration with the intensivist (Correct answer)

Correct answer: Respiratory therapist in collaboration with the intensivist

Respiratory therapists, working under intensivist orders, manage ventilator settings during ECMO support including lung-protective strategies.

Question 100: Which tool is commonly used to assess pain in ECMO patients?

NIH Stroke Scale
FLACC scale (Correct answer)
MMSE
GCS

Correct answer: FLACC scale

The FLACC (Face, Legs, Activity, Cry, Consolability) scale is a behavioral pain assessment tool commonly used for non-verbal or pre-verbal patients, including infants, young children, and critically ill adults who cannot self-report pain. Since many ECMO patients are sedated or intubated, the FLACC scale provides a reliable method to assess their pain levels based on observable behaviors, ensuring appropriate pain management.

Certified ECMO Specialist (CES) Exam

This certification validates the knowledge and skills of healthcare professionals in managing Extracorporeal Membrane Oxygenation (ECMO) therapy.

100

Questions

120 min

Time Limit

75%

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