Free PHTLS Pre & Post Questions and Answers 1 — Questions and Answers
Question 1: Which kind of motorcycle crash is most frequently linked to bilateral femur fractures?
- Head-on impact (Correct answer)
- Angular impact
- Rear impact
- Bike-road impact
Correct answer: Head-on impact
In a head-on motorcycle impact, the rider's legs are often forcefully trapped between the motorcycle and the object of impact. This mechanism transmits immense kinetic energy directly through both femurs, making bilateral femur fractures a highly characteristic injury pattern for this type of collision.
Question 2: Which of the following describes the most likely occurrence of pericardial tamponade?
- Frontal impact vehicle crash
- Stab wound to the chest (Correct answer)
- V
- Fall from a height
Correct answer: Stab wound to the chest
Pericardial tamponade occurs when blood or fluid accumulates in the pericardial sac, compressing the heart. A stab wound to the chest is a common cause because it can directly penetrate the heart or major blood vessels, leading to rapid bleeding into the pericardial space. This direct injury mechanism makes it more likely than blunt trauma from a frontal impact or fall.
Question 3: The most trustworthy way to determine the degree of hypothermia in a patient in the prehospital scenario is to:
- Presence or absence of shivering
- Rectal temperature (Correct answer)
- Heart rate < 60
- Oral temperature
Correct answer: Rectal temperature
Rectal temperature provides the most accurate and reliable measurement of core body temperature in the prehospital setting. Unlike oral or axillary temperatures, it is less susceptible to environmental factors, patient cooperation, or respiratory status, making it the most trustworthy method for assessing the true degree of hypothermia.
Question 4: PHTLS is based on the idea that:
- EMTs must work only under on-line medical direction when caring for trauma patients
- EMTs must treat all trauma patient based on protocols
- EMTs are capable of working independently of medical direction
- EMTs are capable of sound patient care judgment, given an adequate knowledge base (Correct answer)
Correct answer: EMTs are capable of sound patient care judgment, given an adequate knowledge base
PHTLS emphasizes critical thinking and the application of trauma principles rather than rigid adherence to protocols. It empowers prehospital providers to make informed, independent judgments based on their assessment and understanding of trauma physiology, provided they have a strong knowledge base. This approach fosters adaptability and effective patient care in diverse trauma scenarios.
Question 5: A male adult suffered a serious cut on his distal thigh. The wound is oozing bright crimson blood. The bleeding is not being stopped by direct pressure. What would be the best course of action now?
- Elevate the leg and apply pressure to the femoral artery
- Apply a topical hemostatic agent and transport
- Maintain direct pressure and transport immediately
- Apply a tourniquet and tighten it until bleeding stops (Correct answer)
Correct answer: Apply a tourniquet and tighten it until bleeding stops
Bright crimson, oozing blood that is not controlled by direct pressure indicates significant arterial or major venous bleeding. When direct pressure fails to control life-threatening extremity hemorrhage, a tourniquet is the most effective and recommended intervention. It should be applied proximally to the wound and tightened until the bleeding completely stops.
Question 6: Which of the following scenarios calls for a patient to be labeled as having suffered a major trauma?
- Bleeding from the nose
- An extremity fracture
- Deployment of air bags in a motor vehicle crash
- Preexisting major medical problem (Correct answer)
Correct answer: Preexisting major medical problem
A preexisting major medical problem significantly impacts a trauma patient's physiological reserve and ability to compensate for injuries. Conditions like heart disease, diabetes, or chronic lung disease increase the risk of complications and adverse outcomes, thus classifying the patient as having suffered major trauma, regardless of the initial injury mechanism.
Question 7: Which part of the brain might suffer a cerebral contusion if a patient is hit with a baseball bat in the back of the head?
- Parietal
- Frontal and occipital
- Frontal
- Occipital (Correct answer)
Correct answer: Occipital
A direct blow to the back of the head primarily impacts the occipital lobe, which is located in that region of the brain. A cerebral contusion is a bruise of the brain tissue, and it typically occurs directly beneath the point of impact (coup injury). Therefore, the occipital lobe is the most likely area to suffer a contusion from such a blow.
Question 8: What is the cornerstone of trauma care that works well?
- The ability to quickly locate and manage life-threatening and potentially life-threatening injuries (Correct answer)
- Protocols permitting invasive airway procedures
- Effective spinal immobilization skills
- The ability to administer large amounts of crystalloid fluids
Correct answer: The ability to quickly locate and manage life-threatening and potentially life-threatening injuries
The cornerstone of effective trauma care is the rapid and systematic identification and management of immediate life-threatening and potentially life-threatening injuries. This systematic approach, often following an 'ABCDE' assessment, ensures that critical conditions like airway obstruction, uncontrolled hemorrhage, or tension pneumothorax are addressed first, maximizing the patient's chances of survival.
Question 9: In the prehospital context, which assessment is most useful for distinguishing between hemorrhagic shock and neurogenic shock?
- Neurologic status
- Abdomen
- Skin (Correct answer)
- Blood pressure
Correct answer: Skin
Skin assessment is crucial for differentiating between hemorrhagic and neurogenic shock. In hemorrhagic (hypovolemic) shock, the skin is typically cool, pale, and clammy due to compensatory vasoconstriction. In contrast, neurogenic shock often presents with warm, dry, and flushed skin below the level of injury due to the loss of sympathetic tone and resulting vasodilation.
Question 10: What is the most frequent reason why trauma patients experience upper airway obstruction?
- Tongue (Correct answer)
- Blood
- Vomitus
- Teeth
Correct answer: Tongue
In an unconscious or semi-conscious trauma patient, the most frequent cause of upper airway obstruction is the relaxation of the muscles supporting the tongue. This causes the tongue to fall back and occlude the pharynx. Simple airway maneuvers like a jaw-thrust or head-tilt/chin-lift can often effectively relieve this obstruction.
Question 11: When confirming the insertion of an endotracheal tube in a patient who has a perfusing rhythm, which adjunct device is preferred?
- Pulse oximeter
- End-tidal CO2 monitoring (capnography) (Correct answer)
- Stethoscope
- Esophageal detector device
Correct answer: End-tidal CO2 monitoring (capnography)
End-tidal CO2 monitoring (capnography) is the most reliable and preferred method for confirming endotracheal tube placement in a patient with a perfusing rhythm. The presence of consistent CO2 waveforms indicates that the tube is correctly placed in the trachea and not the esophagus, providing continuous verification of proper ventilation.
Free PHTLS Pre & Post Questions and Answers 1
Which kind of motorcycle crash is most frequently linked to bilateral femur fractures?