PHTLS - Prehospital Trauma Life Support Special Trauma Considerations Questions and Answers — Questions and Answers
Question 1: An 82-year-old male who takes metoprolol for hypertension falls and complains of abdominal pain. His vital signs are BP 100/60 mmHg, HR 70 bpm, and RR 22. Why should the provider be concerned about this patient's heart rate?
- It is a normal heart rate and not a cause for concern in this context.
- The patient's beta-blocker medication may be masking tachycardia associated with hemorrhagic shock. (Correct answer)
- The heart rate suggests a primary cardiac event, like a myocardial infarction, caused the fall.
- A heart rate of 70 is indicative of a neurogenic shock state.
Correct answer: The patient's beta-blocker medication may be masking tachycardia associated with hemorrhagic shock.
Geriatric patients often take medications like beta-blockers (e.g., metoprolol) that blunt the body's normal tachycardic response to hypovolemia. In a trauma patient with potential internal bleeding, a 'normal' heart rate can be a misleading sign that masks underlying shock.
Question 2: A 5-year-old child falls from a height. Initially, they are alert with a BP of 95/60 mmHg and HR of 130 bpm. Fifteen minutes later, the child suddenly becomes lethargic and their BP drops to 70/40 mmHg. This rapid deterioration is best explained by which pediatric physiological principle?
- Children have an underdeveloped sympathetic nervous system that fails quickly.
- Pediatric head injuries always cause immediate and severe hypotension.
- A child's cardiovascular system can compensate for significant volume loss until a critical point, after which it decompensates rapidly. (Correct answer)
- The child's lower total blood volume makes even minor blood loss catastrophic.
Correct answer: A child's cardiovascular system can compensate for significant volume loss until a critical point, after which it decompensates rapidly.
Children have very effective compensatory mechanisms, including intense vasoconstriction and tachycardia, which allow them to maintain a normal blood pressure despite losing up to 25% or more of their blood volume. However, once these mechanisms are exhausted, they experience a sudden and rapid cardiovascular collapse. Hypotension is a late and ominous sign of shock in children.
Question 3: You are treating a 30-year-old female who is 34 weeks pregnant and was involved in a motor vehicle collision. She is fully immobilized on a backboard. During transport, she becomes pale, lightheaded, and her BP drops to 88/50 mmHg. What is the MOST appropriate immediate intervention?
- Manually displace the uterus to the patient's left side. (Correct answer)
- Administer a 1-liter bolus of lactated Ringer's solution.
- Place the patient in the Trendelenburg position.
- Rapidly transport without further intervention.
Correct answer: Manually displace the uterus to the patient's left side.
In a pregnant patient beyond 20 weeks gestation, the gravid uterus can compress the inferior vena cava when she is in the supine position, which significantly reduces venous return and cardiac output. This is known as supine hypotensive syndrome. The most critical intervention is to relieve this compression by manually displacing the uterus to the left or tilting the entire backboard 15-30 degrees to the left.
Question 4: Which of the following represents a significant challenge in the prehospital management of a trauma patient with morbid obesity?
- They have a decreased risk of pulmonary contusion due to excess chest wall padding.
- Blood pressure is typically lower, which can mask the signs of developing shock.
- The risk of airway compromise during immobilization is significantly lower.
- Accurate assessment and intervention are often hindered by obscured anatomical landmarks. (Correct answer)
Correct answer: Accurate assessment and intervention are often hindered by obscured anatomical landmarks.
Excess adipose tissue in morbidly obese patients can make prehospital assessment and management extremely difficult. It can obscure landmarks for needle decompression, make IV access challenging, and impede an accurate physical exam of the abdomen, pelvis, and chest. Airway management is also notoriously more difficult in this patient population.
Question 5: A 72-year-old male on warfarin (Coumadin) sustains a ground-level fall and strikes his head. His only complaint is a minor headache, his GCS is 15, and there are no external signs of trauma. What is the most critical consideration for this patient?
- The risk of a significant intracranial hemorrhage is high, even with a minor mechanism of injury. (Correct answer)
- The patient can be safely released to a family member for observation at home.
- The primary concern is a cervical spine fracture, as head injury is unlikely.
- Warfarin use will cause falsely elevated blood pressure readings.
Correct answer: The risk of a significant intracranial hemorrhage is high, even with a minor mechanism of injury.
Patients taking anticoagulant medications like warfarin are at a significantly increased risk for life-threatening intracranial hemorrhage, even from seemingly minor trauma. A normal initial neurological exam does not rule out a developing bleed, which can progress rapidly. These patients require a high index of suspicion and urgent transport for definitive imaging and evaluation.
Question 6: You are treating a patient with extensive full-thickness burns to the face and neck after being pulled from a house fire. The patient has a hoarse voice, carbonaceous sputum, and singed nasal hairs. What is the highest priority intervention?
- Applying cool, moist sterile dressings to the facial burns.
- Calculating the Total Body Surface Area (TBSA) to guide fluid resuscitation.
- Anticipating the need for a definitive airway and preparing for early intubation. (Correct answer)
- Obtaining intravenous access for immediate pain management.
Correct answer: Anticipating the need for a definitive airway and preparing for early intubation.
The presence of facial burns, hoarseness, carbonaceous sputum, and singed nasal hairs are all strong indicators of a significant inhalation injury. This can lead to rapid and severe upper airway edema and obstruction. Securing a definitive airway via endotracheal intubation is the highest priority and should be done early, before swelling makes the procedure difficult or impossible.
PHTLS - Prehospital Trauma Life Support Special Trauma Considerations Questions and Answers
An 82-year-old male who takes metoprolol for hypertension falls and complains of abdominal pain.
His vital signs are BP 100/60 mmHg, HR 70 bpm, and RR 22.
Why should the provider be concerned about this patient's heart rate?