ATLS - Advanced Trauma Life Support Trauma in Special Populations Questions and Answers 1 — Questions and Answers
Question 1: An 82-year-old female is brought to the trauma center after a ground-level fall. She is on warfarin for atrial fibrillation and metoprolol for hypertension. Her blood pressure is 110/70 mmHg, heart rate is 80 bpm, and she is lethargic. What is the most appropriate interpretation of her vital signs?
- The patient is hemodynamically stable and can proceed to a non-urgent secondary survey.
- The vital signs are unreliable due to her age, and a lactate level should be sent immediately.
- The patient is likely in compensated shock, masked by the effects of her beta-blocker medication. (Correct answer)
- Hypotension is not a concern unless the systolic blood pressure is below 90 mmHg.
Correct answer: The patient is likely in compensated shock, masked by the effects of her beta-blocker medication.
Geriatric patients often have a blunted physiological response to trauma. Beta-blockers, like metoprolol, prevent the tachycardic response to hypovolemia. A 'normal' heart rate in this context can mask significant blood loss and compensated shock. Lethargy is a key sign of hypoperfusion. Therefore, despite seemingly acceptable vital signs, this patient should be considered to be in shock until proven otherwise.
Question 2: A 28-year-old female who is 30 weeks pregnant is the restrained driver in a motor vehicle collision. Her initial vital signs are stable. An arterial blood gas (ABG) is obtained, which shows a PaCO2 of 40 mmHg. Which of the following is the correct interpretation of this finding?
- This is a normal finding and indicates adequate ventilation.
- This suggests hyperventilation due to anxiety and pain.
- This indicates impending respiratory failure. (Correct answer)
- This is consistent with metabolic acidosis.
Correct answer: This indicates impending respiratory failure.
Due to hormonal changes (progesterone), pregnant patients have an increased minute ventilation, leading to a chronic compensated respiratory alkalosis. Their normal baseline PaCO2 is typically 28-32 mmHg. A PaCO2 of 40 mmHg, which is normal for a non-pregnant patient, indicates relative hypoventilation and CO2 retention in a pregnant patient, signaling impending respiratory failure.
Question 3: A 4-year-old child weighing 18 kg is rescued from a house fire with second-degree burns over both full legs. The child is tachycardic and has a delayed capillary refill. According to ATLS principles, what is the most appropriate initial fluid bolus?
- 1000 mL of Lactated Ringer's solution.
- 360 mL of Lactated Ringer's solution. (Correct answer)
- 180 mL of packed red blood cells.
- 500 mL of 0.9% Normal Saline.
Correct answer: 360 mL of Lactated Ringer's solution.
The standard initial fluid bolus for a pediatric trauma patient in shock is 20 mL/kg of a warmed isotonic crystalloid. For an 18 kg child, this calculation is 20 mL/kg * 18 kg = 360 mL. Blood products, if needed, are typically given as a 10 mL/kg bolus after initial crystalloid resuscitation fails to improve perfusion.
Question 4: During the primary survey of a 26-year-old female who is 24 weeks pregnant and immobilized on a backboard, she suddenly becomes hypotensive and lightheaded. Which of the following is the most critical immediate intervention?
- Administer a 2-liter bolus of warm crystalloid.
- Prepare for an emergency cesarean section.
- Obtain a STAT chest x-ray to rule out tension pneumothorax.
- Manually displace the uterus to the left side. (Correct answer)
Correct answer: Manually displace the uterus to the left side.
After 20 weeks of gestation, the gravid uterus can compress the inferior vena cava when the patient is in the supine position, leading to decreased venous return and subsequent hypotension (supine hypotensive syndrome). The most important immediate 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 5: An 8-year-old boy falls off his bicycle, striking the handlebars with his abdomen. He initially complains of mild pain but is now pale and tachycardic. A FAST exam is positive for fluid in the splenorenal space. Which organ is most likely injured?
- Duodenum
- Pancreas
- Bladder
- Spleen (Correct answer)
Correct answer: Spleen
In pediatric blunt abdominal trauma, solid organs are more frequently injured than in adults due to a more compliant rib cage, less protective abdominal musculature, and proportionally larger organs. The spleen is the most commonly injured organ in this setting, followed by the liver. Handlebar injuries are a classic mechanism for both splenic and pancreatic injuries, but the positive FAST exam points strongly toward a solid organ laceration with hemoperitoneum.
Question 6: In managing a morbidly obese trauma patient, the provider should anticipate that which of the following procedures is likely to be more difficult compared to a non-obese patient?
- Obtaining peripheral intravenous access.
- Assessing for JVD.
- Performing a FAST exam.
- All of the above. (Correct answer)
Correct answer: All of the above.
Obesity presents numerous challenges in trauma care. Excess adipose tissue can obscure anatomical landmarks, making procedures like obtaining IV access, assessing for jugular venous distention, and performing diagnostic imaging (like FAST or chest x-ray) significantly more difficult. Airway management, including intubation and cricothyrotomy, is also notoriously more challenging. Therefore, all the listed procedures are likely to be more difficult.
ATLS - Advanced Trauma Life Support Trauma in Special Populations Questions and Answers 1
An 82-year-old female is brought to the trauma center after a ground-level fall.
She is on warfarin for atrial fibrillation and metoprolol for hypertension.
Her blood pressure is 110/70 mmHg, heart rate is 80 bpm, and she is lethargic.
What is the most appropriate interpretation of her vital signs?