All questions
Question 1
Uncontrolled hemorrhage; SBP 72; no head injury; no blood products. Best fluid strategy?
- Bolus to SBP 110
- Titrate to SBP 90 (correct answer)
- Start vasopressors
- Withhold IV fluids
Explanation: In uncontrolled hemorrhage without head injury, use permissive hypotension: titrate IV fluids to keep SBP around 90. A bolus to SBP 110 is the tempting error because it raises hydrostatic pressure, dislodges clots, and worsens bleeding. Vasopressors don't replace lost volume, and withholding fluids at SBP 72 allows dangerous hypoperfusion.
Question 2
Arterial thigh bleed; tourniquet applied 15 min ago; bleeding stopped. Severe pain. What action?
- Leave in place; do not loosen (correct answer)
- Loosen briefly, then reapply
- Remove and pack the wound
- Apply a second tourniquet
Explanation: The tourniquet is controlling a life-threatening arterial bleed, and severe pain from ischemia does not mean it is failing. Once applied, leave it in place until definitive care because loosening can restart severe bleeding and worsen shock. Loosening briefly to relieve pain is tempting but risks fatal blood loss.
Question 3
Which finding best distinguishes Class III from Class II hemorrhage?
- Heart rate above 100
- Systolic BP below 90 (correct answer)
- Anxiety and pallor
- Capillary refill delay
Explanation: Class II hemorrhage maintains a normal systolic BP despite tachycardia, while the drop to systolic BP below 90 marks the transition to Class III. Tachycardia, anxiety, pallor, and delayed capillary refill can all appear in Class II, so they do not distinguish it from Class III.
Question 4
Groin junctional hemorrhage; direct pressure fails. What next?
- Elevate and cool the wound
- Place a proximal tourniquet
- Apply a pelvic binder now
- Hemostatic dressing + pressure (correct answer)
Explanation: Direct pressure failing at a junctional site like the groin means you need to pack the wound with a hemostatic dressing and continue manual pressure. A limb tourniquet is the most tempting option, but it cannot be placed proximal enough to compress the iliac or femoral vessels at this site. Purpose-built junctional tourniquets do exist and are TCCC-recommended, but none is offered here. A pelvic binder addresses pelvic fractures, not an open groin wound.
Question 5
Suspected pelvic fracture after crush. Where should the pelvic binder sit?
- Directly over the iliac crests
- Directly over the umbilicus
- Across the greater trochanters (correct answer)
- Just below the costal margin
Explanation: Place the binder across the greater trochanters, because that is the widest part of the pelvic ring and compressing there reduces pelvic volume and stabilizes a suspected fracture. Directly over the iliac crests is the tempting error: that position is too high to compress the pelvic ring effectively and the binder can slip.
Question 6
Highway MVC; patient on beta-blocker, HR 92, BP 84/52, pale and confused. What indicates decompensation?
- Normal heart rate with hypotension and confusion (correct answer)
- Tachycardia with warm dry skin
- Hypertension with anxiety and tremor
- Bradycardia with bounding pulses
Explanation: This question tests paramedic-level skills in hemorrhage control and management of traumatic shock. Hemorrhage control and shock management require quick identification of life-threatening bleeding and effective intervention, considering medication effects on vital signs. In this scenario, the beta-blocker masks tachycardia, but hypotension and confusion persist, signaling severe shock. Choice A is correct because a normal heart rate with hypotension and confusion indicates decompensation in medicated patients. Choice B is incorrect because tachycardia with warm dry skin suggests compensated or distributive shock, not decompensation here. Teaching strategies include pharmacology-integrated shock simulations. Encourage paramedics to consider drug histories in vital sign interpretation.
Question 7
MVC; heavy bleeding from extremity, direct pressure ineffective. Which intervention is most critical?
- Apply tourniquet 5–7 cm proximal to bleeding site (correct answer)
- Apply cold pack and elevate extremity
- Start fluids first, then address bleeding
- Apply tourniquet loosely to preserve pulse
Explanation: This question tests paramedic-level skills in hemorrhage control and management of traumatic shock. Hemorrhage control and shock management require quick identification of life-threatening bleeding and effective intervention, escalating when pressure fails. In this scenario, heavy extremity bleeding in an MVC unresponsive to pressure needs advanced control. Choice A is correct because applying a tourniquet 5–7 cm proximal to the site is the most critical intervention. Choice D is incorrect because applying loosely preserves pulse but not bleeding control, illustrating improper technique. Teaching strategies include tourniquet placement labs. Encourage paramedics to practice under time pressure.
Question 8
MVC with unstable vehicle and fuel odor; patient bleeding and hypotensive. What is the immediate priority?
- Start IV fluids while standing in hazard zone
- Full head-to-toe exam before moving patient
- Obtain 12-lead ECG prior to extrication
- Rapid scene safety and patient extrication coordination (correct answer)
Explanation: This question tests paramedic-level skills in hemorrhage control and management of traumatic shock. Hemorrhage control and shock management require quick identification of life-threatening bleeding and effective intervention, starting with scene safety in unstable environments. In this scenario, the MVC with fuel odor and an unstable vehicle demands prioritizing safety before patient care. Choice D is correct because rapid scene safety and patient extrication coordination is the immediate priority to protect both patient and responders. Choice B is incorrect because a full head-to-toe exam before moving risks further hazard exposure, highlighting the need for abbreviated assessments. Teaching strategies include multi-agency extrication drills. Encourage paramedics to integrate safety checks into every trauma response protocol.
Question 9
Highway pileup; tourniquet applied. Best method to assess tourniquet effectiveness on scene?
- Confirm distal pulse is present
- Assess bleeding has stopped and dressing stays dry (correct answer)
- Loosen every 10 minutes to check
- Check capillary refill only
Explanation: This question tests paramedic-level skills in hemorrhage control and management of traumatic shock. Hemorrhage control and shock management require quick identification of life-threatening bleeding and effective intervention, with ongoing assessment of tools like tourniquets. In this scenario, after tourniquet application in a highway pileup, effectiveness must be confirmed to ensure bleeding is controlled. Choice B is correct because assessing that bleeding has stopped and the dressing stays dry is the best method to verify tourniquet effectiveness on scene. Choice C is incorrect because loosening every 10 minutes risks re-bleeding, demonstrating a misconception about tourniquet management. Teaching strategies include role-playing scenarios with tourniquet evaluations. Encourage paramedics to document application time and reassess frequently during transport.
Question 10
You are treating a patient with a gunshot wound to the left upper quadrant of the abdomen. The patient rapidly develops signs of decompensated shock, including a BP of 70/palpation, a heart rate of 150, and pale, mottled skin.
An injury to which of the following solid organs is most likely responsible for this patient's rapid exsanguination?
- The stomach.
- The spleen. (correct answer)
- The small intestine.
- The pancreas.
Explanation: The correct answer is B. The spleen is a highly vascular, solid organ located in the left upper quadrant. It is prone to severe hemorrhage when injured. The stomach (A) and small intestine (C) are hollow organs, and while they can bleed, they are more associated with peritonitis and are less likely to cause such rapid exsanguination. The pancreas (D) is retroperitoneal and less commonly injured by an anterior GSW, and its bleeding is typically less profound than a splenic fracture.
Question 11
A soldier sustains a blast injury to his lower leg, and a tourniquet is applied on the battlefield. You are now transporting the patient by air to a surgical facility. The transport time is estimated to be 3 hours. The patient is hemodynamically stable, alert, and has IV access.
Under these circumstances, when is it appropriate to consider converting the tourniquet to a pressure dressing?
- When the patient is no longer in shock and the wound can be visualized. (correct answer)
- If the tourniquet has been in place for more than 6 hours.
- Tourniquets should never be loosened or removed in the prehospital setting.
- Immediately upon assuming care to prevent permanent nerve damage.
Explanation: Tourniquet management in prolonged transport scenarios requires balancing hemorrhage control against potential complications from prolonged ischemia. The key principle is that tourniquets should only be converted to pressure dressings when it's safe to do so and when you can adequately manage any resulting bleeding.
Answer A is correct because it identifies the two critical conditions for safe tourniquet conversion: hemodynamic stability (indicating the patient can tolerate potential blood loss) and wound visualization (allowing proper assessment and pressure dressing application). When both conditions are met, you can attempt controlled conversion while closely monitoring for rebleeding.
Answer B is incorrect because the 6-hour timeframe, while often cited as a concern for tissue viability, isn't an absolute indication for tourniquet removal in the field. The decision should be based on clinical factors, not arbitrary time limits, especially when surgical intervention is imminent.
Answer C represents overcautious thinking. While tourniquets shouldn't be removed casually, there are appropriate circumstances for conversion in extended transports when bleeding can be controlled by other means and the patient is stable.
Answer D is dangerous because immediate removal without assessing hemodynamic status or ensuring adequate alternative bleeding control could lead to exsanguination. Nerve damage from tourniquets typically takes hours to become permanent, while uncontrolled hemorrhage can be fatal within minutes.
Remember: tourniquet conversion decisions prioritize immediate life threats (bleeding) over potential complications (ischemia). Only attempt conversion when you're confident you can control bleeding and the patient can tolerate blood loss.
Question 12
You are treating a 44-year-old female driver involved in a high-speed MVC. She is entrapped with obvious bilateral closed femur deformities. Her vitals are: BP 88/60 mmHg, HR 128, RR 26, GCS 14. Her pelvis is stable on assessment, and there is no evidence of a head injury. You have established IV access.
What is the primary goal of your fluid resuscitation strategy for this patient?
- Rapidly administer crystalloid boluses until her systolic blood pressure is greater than 120 mmHg.
- Administer fluids to maintain a radial pulse or a systolic blood pressure of 80-90 mmHg. (correct answer)
- Withhold all fluids until arrival at the trauma center to prevent clot disruption.
- Give a 20 mL/kg fluid bolus to restore normal blood pressure and improve tissue perfusion.
Explanation: The correct answer is B. In the absence of a suspected traumatic brain injury, the current standard of care for hemorrhagic shock is permissive hypotension. The goal is to administer just enough fluid to maintain vital organ perfusion (indicated by a radial pulse or SBP of 80-90 mmHg) without raising the pressure so high that it disrupts forming clots and worsens hemorrhage. Raising the SBP above 120 mmHg (A) is too aggressive and harmful. Withholding all fluids (C) is inappropriate for a patient in decompensated shock. A weight-based bolus (D) is a pediatric standard and less specific than titrating to a target pressure or pulse.
Question 13
A 31-year-old construction worker has a large, deep laceration in his right axilla from a piece of falling sheet metal. The wound is bleeding profusely with dark red, steady-flowing blood. Direct pressure with standard dressings is not controlling the hemorrhage.
What is the most appropriate next intervention for this junctional hemorrhage?
- Apply a commercial tourniquet as high as possible on the affected arm.
- Pack the wound tightly with hemostatic gauze and hold direct pressure. (correct answer)
- Apply a pressure dressing over the existing saturated dressings.
- Immediately request orders for tranexamic acid administration.
Explanation: The correct answer is B. The axilla is a junctional area where a standard tourniquet cannot be effectively placed to control hemorrhage. When direct pressure fails, the next step is to pack the wound, preferably with hemostatic gauze, to apply pressure directly to the source of bleeding deep within the wound. A tourniquet (A) would be ineffective for an axillary injury. Simply adding more dressings (C) will not control a significant hemorrhage. TXA (D) is an adjunct treatment but not a primary mechanical method for hemorrhage control.
Question 14
You are dispatched to a multi-vehicle collision where you find a 40-year-old male with an open tibia/fibula fracture. The wound is bleeding significantly. As you begin treatment, the patient states he takes apixaban (Eliquis) for atrial fibrillation. He is tachycardic and hypotensive.
How does the patient's use of apixaban most significantly impact your management of his hemorrhagic shock?
- It prevents the effective use of hemostatic agents, making direct pressure the only option.
- It will cause an artificially low blood pressure reading, masking the true severity of shock.
- It impairs the body's natural clotting cascade, making hemorrhage more difficult to control. (correct answer)
- It requires the immediate administration of tranexamic acid to reverse its effects.
Explanation: The correct answer is C. Apixaban is a direct oral anticoagulant (DOAC) that inhibits Factor Xa in the coagulation cascade. This pharmacologically-induced coagulopathy means the patient's ability to form a clot is significantly impaired, which will make hemorrhage from any source more severe and difficult to control with standard measures. Hemostatic agents (A) may still be effective. It does not affect blood pressure readings (B). Tranexamic acid (D) is an antifibrinolytic, not a reversal agent for apixaban; reversal requires specific agents like andexanet alfa in the hospital.
Question 15
A multi-system trauma patient from an industrial accident arrives at the trauma bay. The patient is receiving blood products, is intubated, and has a core temperature of 34.5°C (94.1°F). The paramedic notes that despite aggressive fluid resuscitation, the patient's blood pressure remains low, and blood continues to ooze from IV sites and minor abrasions.
This clinical picture is most indicative of which pathophysiological state?
- Neurogenic shock.
- The lethal triad of trauma. (correct answer)
- Disseminated intravascular coagulation.
- Septic shock with adrenal crisis.
Explanation: The correct answer is B. The patient is exhibiting the three components of the lethal triad: hypothermia (34.5°C), acidosis (implied by persistent hypotension despite resuscitation, which leads to anaerobic metabolism), and coagulopathy (oozing from IV sites). This vicious cycle is a major cause of death in severe trauma. While DIC (C) is a form of coagulopathy, the lethal triad is a more encompassing term for this specific combination in trauma. Neurogenic (A) and septic shock (D) present differently and are less likely in this acute trauma context.
Question 16
A 22-year-old male was stabbed in the right flank. On your arrival, he is found walking around, appearing anxious and agitated. His skin is pale and slightly cool. Vital signs are: BP 112/74 mmHg, HR 118, RR 22, SpO2 99% on room air.
Based on these findings, which stage of hemorrhagic shock is this patient most likely experiencing?
- Decompensated shock.
- Neurogenic shock.
- Irreversible shock.
- Compensated shock. (correct answer)
Explanation: When you encounter a trauma patient with potential internal bleeding, you need to systematically assess which stage of hemorrhagic shock they're experiencing by evaluating their compensatory mechanisms and vital signs.
This patient demonstrates classic signs of compensated shock. His body is successfully maintaining adequate perfusion through compensatory mechanisms: tachycardia (HR 118) increases cardiac output, while his blood pressure remains within normal limits (112/74 mmHg). The pale, cool skin indicates peripheral vasoconstriction as his body shunts blood to vital organs. His anxiety and agitation reflect the sympathetic nervous system's activation. Most importantly, his mental status remains intact and his SpO2 is normal, indicating adequate tissue oxygenation.
Option A (decompensated shock) is incorrect because his blood pressure hasn't dropped significantly and he maintains normal oxygen saturation. In decompensated shock, you'd see hypotension and signs of inadequate perfusion. Option B (neurogenic shock) is wrong because this results from spinal cord injury causing loss of sympathetic tone, leading to bradycardia and warm, dry skin—opposite of what you see here. Option C (irreversible shock) is incorrect because this represents end-stage shock where cellular damage is so severe that death is inevitable despite treatment, characterized by profound hypotension and organ failure.
The correct answer is D—compensated shock, where the body's mechanisms are still effectively maintaining perfusion despite blood loss.
Remember: In compensated shock, vital signs may appear relatively normal due to the body's compensatory mechanisms, but subtle signs like tachycardia, pale skin, and anxiety reveal the underlying pathophysiology.
Question 17
You have administered 1 gram of Tranexamic Acid (TXA) to a 30-year-old patient with uncontrolled internal hemorrhage following a blunt abdominal injury. The patient received the dose within one hour of the injury.
What is the primary therapeutic action of TXA in this patient?
- It directly activates platelets to accelerate the formation of a primary clot.
- It provides additional clotting factors to replace those lost from bleeding.
- It prevents the breakdown of existing blood clots by inhibiting plasminogen activation. (correct answer)
- It causes systemic vasoconstriction to reduce blood flow to the injured area.
Explanation: The correct answer is C. Tranexamic acid is an antifibrinolytic agent. It works by binding to plasminogen and preventing its conversion to plasmin, the enzyme responsible for breaking down fibrin clots (fibrinolysis). By stabilizing the clots that the body is able to form, TXA reduces ongoing hemorrhage. It does not activate platelets (A), provide clotting factors (B), or cause vasoconstriction (D). Its effect is to preserve, not create, clots.
Question 18
A 24-year-old motorcyclist has an isolated, closed, mid-shaft femur fracture after being struck by a car. The patient is tachycardic and his skin is cool and pale, but his blood pressure is still within normal limits.
What is the estimated potential volume of internal blood loss that can accumulate from this single injury?
- Up to 250 mL.
- Up to 500 mL.
- Up to 750 mL.
- Up to 1,500 mL. (correct answer)
Explanation: The correct answer is D. A closed femur fracture can result in significant internal hemorrhage into the thigh compartment. The estimated potential blood loss is typically cited as 1,000 to 1,500 mL, which is enough to cause Class II or even Class III hemorrhagic shock. This highlights the importance of recognizing the potential for severe shock even from a single, isolated long bone fracture. The other values are too low and underestimate the potential for life-threatening hemorrhage.
Question 19
A 5-year-old boy weighing 20 kg fell from a second-story window. He is lethargic with a GCS of 10, BP 80/50 mmHg, HR 150, and RR 35. His abdomen is distended and firm. You suspect internal hemorrhage.
Which finding is most indicative of decompensated shock specifically in this pediatric patient?
- The heart rate of 150 bpm.
- The respiratory rate of 35.
- The systolic blood pressure of 80 mmHg. (correct answer)
- The lethargic mental status.
Explanation: The correct answer is C. Children have robust compensatory mechanisms and can maintain their blood pressure until they have lost a significant percentage of their blood volume. Tachycardia (A), tachypnea (B), and altered mental status (D) are all signs of compensated shock. Hypotension is a late and ominous sign in pediatric trauma, indicating the transition from compensated to decompensated shock and impending cardiovascular collapse. For a 5-year-old, a systolic BP of 80 mmHg is hypotensive (lower limit of normal SBP is 70 + [2 x age] = 70 + 10 = 80).
Question 20
A patient with a traumatic amputation of the leg has a tourniquet in place. You are initiating a fluid bolus for permissive hypotension. Which of the following is the most appropriate endpoint for initial fluid resuscitation in a patient with a suspected concurrent severe traumatic brain injury (TBI)?
Which of the following is the most appropriate endpoint for initial fluid resuscitation in a patient with a suspected concurrent severe traumatic brain injury (TBI)?
- A systolic blood pressure of 80-90 mmHg.
- The return of a palpable radial pulse.
- A mean arterial pressure of 65 mmHg.
- A systolic blood pressure of at least 110 mmHg. (correct answer)
Explanation: When treating trauma patients, you must balance two competing priorities: controlling bleeding through permissive hypotension versus maintaining adequate cerebral perfusion pressure when traumatic brain injury (TBI) is suspected. This question tests your understanding of how concurrent TBI changes standard hypotensive resuscitation protocols.
In isolated trauma with controlled bleeding, permissive hypotension (keeping systolic BP around 80-90 mmHg) prevents clot disruption and reduces ongoing hemorrhage. However, TBI fundamentally changes this approach because the injured brain has impaired autoregulation and requires higher perfusion pressures to prevent secondary brain injury from hypoxia and ischemia.
Answer D is correct because patients with suspected severe TBI need a systolic blood pressure of at least 110 mmHg to maintain adequate cerebral perfusion pressure. Current guidelines specifically recommend this higher target when TBI is concurrent with other trauma.
Answer A (80-90 mmHg systolic) represents standard permissive hypotension for isolated trauma, but this pressure is insufficient for brain-injured patients and risks secondary neurological damage. Answer B (palpable radial pulse) is too vague and doesn't ensure adequate cerebral perfusion—radial pulses typically return around 80 mmHg systolic. Answer C (MAP of 65 mmHg) meets general perfusion goals but doesn't account for the elevated intracranial pressure often present in severe TBI, which requires higher systemic pressures to maintain cerebral perfusion.
Remember: TBI always trumps permissive hypotension protocols. When you suspect brain injury in trauma patients, shift your resuscitation target to maintain cerebral perfusion, even at the cost of slightly increased bleeding risk.