BCCCP: Hemorrhagic Shock, Massive Transfusion, and Trauma‐Induced Coagulopathy

Question 1 of 10

1. Question

A 45-year-old male is admitted to critical care following a high-speed motor vehicle collision. He is intubated and on assist-control ventilation, receiving a norepinephrine infusion to maintain a mean arterial pressure above 65 mmHg. Despite aggressive fluid and blood resuscitation, he remains hypotensive with ongoing bleeding. Arterial blood gas shows metabolic acidosis with elevated lactate, and laboratory data reveal coagulopathy with thrombocytopenia and prolonged INR/aPTT. His core temperature is 35 °C. Which of the following statements BEST explains the complex pathophysiology contributing to his hemorrhagic shock and trauma-induced coagulopathy?

Severe hypovolemia leads to tissue hypoperfusion, anaerobic metabolism, and lactic acidosis, which, along with endothelial thrombomodulin expression activating the protein C pathway, promotes a hypocoagulable state and enhanced fibrinolysis.
The primary drivers are massive crystalloid resuscitation causing dilutional coagulopathy and hypothermia, leading to impaired platelet function and factor activity, with tissue hypoperfusion being a secondary effect.
Cellular dysfunction from widespread tissue injury triggers a systemic inflammatory response, leading to endothelial damage and subsequent consumption of clotting factors, resulting in disseminated intravascular coagulation (DIC).
The initial compensatory vasoconstriction in response to hypovolemia causes localized ischemia, leading to a hypercoagulable state that consumes clotting factors, which is then exacerbated by rapid infusion of cold blood products.

Question 2 of 10

2. Question

A 35-year-old male motorcyclist is brought to the ICU after a high-speed collision. He arrives in hemorrhagic shock with laboratory evidence of severe trauma-induced coagulopathy (TIC). His prehospital course was prolonged due to a lack of nearby trauma centers, delaying definitive hemorrhage control. Which social determinant of health MOST critically contributed to his delayed access to definitive care and subsequent severe TIC?

Remote rural residence leading to prolonged transport to a trauma center
Limited community resources resulting in reduced EMS coverage
Low health literacy delaying recognition of injury severity and bystander response
Low socioeconomic status limiting access to personal protective equipment

Question 3 of 10

3. Question

A 32-year-old male is admitted to the ICU following a high-speed motor vehicle collision with massive hemorrhage requiring multiple transfusions. Early laboratory studies reveal prolonged clotting times and evidence of increased fibrinolysis. Considering epidemiological and pathophysiological data in severe trauma, which statement BEST describes the prevalence and primary mechanism of coagulopathy in this patient’s clinical scenario?

Coagulopathy occurs in approximately 10% of severely injured trauma patients and is primarily driven by hypothermia and acidosis from rapid transfusion of cold, acidic blood products.
Coagulopathy occurs in about 25% of massively bleeding trauma patients and is driven by early shock-induced activation of the protein C pathway leading to hyperfibrinolysis.
Coagulopathy occurs in up to 50% of massively transfused trauma patients and is mainly due to dilutional loss of coagulation factors from large-volume crystalloid resuscitation.
Coagulopathy typically develops later in hemorrhagic shock (about 15% of cases) and is primarily due to depletion of coagulation factors, hypothermia, and acidosis.

Question 4 of 10

4. Question

A 58-year-old man with a history of cirrhosis secondary to chronic hepatitis C is admitted to the intensive care unit after sustaining multiple traumatic injuries in a motor vehicle accident. He is in hemorrhagic shock and requires massive transfusion with packed red blood cells, fresh frozen plasma, and platelets. Given his underlying chronic liver disease, which complication should be MOST proactively monitored and managed due to its heightened risk related to impaired citrate metabolism during massive transfusion?

Worsening hypocalcemia
Development of transfusion-related acute lung injury (TRALI)
Exacerbation of hyperkalemia
Increased risk of bacterial infection

Question 5 of 10

5. Question

A 35-year-old male trauma patient arrives intubated to the ICU after a motor vehicle collision. He is hypotensive (systolic blood pressure 80 mmHg), tachycardic (135 bpm), tachypneic (28 breaths/min), unresponsive to verbal stimuli, and has negligible urine output. A focused assessment with sonography for trauma (FAST) exam is positive for intra-abdominal bleeding, and his base deficit is –8 mEq/L. Which immediate management intervention is MOST appropriate?

Activate the massive transfusion protocol
Administer 2 L of crystalloid and reassess before giving blood products
Begin crystalloid infusion while obtaining definitive imaging
Proceed directly to emergent laparotomy for hemorrhage control without resuscitation

Question 6 of 10

6. Question

A 28-year-old man is admitted to the ICU after a high-speed motor vehicle collision. He received aggressive crystalloid resuscitation and 6 units of packed red blood cells. On arrival, his vitals stabilized, his core temperature is 36.8 °C, and arterial pH is 7.38. Labs now show prolonged PT and aPTT, thrombocytopenia, and low fibrinogen. Which of the following findings is most indicative that his coagulopathy is trauma-induced (endogenous) rather than dilutional, hypothermia-, or acidosis-related?

Core temperature of 34.5 °C with further prolongation of clotting times
Persistent oozing from intravenous catheter sites despite normothermia and normal pH
Hematocrit declining to 22% after transfusion of three additional units of RBCs
Arterial pH falling to 7.18 with rising lactate levels

Question 7 of 10

7. Question

A 45-year-old male trauma patient in the ICU continues to have diffuse bleeding despite initial resuscitation. Laboratory results show:
• INR: 2.8
• aPTT: 75 seconds
• Fibrinogen: 70 mg/dL (normal 200–400)
• Platelet count: 65 ×10^9/L (normal 150–450)
• Lactate: 8.2 mmol/L (normal <2) Thromboelastography (TEG) reveals: • R time: 18 minutes (normal 5–10) • K time: 8 minutes (normal 1–3) • Alpha angle: 35° (normal 50–70) • Maximum amplitude (MA): 38 mm (normal 50–70) • LY30: 2% (normal <8) What is the MOST appropriate immediate intervention to correct his coagulopathy?

Administer Fresh Frozen Plasma (FFP) and platelets
Administer cryoprecipitate and tranexamic acid
Administer Fresh Frozen Plasma (FFP), cryoprecipitate, and platelets
Administer recombinant factor VIIa and tranexamic acid

Question 8 of 10

8. Question

A 34-year-old, 80-kg male with severe hemorrhagic shock following a pelvic fracture is admitted to the ICU after a motor vehicle collision. On arrival, his blood pressure is 80/50 mmHg, heart rate 130 bpm, and he is intubated and receiving vasopressors. Ongoing pelvic hemorrhage persists. Laboratory studies show hemoglobin 6.5 g/dL, INR 2.5, platelets 80,000/µL, and lactate 8 mmol/L. The massive transfusion protocol is activated. Which initial transfusion strategy should the critical care pharmacist prioritize?

Packed red blood cells (PRBCs), fresh frozen plasma (FFP), and platelets in a 1:1:1 ratio.
Aggressive crystalloid resuscitation followed by PRBCs to maintain hemoglobin >7 g/dL.
Packed red blood cells (PRBCs) and fresh frozen plasma (FFP) in a 1:1 ratio, reserving platelets for counts <50,000/µL.
Packed red blood cells (PRBCs), fresh frozen plasma (FFP), and cryoprecipitate in a 1:1:1 ratio.

Question 9 of 10

9. Question

A 45-year-old, 75 kg male is admitted to the ICU after severe blunt abdominal trauma. He is intubated on assist-control ventilation and receiving a norepinephrine infusion at 0.5 mcg/kg/min to maintain a mean arterial pressure of 65 mm Hg. He is undergoing a massive transfusion protocol (1:1:1 ratio of PRBCs, plasma, platelets). Labs show pH 7.18, lactate 8.2 mmol/L, core temperature 34.5 °C, and albumin 2.1 g/dL. The team plans to initiate ceftriaxone (≈85% protein bound) for suspected severe intra-abdominal infection. Which pharmacokinetic consideration should be the primary focus when determining the initial ceftriaxone dosing strategy?

Increased volume of distribution from aggressive fluid resuscitation may necessitate a higher loading dose for hydrophilic antibiotics, but is less relevant for highly protein-bound drugs.
Decreased protein binding due to hypoalbuminemia increases the free ceftriaxone fraction, raising efficacy and toxicity risks if standard doses are used.
Hepatic hypoperfusion may reduce ceftriaxone clearance and prolong half-life, which affects maintenance dosing intervals more than initial loading doses.
Massive transfusion–related hemodilution can lower total plasma drug concentrations but has minimal impact on the free drug fraction compared with hypoalbuminemia.

Question 10 of 10

10. Question

A 35-year-old man is admitted to the ICU after a motor vehicle collision with hemorrhagic shock and trauma-induced coagulopathy requiring massive transfusion. Which transfusion strategy is most supported by current evidence to improve survival in this setting?

Early balanced transfusion using red blood cells, plasma, and platelets in a 1:1:1 ratio with immediate tranexamic acid administration
Initial red blood cell–only transfusion until conventional coagulation tests confirm coagulopathy, delaying plasma and platelet administration
Early adjunctive recombinant activated factor VII with standard red blood cell and plasma transfusion to rapidly control bleeding
Standard red blood cell, plasma, and platelet transfusion with tranexamic acid reserved for laboratory-confirmed hyperfibrinolysis