NREMT Paramedic Cognitive ExamTraumaHard
A 40-year-old male is found unresponsive after a fall from a ladder. He has a GCS of 8, unequal pupils, and decerebrate posturing. His blood pressure is 180/100 mmHg, heart rate 50 bpm, and respirations are irregular and slow. Which of the following is the most critical intervention to perform immediately after securing the airway and ventilation?
- AAdminister 1 gram of tranexamic acid (TXA) IV.
- BRapidly infusing crystalloids to a target SBP of 120 mmHg.
- CAdminister hypertonic saline or mannitol.
- DInitiate permissive hypotension with a target SBP of 90 mmHg.
Show answer & explanationAnswer & explanation
Correct answer: C. Administer hypertonic saline or mannitol.
The patient exhibits signs of severe traumatic brain injury (GCS 8, unequal pupils, decerebrate posturing) and elevated intracranial pressure (Cushing's triad: hypertension, bradycardia, irregular respirations). After securing the airway and ventilation, the most critical immediate intervention is to reduce intracranial pressure. Hypertonic saline or mannitol are osmotic diuretics that draw fluid out of the brain, rapidly decreasing ICP.
Why the other options are wrong
- A. TXA is used for significant hemorrhage to reduce fibrinolysis, not directly for elevated ICP.
- B. While maintaining blood pressure is crucial, rapidly infusing crystalloids to a target SBP of 120 mmHg might worsen cerebral edema in the absence of hypovolemic shock, and the primary issue here is ICP, not just blood pressure alone.
- D. Permissive hypotension is contraindicated in severe TBI; maintaining adequate cerebral perfusion pressure (CPP) is paramount, which requires maintaining a higher blood pressure.
ICP Management in TBI
Strategies to reduce intracranial pressure (ICP) in patients with severe traumatic brain injury, aimed at preventing secondary brain injury.
- Maintain adequate cerebral perfusion pressure (CPP).
- Avoid hypotension and hypoxia.
- Osmotic agents (mannitol, hypertonic saline) are key for acute ICP reduction.
Memory trick: ICP's Crisis: Osmotic Options Open.