The correct answer is D. Brainstem herniation.
This question is testing recognition of Cushing’s triad, a classic sign of increased intracranial pressure (ICP) and impending brainstem herniation.
Key findings in the question:
These three together form Cushing’s triad, which strongly indicates increased ICP and brain herniation.
Additionally:
Non-purposeful extension of extremities (decerebrate posturing) is a sign of severe brain injury and brainstem involvement.
Why D is correct:
Brainstem herniation results from severe increased ICP.
It produces Cushing’s triad and abnormal posturing.
This is a life-threatening neurological emergency requiring rapid recognition.
Why the other options are incorrect:
A. Distributive shock: Typically presents with hypotension, not hypertension.
B. Spinal cord injury: May cause paralysis but does not cause Cushing’s triad.
C. Hemorrhagic shock: Presents with hypotension and tachycardia, not bradycardia and hypertension.
Exact Extract (EMT-aligned educational content):
Cushing’s triad consists of widening pulse pressure (hypertension), bradycardia, and irregular respirations, indicating increased intracranial pressure.
Severe head injury may present with abnormal posturing (decerebrate or decorticate).
These findings suggest impending brain herniation, a critical and often fatal condition without rapid intervention.
[References:, NREMT National EMS Education Standards – Trauma (Head Injury & Increased Intracranial Pressure) , EMT Training Curriculum – Neurological Emergencies and Traumatic Brain Injury , National EMS Scope of Practice Model – Recognition of Life-Threatening Head Injuries , ======================================, , , , ]
