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CCRN practice question: Musculoskeletal, Neurological, Behavioral/Psychosocial

Musculoskeletal, Neurological, Behavioral/PsychosocialDifficulty 3/5

Which set of findings suggests impending herniation in a patient with rising intracranial pressure?

  1. ACushing’s triad with a newly dilated pupil, indicating brainstem compression
  2. BHypotension, tachycardia and rapid shallow breathing with equal pupils
  3. CNormal vital signs with a gradually improving level of consciousness
  4. DFever, tachycardia and hypotension consistent with an early septic response
Show answer and rationale

Correct: A. Cushing's triad — hypertension with a widening pulse pressure, bradycardia and irregular respirations — combined with a unilateral dilated pupil indicates brainstem compression and demands immediate intervention.

  • B — That pattern suggests hypovolaemia or shock rather than herniation.
  • C — Improving consciousness is inconsistent with herniation.
  • D — Those findings describe sepsis.

Concept being tested

18% of the exam. Stroke and intracranial hemorrhage, increased intracranial pressure, seizures and status epilepticus, neuromuscular disease, brain and spinal-cord injury, musculoskeletal trauma and compartment syndrome, plus delirium, agitation, substance withdrawal and behavioural emergencies. — 18% of the exam. Study guide for Musculoskeletal, Neurological, Behavioral/Psychosocial.

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Primary references

  1. CCRN Exam Handbook — Direct Care (July 2026) — AACN Certification Corporation · primary · retrieved 2026-09-22, verified 2026-09-22
Last reviewed: 2026-10-07Reviewed by: Marcus Vance, MSN, RN, CCRN-CSC, Critical care nursing curriculum & clinical item reviewHow we verify facts