// PARAMEDIC Question · Trauma
A patient with a severe head injury and a dilated pupil should be ventilated to maintain ETCO₂ at:
A. 15–20 mmHg
B. 25–30 mmHg
C. 35–45 mmHgCorrect
D. 50–60 mmHg
// Rationale
Maintain ETCO₂ around 35–45 mmHg in head injury; avoid hyperventilation-induced cerebral ischemia.