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Question of the Day
A 22-year-old man sustained multiple head and chest injuries in a motor vehicle accident. He is found unresponsive, with an arterial blood pressure of 140/80 mmHg, ventricular rate of 50 bpm, CVP 10 mmHg, PA pressures 30/14 mmHg, and PA wedge pressure 12 mmHg. ICP is 18 mmHg. What is his cerebral perfusion pressure?
Explanation
CPP = MAP – ICP = (SBP+2DBP)/3 – ICP = 100-18 = 82 mmHg. In rare patients in whom CVP is higher than ICP, CPP=MAP – CVP. Keep in mind that this CVP would have to be transduced at the level of the head (typically at the tragus).
References:
Cerebral AutoregulationOA Series: December 2025
Vod
09:07
Pain Procedure Series
Interlaminar Cervical Epidural Steroid Injection: Step-by-Step Guide