Question

A client with a head injury is being monitored for increased intracranial pressure (ICP). His blood pressure is 90/60 mm Hg and the ICP is 18 mm Hg; therefore his cerebral perfusion pressure (CPP) is:

Answer 1

52mmHg

Step-by-step explanation:

You'll need to use the following equation:

CPP = MAP - ICP

CPP is the difference between mean arterial pressure (MAP) and ICP. Your brain is perfused by some MAP, which is partially counteracted by the ICP:

MAP = 1/3 systolic BP + 2/3 diastolic BP

MAP = 1/3 (90) + 2/3 (60)

MAP = 30 + 40

MAP = 70

CPP = MAP - ICP

CPP = 70 - 18

CPP = 52