<prompt> Answer this question truthfullyWhat is the formula for calculating cerebral perfusion pressure CPP?  <response>: <reason> Cerebral perfusion pressure CPP is an important measure of brain function and is calculated as the difference between mean arterial pressure MAP and intracranial pressure ICP. CPP MAP - ICP. This formula takes into account the pressure gradient that drives blood flow to the brain and the pressure inside the skull. It is important to monitor CPP in patients with brain injuries or other conditions that can affect brain function, as changes in CPP can lead to ischemia lack of oxygen and damage to brain tissue. 