🧠 Cerebral Perfusion Pressure Calculator
Calculate cerebral perfusion pressure (CPP) from blood pressure and intracranial pressure using the standard clinical formula.
How CPP is calculated
Cerebral perfusion pressure represents the net pressure driving blood flow to the brain. It is calculated as: CPP = Mean Arterial Pressure (MAP) – Intracranial Pressure (ICP). Mean arterial pressure is itself calculated from blood pressure using MAP = Diastolic + (Systolic – Diastolic) / 3.
Why it matters
In clinical settings, a CPP target of roughly 60-70 mmHg is commonly used as a guide for adequate brain perfusion, though exact targets vary by patient, condition, and treating clinician’s protocol. Values that are too low can risk inadequate blood flow to brain tissue, while values that are too high can worsen brain swelling in some conditions.
This calculator is for general physiology education and reference only. It is not intended for clinical decision-making; ICP and CPP management should always be directed by qualified medical professionals using continuous monitoring and the full clinical context.