AAST Bladder Injury Scale AAST Bowel Injury Scale AAST Cardiac Injury Scale AAST Diaphragm Injury Scale AAST Hepatic Injury Scale AAST Kidney Injury Scale AAST Lung Injury Scale AAST Pancreatic Injury Scale AAST Rectal Injury Scale AAST Splenic Injury Scale AAST Vascular Injury Scale ABC Score (Massive Transfusion)ACS COT Field Triage Guidelines ATLS Hemorrhagic Shock Classification Abbreviated Injury Scale (AIS)Ankle-Brachial Index (ABI) in Trauma Base Deficit in Trauma Brain Injury Guidelines (BIG) Score Cardiac Wound Index Chest Trauma Score (CTS)Damage Control Decision Score (DCDS)Denver Criteria (BCVI)Esophageal Perforation Severity Score (PSS)Expanded Denver Criteria (BCVI)Flint Colon Injury Scale Frailty Index in Trauma (mFI-5)Geriatric Trauma Outcome Score (GTOS)Hard Signs of Vascular Injury Checklist Hemorrhage Control Decision Aid (Wound Packing vs. Tourniquet)ICP-based Cerebral Perfusion Pressure (CPP) Calculator Injury Severity Score (ISS)Injury Severity Score — Age-adjusted (ISS-Age)Lethal Triad / Trauma Triad of Death Calculator Limb Salvage Index (LSI)Mangled Extremity Severity Score (MESS)Mechanism, Glasgow Coma Scale, Age, and Arterial Pressure (MGAP)Memphis Criteria (BCVI)Modified Shock Index (MSI)Nerve Injury, Ischemia, Soft-tissue, Skeletal Injury, Shock, Age (NISSSA)New Injury Severity Score (NISS)Open Abdomen Classification (Björck)Pediatric Trauma Score (PTS)Pelvic Trauma Hemorrhage Risk Score Penetrating Abdominal Trauma Index (PATI)Physiologic Extreme Emergency in Trauma (FEET)Predictive Salvage Index (PSI)REBOA Zone Selection Guide Resuscitative Thoracotomy Indications (EAST/WTA Guidelines)Revised Trauma Score (RTS)RibScore Shock Index (SI)TASH Score TRISS Index Thoracic Trauma Severity Score (TTS)Tile Classification of Pelvic Fractures Trauma and Injury Severity Score — Pediatric (PTS)Young–Burgess Pelvic Fracture Classification

ICP-based Cerebral Perfusion Pressure (CPP) Calculator

Neuro-Critical Care

Input Parameters

Mean Arterial Pressure (MAP)mmHg

Intracranial Pressure (ICP)mmHg

Awaiting Data

Enter the patient's MAP and ICP to calculate the cerebral perfusion pressure.

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

When to Use CPP Monitoring

Severe traumatic brain injury (TBI) with GCS ≤ 8

Patients with invasive intracranial pressure (ICP) monitoring in ICU

Diffuse cerebral edema or intracranial hemorrhage

Post-neurosurgical patients requiring neurocritical care

Suspected raised intracranial pressure (ICP)

Hemodynamically unstable TBI requiring vasopressor support

Clinical Role in Neurotrauma

Parameter	Physiologic Role	Clinical Importance
ICP	Intracranial pressure	Reflects brain swelling / mass effect
MAP	Systemic perfusion pressure	Driving force for cerebral blood flow
CPP	Net cerebral perfusion	Key determinant of brain oxygen delivery

Limitations

Requires invasive ICP monitoring (external ventricular drain or intraparenchymal probe)

Does not directly measure cerebral oxygenation

Affected by systemic hypotension and vasopressor use

Autoregulation may be impaired in severe TBI

Single value may be misleading without trends

Last Comprehensive Review: 2026