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Cerebral perfusion pressure, or CPP, is the net pressure gradient causing cerebral blood flow to the brain (brain perfusion).It must be maintained within narrow limits because too little pressure could cause brain tissue to become ischemic (having inadequate blood flow), and too much could raise intracranial pressure (ICP).
Traumatic brain injury can cause dangerously raised intracranial pressure. Pressure reactivity index or PRx is a tool for monitoring cerebral autoregulation in the intensive care setting for patients with severe traumatic brain injury or subarachnoid haemorrhage, in order to guide therapy to protect the brain from dangerously high or low cerebral blood flow.
Cerebral perfusion pressure (CPP), the pressure of blood flowing to the brain, is normally fairly constant due to autoregulation, but for abnormal mean arterial pressure (MAP) or abnormal ICP the cerebral perfusion pressure is calculated by subtracting the intracranial pressure from the mean arterial pressure: CPP = MAP − ICP .
CPP: cerebral perfusion pressure: CPPD: calcium pyrophosphate cyclic perimenstrual pain and discomfort [1] (premenstrual syndrome) CPR: cardiopulmonary resuscitation: CPT: Current Procedural Terminology: CR: complete remission (complete response) controlled release: Cr: creatinine: CRC: colorectal cancer: CrCl: creatinine clearance
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Because CPP is measured by the difference in aortic and LVEDP pressures, an increase in LVEDP will decrease CPP. The heart may compensate for this reduction in CPP by increasing contractility and subsequent aortic pressure. However, this process requires greater oxygen consumption and will promote ventricular remodeling. While this process may ...
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