Question

To maintain autoregulation, the cerebral perfusion pressure (CPP) must be maintained above which level?

1) 150 mm Hg
2) 100 mm Hg
3) 50 mm Hg
4) 30 mm Hg

Answer 1

To maintain autoregulation, the cerebral perfusion pressure (CPP) must be maintained above approximately 60 mm Hg.

Step-by-step explanation:

The cerebral perfusion pressure (CPP) must be maintained above approximately 60 mm Hg to maintain autoregulation.

In the cardiovascular system, the mean arterial pressure (MAP) is an important indicator. MAP is calculated by adding 1/3 of the difference between the systolic and diastolic pressures to the diastolic pressure. As long as the MAP is above approximately 60 mm Hg, the pressure will be adequate to maintain glomerular filtration.

If the blood pressure falls below this level for an extended time, it can impair renal function and cause severe systemic disorders.