Pulse Pressure and Vessel Compliance

bronchiole said:

In my understanding, if vessel compliance is increased, diastolic BP should decrease.

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I think this is where you're backwards.

What doctorsmonters wrote is correct: a fixed stroke volume going into a vessel with decreased compliance results in a greater pulse pressure - that is to say, a greater gap between systolic and diastolic pressures. Systolic pressure goes up with decreased compliance and diastolic goes down.

hope that helps?