Relationship between Diastolic BP and Peripheral Arterial Resistence? - USMLE Forums
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Old 09-07-2010
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Heart Relationship between Diastolic BP and Peripheral Arterial Resistence?

Since diastolic BP is inversely related to total peripheral resistance, so why it is that dilation of the arterioles would decrease diastolic pressure knowing fully well the relationship of the 2! wouldn't TPR decrease because of dilation of the arterioles? so that means that the diastolic pressure should increase right? so why is it that there is a decrease in diastolic pressure when there is dilation of the arterioles?

Or do i just the concept wrong in thinking diastolic bp is inversely related to TPR
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Old 09-08-2010
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Info They are directly related

Blood pressure whether systolic or diastolic is NOT inversely related to total peripheral resistance, it's directly related.
Increased TPR causes high blood pressure and decreased TPR causes low blood pressure.

MAP = CO X TPR
MAP = 2/3 Diastolic + 1/3 Systolic
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anoop_1198 (09-10-2010), Dr_Kal_El (09-08-2010)
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Old 09-08-2010
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ok, so then it does make sense, dec tpr = dec diastolic pressure when the arterioles dilate.....thanks a bunch
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