Mean Arterial Pressure versus Mean Systemic Filling Pressure? - USMLE Forums
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Old 09-15-2011
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Vascular Mean Arterial Pressure versus Mean Systemic Filling Pressure?

What is the difference between mean arterial blood pressure and mean systemic pressure?

Is mean systemic pressure the pressure driving the bloodflow back to the heart to create venous return?
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Old 09-15-2011
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The mean arterial blood pressure:
It's the average of blood pressure during a cardiac cycle (systolic+diastolic/2) It's usually 70-100 mmHg.

The mean systemic filling pressure:
The pressure in the circulation when the heart stops, it's usually 5-10 mmHg. It's the pressure that drives the venous return.
It has been explained very nice by Sabio here
Cardiac Output - Venous Return Curves
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Old 09-15-2011
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Quote:
Originally Posted by Hokolesqua View Post
The mean arterial blood pressure:
It's the average of blood pressure during a cardiac cycle (systolic+diastolic/2) It's usually 70-100 mmHg.

The mean systemic filling pressure:
The pressure in the circulation when the heart stops, it's usually 5-10 mmHg. It's the pressure that drives the venous return.
It has been explained very nice by Sabio here
Cardiac Output - Venous Return Curves
Thanks for the reply but I think the MABP should be DBP + 1/3 (SBP-DBP) since diastolic time is longer
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