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9 Cards in this Set
- Front
- Back
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Why is the PP in the MAP expression divided by 3?
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Becuase only about 1\3 of cardiac cycle is in systole
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What are the 2 expressions for MAP that we know?
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MAP=DP+1\3PP
MAP=CO+TPR same as ∆P=QxR |
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What are 2 major determinants for Systolic pressure and pulse pressure?
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Compliance and Stroke volume
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How does increased stroke volume change pulse pressure?
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It increases it
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WHat 2 factors affect diastolic pressure?
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TPR and HR
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How is pressure difference calculated in the pulmonary system?
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Using the pulmonary artery systolic pressure and the LA wedge pressure
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WHat 2 pressures determine the pressure gradient for venous return?
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Peripheral venous pressure and RA pressure
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How does hydrostatic pressure from standing up affect venous return? How is equilibrium re-extablished?
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Decreases venous return transiently but neural signals increase MAP to supine levels
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How does skeletal muscle affect venous return?
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Muscle pump can enhance venous return
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