Key result
Rising venous pressure elevates zero-flow arterial pressure, which also varies with hematocrit and vasomotor tone.
p-value: p=<0.005
Systemic zero-flow arterial pressure is influenced by venous pressure, hematocrit, and vasomotor tone, challenging the vascular waterfall model.
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Challenges vascular waterfall model in dogs; leaves open applicability to human hemodynamics or clinical zero-flow estimates.
Brunner et al. (1983) studied this question. Changes in venous pressure, hematocrit, and vasomotor tone vs. Baseline conditions (venous pressure 0 mmHg) was evaluated on Zero-flow arterial pressure (p=<0.005). Zero-flow arterial pressure was significantly higher when venous pressure was allowed to rise (P<0.005) and was affected by changes in hematocrit and vasomotor tone.
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