FURTHER EVIDENCE THAT INSPIRATION INCREASES RIGHT ATRIAL INFLOW
- 1 August 1950
- journal article
- research article
- Published by American Physiological Society in American Journal of Physiology-Legacy Content
- Vol. 162 (2) , 259-265
- https://doi.org/10.1152/ajplegacy.1950.162.2.259
Abstract
Analysis of phasic changes of effective right atrial pressure provides indirect evidence that right atrial inflow increases during inspiration. The magnitude of change of effective atrial pressure gradient during the ventricular systole is due to the volume of inflow since there is no atrial outflow during this period and the volume-elasticity factor is negligible. On the first beat occurring after the onset of inspiration the magnitude of the pressure gradient existing during ventricular systole increases. The increase is not due to changes in pulmonary resistance nor to hydrostatic effect.Keywords
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