Right and Left Atrial Pressures in Successive Stages of Oligemic and Normovolemic Shock. ∗

Abstract

Summary and Conclusions

1. Simultaneous changes in right and left atrial pressures together with aortic pressure pulses were successfully recorded through the experiments in 6 out of 16 dogs which were submitted to standardized procedures of bleeding and reinfusion developed in this laboratory. 2. An analysis of the results supports previous observations from this laboratory that myocardial depression can supervene during the circulatory failure which develops after prolonged hemorrhagic hypotension and subsequent reinfusion of the withdrawn blood. It extends these observations in showing that such myocardial failure may affect either the left or right ventricle dominantly.