Arterial Blood Flow During Elevated Intrapulmonary and Intra-Abdominal Pressures

Abstract

Summary

Anesthetized dogs were subjected to 3–21 mm Hg CPPB or AbPB. Carotid and femoral arterial blood flow and mean carotid pressure decreased inversely proportional to increasing CPPB while femoral pressure remained essentially unaltered. Thus vascular resistance was significantly elevated only in the femoral circulation. In general, since all levels of AbPB were without effect except for the slight depression in femoral flow, the data suggest that elevations in abdominal pressure which occur during CPPB do not play a significant role in the restoration of circulatory parameters.