INTRAAORTIC BALLOON PUMPING AND CARDIAC OXYGEN BALANCE.

O. Barnea, T. W. Moore, D. Jaron

Research output: Contribution to conferencePaperpeer-review

Abstract

A computer simulation of the cardiovascular system was used to study the interaction between the cardiovascular system and an intra-aortic balloon pump (IABP) used for in-series cardiac assistance. Since the two main objectives of in-series assistance are to augment coronary flow and to unload the left ventricle (LV), special attention was directed to changes in oxygen availability and oxygen cost to the ejecting left ventricle. Results indicate that maximal unloading, in terms of oxygen cost per beat, is obtained by balloon timing different than that required for maximizing oxygen availability. These results imply that end-diastolic pressure should not be used as a measure of unloading and that the most important factor in improving oxygen balance is the enhancement of coronary flow.

Original languageEnglish
Pages269-270
Number of pages2
StatePublished - 1987

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