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European Heart Journal 1983 4(8):536-546;
Copyright © 1983 by the European Society of Cardiology.
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© 1983, by the European Society of Cardiology

Intra-aortic ballon assistance without a pump

D. A. SIDERIS, J. N. NANAS, D. N. CHRYSOS and S. D. MOULOPOULOS

Department of Clinical Therapeutics, University of Athens School of Medicine Athens, Greece

Received 2 January 1981; revised 1 November 1982; .

Address for reprints. Dimirtis A. Sideris. Alexandra Maternity Hospital, Department of Clinical Therapeutics V Sofias and K Lourou Street, Athens, Greece.

Abstract

An intra-aortic compression chamber system (CCS) was utilized in 19 anaesthetized dogs and in seven patients. The CCS consisted of an intra-aortic balloon in the thoracic aorta, an external rigid wall air chamber, and a catheter connecting the other two parts. The CCS, inflated for 2–3 min to a pressure between the systolic and diastolic arterial pressures, caused changes in the following measurements (compared with those immediately before inflation, and after deflation to atmospheric pressure): a significant (P<0.001) increase in cardiac output (7.8±18.8% x S.D.), aortic compliance (12.8±29.6%), aortic resistance (20.1±32.7%), cardiac power (or minute work, + 36.7±44.6%), coronary sinus outflow (+ 23.6±43.6%) and aortic backflow (+ 28.0±36.4%); the left ventricular end-diastolic pressure did not change significantly. During a 5–90 min utilization in seven patients with cardiogenic shock, the cardiac output was increased by 4.1±42.4% (lower than when intra-aortic balloon pumping was applied).

It is concluded that the simple device described may be useful in clinical cardiogenic shock, especially when an intra-aortic balloon pump is not available or a portable device is desirable.

Key Words: Air chamber • aortic compliance • aortic impedance • compression chamber system • intra-aortic balloon pumping


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