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European Heart Journal 1985 6(4):284-293;
Copyright © 1985 by the European Society of Cardiology.
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© 1985 The European Society of Cardiology

Haemodynamic and antiarrhythmic protective effects of intracoronary perfusion during percutaneous transluminal coronary angioplasty

F. M. MCDONALD*,, M. FUCHS{dagger}, J. KREUZER*, H. W. HÖPP{dagger}, A. HEINEN{ddagger}, G. ARNOLD§, L. HEYMANS§, Hj. HIRCHE* and V. HOMBACH{dagger}

*Lehrstuhl für Angewandte Physiologie
{dagger}Medizinische Klinik III
{ddagger}Medizinische Klinik II
§Pathologisches Institut, University of Cologne Cologne, F.R.G.

Received 20 December 1984; revised 7 February 1985; .

Dr F. M. McDonald, Lehrstuhl für Angewandte Physiologie, University of Cologne, Robert-Koch-Strasse 39, D-5000 Cologne 41, F.R.G.

Abstract

In 17 anaesthetized open-chest pigs, experiments were performed to determine if a myocardial protective effect can be obtained by intracoronary perfusion through the dilatation catheter during balloon inflation for percutaneous transluminal coronary angioplasty. Placement of the catheter such that the balloon lay in the middle third of the left anterior descending coronary artery caused a significant deterioration in haemodynamic status prior to balloon inflation, and on 5 occasions led to the development of ventricular fibrillation (VF). Balloon inflation without perfusion for periods of up to 5 min produced further haemodynamic deterioration, and culminated in VF in 4/14 cases. Simultaneous perfusion during balloon inflation (proximal perfusion pressure 900–1200 mmHg), with flow rates of 14.5±5 ml min–1 for arterial whole blood and 21±7 ml min–1 for blood diluted with 0.90% NaCl (haematocrit approx. 25%), not only prevented the haemodynamic deterioration but resulted in an improvement compared with values obtained with the catheter in position prior to balloon inflation. In no case did VF occur during 5 min of balloon inflation plus perfusion. The use of diluted blood as the perfusate was not associated with intracatheter thrombus formation, which was sometimes seen as a complication of whole blood perfusion.

Key Words: Acute myocardial ischaemia • intracoronary perfusion • haemodynamic protection • antiarrhythmic effect • pigs.


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