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European Heart Journal 1990 11(Supplement B):139-146; doi:10.1093/eurheartj/11.suppl_B.139
Copyright © 1990 by the European Society of Cardiology.
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© 1990 The European Society of Cardiology

Early remodelling of the left ventricle in patients with myocardial infarction

P. Gaudron, C. Eilles*, G. Ertl and K. Kochsiek

Department of Medicine and Nuclear Medicine
* Julius-Maximilian-University Würzburg, F.R.G.

Correspondence: Dr Peter Gaudron, Department of Medicine, University of Würzburg, Josef-Schneider-Strasse 2, 8700 Würzburg, F.R.G.

Sequential alterations of left ventricular volumes and haemodynamics were studied in 29 patiem between 4 days and 4 weeks after myocardial infarction. Left ventricular volume was determined by single photon emission computerized tomography (SPECT), infarct size by creatine k inase (CK) analysis, angiography and thallium201 SPECT. Left ventricular volume index (ml m–2 decreased in patients with small infarcts (74·5 ± 4·9 vs 62·5 ± 3·0, P < 0·005), but increased significantly in patients with moderate (74·6 ± 4·7 vs 83·6 ± 5·0, P < 0·0001) and large (71·7 ± 4·8 vs 90·2 ± 6·5, P < 0·0001) infarctions between 4 days and 4 weeks after acute myocardial infarction. The latter groups contained almost two-thirds of our patients. This dilation occurred without significant changes in filling pressures (Swan-Ganz catheter) and resulted in significant augmentation and finally, normalization of stroke volume at 4 weeks (33·2 ± 3·3 vs 42·6 ± 2·9), despite persistently depressed ejection fraction (conventional radionuclide ventriculography). It is concluded that left ventricular dilatation postmyocardial infarction is structural (unchanged filling pressure) and compensatory (increared stroke volume) during the interval observed in this study.

Key Words: Left ventricular dilatation • cardiac performance • remodelling • myocardial infarction


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