Cardiac arrhythmias during exercise-induced myocardial ischaemia in patients with coronary artery disease

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Deutscher übersetzter Titel:Auftreten von Herzrhythmusstoerungen unter belastungsbedingter Myokardischaemie bei Koronarpatienten
Autor:Speccia, G.; La Rovere, M.T.; Falcone, C.; Campana, C.; Traversi, E.; Caizzi, V.; De Servi, S.
Erschienen in:European heart journal
Veröffentlicht:7 (1986), Suppl. A, S. 45-52, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource
Sprache:Englisch
ISSN:0195-668X, 1522-9645
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Erfassungsnummer:PU198807008432
Quelle:BISp

Abstract

The incidence of VA during exercise-induced myocardial ischaemia was investigated in patients with suspected CAD or those undergoing a stress exercise test after a previous myocardial infarction (MI). Patients were divided in four groups. Group A, 836 patients without a previous MI showing exercise-induced myocardial ischaemia associated with ST-segment depression. Group B, 72 patients without a previous MI and exercise-induced ST-segment elevation. Group C, 50 patients survivors of a recent (I month) MI and exercise-induced ST-segment depression. Group D, 580 patients with an old MI (>3 months) and a positive exercise test associated with ST-segment depression. Exercise-induced VA were found to be significantly more frequent in patients of groups C (40.0) and B (23.6) as compared with groups A (5.1) and D (7.06). Furthermore VA in groups B and C were more frequently complex. In all groups the appearance of VA during exercise-induced myocardial ischaemia did not appear to be related to exercise duration, maximal heart rate, maximal work capacity, left ventricular end diastolic pressure, ejection fraction or extent of coronary artery lesions. Therefore greater electrical instability after a recent MI and/or severe exercise-induced myocardial ischaemia seems to be associated with a major risk of developing VA during a positive exercise test. Verf.-Referat