Document Detail

Silent myocardial ischemia during coronary angioplasty.
MedLine Citation:
PMID:  8374930     Owner:  NLM     Status:  MEDLINE    
Silent myocardial ischemia is a marker in patients with coronary artery disease identifying those at high risk for subsequent cardiac events. During provoked myocardial ischemia some patients with angina pectoris do not develop chest pain. Are there clinical, angiographic or electrocardiographic differences between patients with chest pain as compared with patients without chest pain during provoked myocardial ischemia? Coronary angioplasty is a well-established method for the treatment of coronary stenosis, but it is also an interesting model for the study of myocardial ischemia as a result of coronary occlusion. We monitored 114 patients with angina pectoris during coronary angioplasty with dynamic, computerized vectorcardiography. During inflation of the balloon 33 of 114 patients had silent ischemia. Patients with silent myocardial ischemia had similar reasons for terminating the preangioplasty exercise test and where on similar anti-ischemic drug regimes. Silent myocardial ischemia was significantly associated with a history of diabetes, presence of collaterals, a history of less severe previous angina and less ST segment changes during angioplasty as compared with patients with painful ischemia. It is suggested that during coronary angioplasty silent ischemia may be caused by a less severe degree of ischemia, possibly as a result of the protective effect of collaterals.
M Dellborg; H Emanuelsson; K Swedberg
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cardiology     Volume:  82     ISSN:  0008-6312     ISO Abbreviation:  Cardiology     Publication Date:  1993  
Date Detail:
Created Date:  1993-10-19     Completed Date:  1993-10-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  1266406     Medline TA:  Cardiology     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  325-34     Citation Subset:  IM    
Department of Medicine, Ostra Hospital, University of Göteborg, Sweden.
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MeSH Terms
Angioplasty, Transluminal, Percutaneous Coronary / adverse effects*
Exercise Test
Middle Aged
Myocardial Ischemia / etiology*,  physiopathology

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