Document Detail


Exercise test in variant form of angina pectoris. Comparison of the results with spontaneous attacks.
MedLine Citation:
PMID:  6854952     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Exercise tests were performed in 14 patients with untreated variant angina with frequent spontaneous attacks and in 15 patients after treatment abolished the attacks. (1) Anginal attacks associated with ST elevation were induced by exercise in 79% of untreated patients. By contrast, ST elevation was not observed in treated patients and ST depression was induced in 53% of the cases. (2) Exercise-induced ST elevation in untreated patients was shown in the same leads as the spontaneous attacks. (3) Exercise-induced ST elevation appeared initially during the recovery phase after exercise in 36% of untreated patients. Exercise-induced ST depression appeared during or immediately after exercise. (4) The reproducibility of exercise-induced ST elevation was low with repeated tests at different stages, but exercise-induced ST depression was consistently observed. (5) The exercise-induced ST depression and lack of ST changes in treated patients were highly suggestive of the presence and absence of organic coronary artery disease, respectively. However, the exercise-induced ST elevation in untreated patients did not differentiate between the presence or absence of organic stenosis of the coronary arteries. The results of exercise tests vary with the stage of variant angina. It is suggested that a coronary arterial spasm is a trigger mechanism for exercise-induced angina in cases of variant angina with frequent spontaneous attacks.
Authors:
M Murayama; K Kawakubo; T Kawahara; M Ohshiro; I Uchiyama; S Mashima; S Murao
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Japanese heart journal     Volume:  24     ISSN:  0021-4868     ISO Abbreviation:  Jpn Heart J     Publication Date:  1983 Jan 
Date Detail:
Created Date:  1983-07-29     Completed Date:  1983-07-29     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0401175     Medline TA:  Jpn Heart J     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  21-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Angina Pectoris, Variant / diagnosis*,  etiology
Coronary Vasospasm / complications,  diagnosis*
Electrocardiography
Exercise Test*
Female
Humans
Male
Middle Aged

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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