Document Detail


Reaction of patients with effort angina to cold exposure during exercise.
MedLine Citation:
PMID:  1365214     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
An attempt has been made to characterize so-called "responders" to cold among patients with effort angina. Forty-nine such patients, unselected with regard to their history of reactions to cold, who showed ST depressions during and after exercise, were examined. They worked on a bicycle ergometer close to their maximum capacity, Wmax, at room temperature (about 23 degrees C) and in a cold room (-15 degrees C). ECG was recorded and a rating scale was used to estimate the perceived exertion during exercise (RPE). The presence of angina pectoris during exercise and its duration after exercise was recorded by an EA score. An EA/W index was used to estimate the severity of the effort angina. In the whole group, the mean Wmax decreased and the mean ST depressions, RPE, and EA/W index (but not EA score) increased on exposure to cold. The changes in these variables due to exposure to cold were all associated (but not the EA score). Criteria requiring a decrease in Wmax or increase in ST depression, RPE or EA/W index on cold exposure identified 53 to 63 percent of the patients. By combining the criteria, the number of patients, who were identified, decreased. If all the criteria were applied, about 30 percent of the patients were identified as "responders" to cold and they showed the most marked responses. Thus several exercise ECG test parameters may be used to reliably define "responders" to cold exposure. This may enhance future studies of the response reaction.
Authors:
C Backman; H Linderholm
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Arctic medical research     Volume:  Suppl     ISSN:  0782-226X     ISO Abbreviation:  Arctic Med Res     Publication Date:  1991  
Date Detail:
Created Date:  1995-01-24     Completed Date:  1995-01-24     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8602204     Medline TA:  Arctic Med Res     Country:  FINLAND    
Other Details:
Languages:  eng     Pagination:  526-8     Citation Subset:  IM    
Affiliation:
Department of Clinical Physiology, University of Umeå, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Adult
Angina Pectoris / physiopathology*
Cold Temperature*
Electrocardiography
Exercise Test*
Humans
Middle Aged

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