| Cardiac arrhythmias triggered by sudden and dynamic efforts. | |
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MedLine Citation:
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PMID: 20522056 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Some arrhythmias are triggered only during exercise. The aim of this study is to describe the frequency and type of arrhythmia induced by a standardized protocol of sudden and dynamic exercise, which tends to reflect routine situations of efforts (e.g., climbing stairs), and compare with those found on maximal cardiopulmonary exercise test (CPET). METHODS: A total of 2329 subjects (1594 men) aged 9-91 years (mean 52 years, SD +/- 16) were submitted to a standardized protocol of sudden and dynamic exercise (4-second exercise test [4sET]) prior to a CPET. A continuous digital electrocardiogram (ECG) was recorded during 4sET and CPET, and later reviewed and interpreted by the same physician (who supervised all the procedures). RESULTS: A total of 1125 subjects (43%) had cardiac arrhythmias during one or both procedures. About 57% of the arrhythmias were supraventricular, but 47 subjects (2% of all subjects) presented more complex arrhythmias including 43 cases of nonsustained supraventricular tachycardia and four nonsustained ventricular tachycardia. While arrhythmias were more often exposed by the CPET (P < 0.01), in 221 cases (10% of the total sample) of arrhythmias they were only induced by 4sET; these included four cases of nonsustained supraventricular tachycardia. CONCLUSION: 4sET-induced arrhythmias tend to be simple and were always short-lasting. In some cases, ECG recording during 4sET showed arrhythmias that would not be induced by a progressive maximal exercise test. Different situations of exercise, sudden and short versus maximal and progressive, tend to generate different arrhythmic responses and possibly complementary clinical implications. |
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Authors:
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Emanuel C Furtado; Claudio Gil S Araújo |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc Volume: 15 ISSN: 1542-474X ISO Abbreviation: Ann Noninvasive Electrocardiol Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-06-04 Completed Date: 2010-10-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9607443 Medline TA: Ann Noninvasive Electrocardiol Country: United States |
Other Details:
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Languages: eng Pagination: 151-6 Citation Subset: IM |
Affiliation:
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Gama Filho University, Rio de Janeiro, RJ, Brazil. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Analysis of Variance Arrhythmias, Cardiac / diagnosis*, etiology* Child Electrocardiography / methods, statistics & numerical data Exercise* Exercise Test / adverse effects*, methods*, statistics & numerical data Female Humans Male Middle Aged Physical Exertion* Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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