Document Detail

Effect of treadmill exercise testing on P wave duration and dispersion in patients with isolated myocardial bridging.
MedLine Citation:
PMID:  19214774     Owner:  NLM     Status:  MEDLINE    
Several previous studies suggest that myocardial bridging (MB) is associated with ischemia and rhythm disturbances. We sought to examine exercise-induced changes in P wave duration and dispersion (PWD), the markers of atrial conduction abnormalities in patients with isolated MB of left anterior descending artery (LAD) and control subjects. Eighteen patients with MB of LAD (group-I) and 22 subjects with angiographically demonstrated normal coronary arteries (group-II) underwent treadmill exercise testing. Before and after exercise ECG was recorded at a paper speed of 50 mm/s. The change in maximum and minimum P wave duration was measured manually and difference between two values was defined as PWD. There was no difference between two groups in terms of demographic properties. Baseline maximum and minimum P wave duration and PWD durations were similar in both groups and they did not change after exercise. (Group-I: before and after test; 114 +/- 10 vs. 114 +/- 9, 66 +/- 13 vs. 67 +/- 10, and 47 +/- 9 vs. 45 +/- 13 ms, P > 0.05, group-II; 113 +/- 9 vs. 115 +/- 8, 68 +/- 11 vs. 68 +/- 11, 45 +/- 11 vs. 48 +/- 15 ms for each, respectively). In addition there was no significant correlation between PWD and P wave duration and echocardiographic variables. In patients with MB of LAD, PWD and P wave duration were not different than healthy subjects and treadmill exercise testing did not induce atrial conduction abnormalities in both groups.
Irfan Barutcu; Ali Metin Esen; Ramazan Ozdemir; Nusret Acikgoz; Muhsin Turkmen; Cevat Kirma
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Publication Detail:
Type:  Journal Article     Date:  2009-02-12
Journal Detail:
Title:  The international journal of cardiovascular imaging     Volume:  25     ISSN:  1875-8312     ISO Abbreviation:  Int J Cardiovasc Imaging     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-05-18     Completed Date:  2009-07-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100969716     Medline TA:  Int J Cardiovasc Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  465-70     Citation Subset:  IM    
Department of Cardiology, Avicenna Hospital, Menderes mah. Atişalani Cad. 19. Sok No: 2, Istanbul, Turkey.
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MeSH Terms
Action Potentials
Arrhythmias, Cardiac / etiology*,  physiopathology
Coronary Angiography
Echocardiography, Doppler
Exercise Test*
Heart Conduction System / physiopathology*
Middle Aged
Myocardial Bridging / complications,  diagnosis,  physiopathology*
Retrospective Studies
Time Factors

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

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