Exercise-induced changes in QT interval duration and dispersion in patients with isolated myocardial bridging

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dc.authoridgüllü, hakan/0000-0003-2579-9755
dc.authorwosidKutlusoy, Ergun/ABB-9017-2020
dc.authorwosidgüllü, hakan/IXD-5147-2023
dc.contributor.authorBarutcu, I
dc.contributor.authorSezgin, AT
dc.contributor.authorGullu, H
dc.contributor.authorTopal, E
dc.contributor.authorAcikgoz, N
dc.contributor.authorOzdemir, R
dc.date.accessioned2024-08-04T20:14:43Z
dc.date.available2024-08-04T20:14:43Z
dc.date.issued2004
dc.departmentİnönü Üniversitesien_US
dc.description.abstractBackground: Isolated myocardial bridging (NIB) often is considered to be an unimportant angiographic finding; however, its association with cardiovascular event has been shown. In this study we aimed to assess exercise-induced electrocardiographic (ECG) changes and susceptibility to arrhythmia in patients with MB. Method: 21 consecutive patients who had angiographically proven MB (group 1) and 25 subjects (group 11) who had normal coronary arteries underwent exercise test using Bruce protocol. Before and after the exercise test the changes in QT interval duration and dispersion were compared. Results: Baseline characteristics of both groups were similar. Heart rate significantly increased after exercise test in both groups. In group 1, after exercise mean QT(max) and QT(min) durations did not change significantly compared to baseline values, respectively. (QT(max): 411 +/- 20 vs. 421 +/- 18 ms, p > 0.05 and QT(min) : 380 +/- 12 vs. 378 +/- 10 ms, p>0.05). However, following exercise test QT dispersion (QT(d)) and corrected QT dispersion (QT(cd)) significantly increased when compared to baseline values, respectively. (34 +/- 13 vs. 66 +/- 14 ms, p<0.05 and 37 +/- 14 vs. 69 +/- 17 ms, p<0.05) On the other hand, in control group QT(max) and QT(min) durations, QT(c) and QT(cd) did not change significantly compared to baseline values, respectively. (QT(max): 408 +/- 18 vs. 412 +/- 17 ms, p>0.05 and QT(min) : 390 +/- 11 vs. 387 +/- 10 ms, p>0.05; QT(d): 25 +/- 14 vs. 31 +/- 16 ms, p>0.05; QT(cd): 27 +/- 15 vs. 33 +/- 17 ms, p>0.05). Conclusion: Treadmill exercise test significantly increased QT dispersion in patients with MB. This increase may result from exercise-induced ischemia at the area perfused by bridged artery. (C) 2004 Elsevier Ireland Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.ijcard.2003.03.009
dc.identifier.endpage180en_US
dc.identifier.issn0167-5273
dc.identifier.issn1874-1754
dc.identifier.issue2-3en_US
dc.identifier.pmid15093977en_US
dc.identifier.scopus2-s2.0-1842850660en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage177en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijcard.2003.03.009
dc.identifier.urihttps://hdl.handle.net/11616/93919
dc.identifier.volume94en_US
dc.identifier.wosWOS:000221168800007en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherElsevier Ireland Ltden_US
dc.relation.ispartofInternational Journal of Cardiologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectisolated myocardial bridgingen_US
dc.subjectQT dispersion and arrhythmiaen_US
dc.titleExercise-induced changes in QT interval duration and dispersion in patients with isolated myocardial bridgingen_US
dc.typeArticleen_US

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