Exercise-induced repolarization changes in patients with isolated myocardial bridging

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dc.contributor.authorAksan, Gökhan
dc.contributor.authorNar, Gökay
dc.contributor.authorİnci, Sinan
dc.contributor.authorYanık, Ahmet
dc.contributor.authorKılıçkesmez, Kadriye Orta
dc.contributor.authorAksoy, Olcay
dc.contributor.authorSoylu, Korhan
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-16T08:22:04Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-16T08:22:04Z
dc.date.issued2015
dc.departmentTıp Fakültesi
dc.descriptionPubMed ID: 26198682
dc.description.abstractBackground: Although myocardial bridging (MB) is defined as an angiographic phenomenon with a benign course, it has also been associated with adverse cardiovascular events. The effects of exercise on myocardial repolarization in patients with MB were tested in this study, with Tp-e and Tp-e/QT repolarization indexes. Material/Methods: A total of 50 patients in whom isolated MB was diagnosed at coronary angiography (CAG) (Group I) and 48 patients with normal CAG results (Group II) were included in this study. The participants underwent treadmill exercise stress testing according to the Bruce protocol. QT dispersion (QTd) was defined as the minimum QT interval subtracted from the maximum. The Tp-e interval was defined as the difference between the QT and the QT peak time period. QTd and Tp-e intervals were calculated for all patients before and after exercise testing and differences between groups were compared. Results: At peak exercise, QTd and cQTd showed a significant increase in comparison to baseline values in the group of patients with myocardial bridges. Significant increases were also found with exercise in the Tp-e, cTp-e durations and Tp-e/QT ratio of the MB patient group in comparison to the baseline values. On the other hand, significant differences in QTd, cQTd, Tp-e, cTp-e intervals, and Tp-e/QT ratio during peak exercise in comparison with baseline values were not detected in the control group (p>0.05). Conclusions: Significant increases in QTd, cQTd, Tp-e and cTp-e intervals and Tp-e/QT ratio were detected in the MB patients during exercise testing.
dc.identifier.doi10.12659/MSM.893632
dc.identifier.endpage2124en_US
dc.identifier.issn1234-1010
dc.identifier.scopusqualityQ1
dc.identifier.startpage2116en_US
dc.identifier.urihttps://dx.doi.org/10.12659/MSM.893632
dc.identifier.urihttps://hdl.handle.net/20.500.12451/2456
dc.identifier.volume21en_US
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherInternational Scientific Literature
dc.relation.ispartofMedical Science Monitor
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectArrhythmias
dc.subjectCardiac
dc.subjectExercise Test
dc.subjectMyocardial Bridging
dc.titleExercise-induced repolarization changes in patients with isolated myocardial bridging
dc.typeArticle

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