Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

22 July 2015 : Clinical Research  

Exercise-Induced Repolarization Changes in Patients with Isolated Myocardial Bridging

Gökhan AksanABCDEF, Gökay NarACE, Sinan İnciACDEF, Ahmet YanıkAEF, Kadriye Orta KılıçkesmezAE, Olcay AksoyEF, Korhan SoyluABCDEF

DOI: 10.12659/MSM.893632

Med Sci Monit 2015; 21:2116-2124

Abstract

BACKGROUND: 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 AND 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.

Keywords: Case-Control Studies, Coronary Angiography, Electrocardiography, Exercise - physiology, Exercise Test - methods, Myocardial Bridging - physiopathology, Myocardium - pathology, Prospective Studies

0 Comments

Editorial

01 October 2022 : Editorial  

Editorial: Rebound COVID-19 and Cessation of Antiviral Treatment for SARS-CoV-2 with Paxlovid and Molnupiravir

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.938532

Med Sci Monit 2022; 28:e938532

SARS-CoV-2/COVID-19

16 September 2022 : Review article  

Effects of Physiotherapy on Rehabilitation and Quality of Life in Patients Hospitalized for COVID-19: A Rev...

Med Sci Monit In Press; DOI: 10.12659/MSM.938141  

03 October 2022 : Clinical Research  

Effect of Vitamin D Concentration on Course of COVID-19

Med Sci Monit 2022; 28:e937741

In Press

03 Oct 2022 : Clinical Research  

Evaluation of Orthodontic Mini-Implant Placement in the Maxillary Anterior Alveolar Region in 15 Patients b...

Med Sci Monit In Press; DOI: 10.12659/MSM.937949  

30 Sep 2022 : Clinical Research  

Correlation Between Trough Level of Abiraterone and Prostate-Specific Antigen (PSA) Response in Metastatic ...

Med Sci Monit In Press; DOI: 10.12659/MSM.938091  

30 Sep 2022 : Review article  

A Review of the Biological Mechanisms of Dexmedetomidine for Postoperative Neurocognitive Disorders

Med Sci Monit In Press; DOI: 10.12659/MSM.937862  

29 Sep 2022 : Animal Research  

Effect of Antilogous Platelet-Rich Plasma on the Revascularization of Rabbit Prefabricated Flap

Med Sci Monit In Press; DOI: 10.12659/MSM.937718  

Most Viewed Current Articles

30 Dec 2021 : Clinical Research  

Retrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...

DOI :10.12659/MSM.935379

Med Sci Monit 2021; 27:e935379

13 Nov 2021 : Clinical Research  

Acceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...

DOI :10.12659/MSM.932788

Med Sci Monit 2021; 27:e932788

08 Mar 2022 : Review article  

A Review of the Potential Roles of Antioxidant and Anti-Inflammatory Pharmacological Approaches for the Man...

DOI :10.12659/MSM.936292

Med Sci Monit 2022; 28:e936292

01 Nov 2020 : Review article  

Long-Term Respiratory and Neurological Sequelae of COVID-19

DOI :10.12659/MSM.928996

Med Sci Monit 2020; 26:e928996

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750