QT Interval Variability in Patients with Obstructive Sleep Apnea
Mohammad Hashemi Jazi, Babak Amra, Khadijeh Miadi, Mansour Jahangiri, Ali Gholamrezaei, Faezeh Tabesh, Mohammad Reza Yazdchi
Journal of Advances in Medicine and Medical Research · pp. 1–5 · Published 18 Jun 2018
10.9734/JAMMR/2018/41277Abstract
Aims: Obstructive sleep apnea (OSA) increases the risk of cardiac arrhythmias. We investigated QT interval variability among OSA patients. Study Design: It is a descriptive-cross-sectional study. Methodology: Newly diagnosed OSA patients and healthy controls were studied. Inter-heartbeat and QT intervals were extracted from electrocardiography (for 1 hour at 3 AM). QT interval metrics including duration and variability indexes were compared between patients and controls. Results: 35 patients and 13 controls were studied. There was no difference between patients and controls, neither between mild/moderate OSA versus severe OSA patients, in the measured QT interval variables. No significant correlation was found between apnea severity and the measured QT interval variables. Conclusion: We found no difference between OSA patients and controls in QT variability. Also, no clear association between OSA severity and QT variability was observed.
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