T wave peak-to-end interval in COPD
Authors Tural Onur S, Emet S, Sokucu SN, Onur I
Received 5 July 2017
Accepted for publication 6 February 2018
Published 13 July 2018 Volume 2018:13 Pages 2157—2162
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 2
Editor who approved publication: Dr Richard Russell
Seda Tural Onur,1 Samim Emet,2 Sinem Nedime Sokucu,1 Imran Onur2
1Yedikule Chest Diseases and Thoracic Surgery Training and Research Hospital, Chest Disease, Zeytinburnu, Istanbul, Turkey; 2Department of Cardiology, Istanbul Faculty of Medicine, Istanbul University, Fatih, Istanbul, Turkey
Introduction: The interval from the peak to the end of the electrocardiographic (ECG) T wave (Tp–Te) can estimate cardiovascular mortality and ventricular tachyarrhythmias.
Objectives: In this study, we aimed to define a new ECG parameter in patients with COPD.
Methods: This was a cross-sectional observational study that included COPD patients who were diagnosed previously and followed up in the outpatient clinic. All data of the patients’ demographic features, history, spirometry, and electrocardiographs were analyzed.
Results: We enrolled 134 patients with COPD and 40 healthy volunteers as controls in our study. Patients already known to be having COPD who were under follow-up for their COPD and diagnosed as having COPD according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD) criteria were included. Men comprised 82.8% of the COPD group and 73.2% of controls. The mean age in the COPD and control group was 60.2±9.4 and 58.2±6.7 years, respectively. There was no significant difference between the groups for age or sex (p=0.207, p=0.267, respectively). There were 46 (34.3%) patients in group A, 23 (17.2%) patients in group B, 26 (19.4%) patients in group C, and 46 (29.1%) patients in group D as COPD group. There was a significant increase in Tp–Te results in all precordial leads in the COPD group compared with the control group (p<0.05). Precordial V4 lead has the most extensive area under the curve (0.831; sensitivity 76.5%, specificity 89.6%).
Conclusion: We present strong evidence that Tp–Te intervals were increased in patients with COPD, which suggests that there may be an association between COPD and ventricular arrhythmias and cardiac morbidity.
Keywords: COPD, Tp–Te interval, ventricular arrhythmia, cardiac morbidity
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