Use of T-wave duration and Tpeak-Tend interval as new prognostic markers for patients treated with cardiac resynchronization therapy (original) (raw)

2021

Abstract

BACKGROUND The use of electrocardiography (ECG) is a practical method to evaluate the response to cardiac resynchronization therapy (CRT) implantation, as it is easily performed and saves time. AIMS In this study, it was aimed to assess the predictive value of the T-wave duration and Tpeak-Tend (Tp-e) interval following the CRT implantation administered to heart failure patients. METHODS Sixty-seven patients with left ventricular ejection fraction ≤ 35, New York Heart Association (NYHA) II-III, ambulatory class-IV, normal sinus rhythm, who have complete left bundle branch block on ECG and treated with CRT were included in this study. Patients, who have manifested a ≥ 10% improvement in ejection fraction following CRT implantation, were categorized as "responders", and the remaining patients were categorized as "non-responders". ECGs and echocardiograms were evaluated both six months before and after CRT implantation. RESULTS The post-CRT QRS duration (P = 0.01), ...

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