Paced QRS morphology predicts incident left ventricular systolic dysfunction and atrial fibrillation
- Resource Type
- Authors
- Prakriti Gaba; Samuel J. Asirvatham; Chance M. Witt; Majd Khasawneh; Htin Aung; Christopher J. McLeod; David O. Hodge; Charles J. Lenz; Martin van Zyl; Andrew N. Rosenbaum; Subir Bhatia
- Source
- Indian Pacing and Electrophysiology Journal, Vol 19, Iss 2, Pp 40-46 (2019)
Indian Pacing and Electrophysiology Journal
- Subject
- Qrs morphology
lcsh:Diseases of the circulatory (Cardiovascular) system
medicine.medical_specialty
030204 cardiovascular system & hematology
03 medical and health sciences
Surface ecg
QRS complex
0302 clinical medicine
Physiology (medical)
Internal medicine
medicine
cardiovascular diseases
030212 general & internal medicine
Lead (electronics)
Adult patients
business.industry
Atrial fibrillation
Ventricular pacing
medicine.disease
Icd implantation
lcsh:RC666-701
cardiovascular system
Cardiology
Original Article
Cardiology and Cardiovascular Medicine
business
- Language
- ISSN
- 0972-6292
Background: The prognostic significance of paced QRS complex morphology on surface ECG remains unclear. This study aimed to assess long-term outcomes associated with variations in the paced QRS complex. Methods: Adult patients who underwent dual-chamber pacemaker implantation with 20% or more ventricular pacing and a 12-lead ECG showing a paced complex were included. The paced QRS was analyzed in leads I and aVL. Long-term clinical and echocardiographic outcomes were compared at 5 years. Results: The study included 844 patients (43.1% female; age 75.0 ± 12.1). Patients with a longer paced QRS (pQRS) duration in lead I had a lower rate of atrial fibrillation (HR 0.80; p = 0.03) and higher rate of systolic dysfunction (HR 1.17; p