The Prevalence of Pacing-Induced Cardiomyopathy (PICM) in Patients With Long Term Right Ventricular Pacing - Is it a Matter Of Definition?

Heart, Lung & Circulation
Gerald KayeArnold C T Ng

Abstract

Chronic right ventricular pacing may contribute to deterioration in left ventricular ejection fraction (LVEF). The aim of the study was to identify the prevalence of pacing-induced cardiomyopathy (PICM) in patients with chronic right ventricular pacing. Patients attending a pacemaker clinic were retrospectively identified as having had transthoracic echocardiographic LVEF measurement during the 12 months prior to device implantation. Those with cardioverter-defibrillators or biventricular devices were excluded. The remaining patients were invited back for a repeat echocardiogram. Three (3) different definitions of PICM were employed: 1) follow-up LVEF of ≤40% if baseline LVEF was ≥50%, or an absolute reduction in LVEF ≥5% if baseline LVEF was <50%; 2) follow-up LVEF of ≤40% if baseline LVEF was ≥50%, or an absolute reduction in LVEF ≥10% if baseline LVEF was ≤50%; 3) absolute reduction in LVEF ≥10% irrespective of baseline LVEF. Alternate causes of cardiomyopathy were excluded following a chart review. The study cohort of 118 included 67 males (mean age 77.8±10.5years) and 51 females (mean age 76.8±11.2years). The mean time between baseline and follow-up echocardiograms was 3.5+1.4years (range 1.5-6.4 years). The prevalence of ...Continue Reading

Citations

Oct 19, 2019·Journal of Cardiovascular Electrophysiology·Gerry Kaye
Nov 15, 2019·Journal of Cardiovascular Electrophysiology·Faisal M Merchant, Suneet Mittal
Oct 28, 2019·Journal of Cardiovascular Electrophysiology·Gerry Kaye
Oct 12, 2019·European Heart Journal·Faisal M Merchant
Mar 22, 2020·Pacing and Clinical Electrophysiology : PACE·Danuta LobodaKrzysztof S Golba
Jun 23, 2020·Chinese Medical Journal·Hong ZhangYu-Jie Zeng
Mar 17, 2021·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Yang YeGuosheng Fu
Sep 2, 2021·Current Cardiology Reviews·Callan Gavaghan

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