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Research Paper|Volume 12, Issue 19|pp 19073—19082

Prognostic value and prevalence of complete right bundle branch block in an elderly population: a community-based 10-year prospective study

Sherri Shih-Fan Yeh1, Ching-Yu Julius Chen2, I-Chien Wu3, Chih-Cheng Hsu3, Tzu-Yu Chen3, Wei-Ting Tseng3, Feng-Cheng Tang4, Chi-Chung Wang5, Chung-Chou Juan6, Hou-Chang Chiu7,8, Huey-Ming Lo9,10, Dun-Hui Yang11, Jyh-Ming Jimmy Juang2, Chao Agnes Hsiung3
  • 1Department of Environmental and Occupational Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
  • 2Cardiovascular Center and Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
  • 3Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan
  • 4Department of Occupational Medicine, Changhua Christian Hospital, Changhua, Taiwan
  • 5Department of Family Medicine, Mennonite Christian Hospital, Hualien, Taiwan
  • 6Department of Surgery, Yuan’s General Hospital, Kaohsiung, Taiwan
  • 7Department of Neurology, Shin Kong Wu Ho Su Memorial Hospital, Taipei, Taiwan
  • 8College of Medicine, Fu-Jen Catholic University, New Taipei, Taiwan
  • 9Section of Cardiology, Department of Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
  • 10School of Medicine, Fu-Jen Catholic University, New Taipei, Taiwan
  • 11Department of Radiology, Tainan Municipal Hospital, Tainan, Taiwan
Received: January 27, 2020Accepted: July 6, 2020Published: October 6, 2020
https://doi.org/10.18632/aging.103702

Copyright: © 2020 Yeh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Complete right bundle branch block (CRBBB) occurs in 0.2% to 1.3% of the general population, but its prognostic significance in the geriatric population is unknown. We prospectively investigated the prevalence and prognostic value of CRBBB in individuals aged ≥65 years in a community-based population in Taiwan. A total of 5,830 community-dwelling individuals were prospectively recruited from 7 regions across Taiwan starting in December 2008 through March 2013. Those aged ≥65 years were included in the analysis (N=3,383). All subjects underwent a home visit and standardized medical exams and were followed up annually until the end of April 2019; cause of death was documented by citizen death records. The mean age of the study cohort was 73.5±5.9 years (65-104), and 47.21% were men. Among these individuals, 171 (5.05%) had CRBBB; the prevalence was higher in men (7.08%) than in women (3.25%). Subjects with CRBBB were older than those without CRBBB (75.4±6.5 vs. 73.4±5.9), and the frequency of CRBBB increased with age. Survival analysis revealed that all-cause mortality and cardiac mortality were similar in individuals with and without CRBBB during a mean follow-up of 92.6±23.6 months. CRBBB is not associated with increased risk of mortality in the geriatric population.