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

Sherri Shih-Fan Yeh1, Ching-Yu Julius Chen2, I-Chien Wu3

  • 1Department of Environmental and Occupational Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan.

Aging
|October 6, 2020
PubMed

Insights

Complete right bundle branch block (CRBBB) is common in older adults, but this study found it does not increase mortality risk. This finding is crucial for understanding CRBBB in geriatric populations.

Area of Science:

  • Cardiology
  • Geriatrics
  • Epidemiology

Background:

  • Complete right bundle branch block (CRBBB) prevalence is 0.2%-1.3% in the general population.
  • The prognostic significance of CRBBB in the geriatric population remains largely unknown.
  • Understanding CRBBB in older adults is essential for accurate risk assessment.

Purpose of the Study:

  • To investigate the prevalence of CRBBB in community-dwelling individuals aged 65 years and older.
  • To determine the prognostic value of CRBBB concerning all-cause and cardiac mortality in this demographic.
  • To assess the association between CRBBB and mortality risk in the geriatric population.

Main Methods:

  • Prospective, community-based cohort study in Taiwan.
  • Recruited 5,830 individuals, with 3,383 aged ≥65 years included in the analysis.
  • Annual follow-up for mortality data, including cause of death, over a mean of 92.6 months.

Main Results:

  • The prevalence of CRBBB in individuals aged ≥65 years was 5.05%, higher in men (7.08%) than women (3.25%).
  • CRBBB prevalence increased with age.
  • Survival analysis showed no significant difference in all-cause or cardiac mortality between individuals with and without CRBBB.

Conclusions:

  • Complete right bundle branch block is not associated with an increased risk of mortality in the geriatric population.
  • The findings suggest CRBBB may be a benign finding in older adults without other cardiac conditions.
  • Further research may explore specific subgroups within the geriatric population.

Keywords:
elderlyelectrocardiogramright bundle branch block

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