Key result
Baseline conduction abnormalities predict pacemaker need, while prior cohorts without abnormalities had a 14-16% pacemaker yield.
Why the study?
While baseline conduction abnormalities predict subsequent pacemaker requirement in older adults receiving an implantable cardiac monitor for unexplained falls or syncope, the absolute pacemaker yield when the baseline ECG is normal is less clear.
Observational
Answers are grounded in this paper and cite their sources.
Baseline ECG conduction defects may aid syncope risk stratification in older adults; leaves open whether targeted pacing improves outcomes.
Implantable cardiac monitors (ICMs) are increasingly used in older adults with unexplained falls or syncope. Baseline conduction abnormalities predict subsequent pacemaker requirement, with bifascicular block and right bundle branch block the strongest markers (pooled odds ratios approximately 3)1. The absolute pacemaker yield when the baseline electrocardiogram (ECG) is normal is less clear. In predominantly middle-aged cohorts, patients without baseline conduction abnormalities received a permanent pacemaker in 14-16% of cases 2,3.
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Febo et al. (2026) conducted an observational in Unexplained falls or syncope. Baseline electrocardiogram conduction abnormalities vs. Normal baseline electrocardiogram was evaluated on Permanent pacemaker implantation. Baseline conduction abnormalities predict pacemaker need, while prior cohorts without abnormalities had a 14-16% pacemaker yield.
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