February 17, 2015Pacing and Clinical Electrophysiology
Resting Heart Rate and Incident Atrial Fibrillation in the Elderly
Why the study?
Does resting heart rate predict incident atrial fibrillation in elderly persons?
Population
5,226 participants aged 65 years or more (85% white; 42% male) from the Cardiovascular Health Study
Comparison
Resting heart rate ≤60 beats/min or >90… vs Resting heart rate >60 and ≤90 beats/min
Design
Cohort
Follow-up
median 12.7 years
Authors
Discussion
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Member takes
Implication
Low heart rate signals elevated AF risk in elderly; extends prior associations but leaves causal inference open.
Structured PICO
Does resting heart rate predict incident atrial fibrillation in elderly persons?
P
Population
5,226 participants aged 65 years or more (85% white; 42% male) from the Cardiovascular Health Study
I
Intervention
Resting heart rate ≤60 beats/min or >90 beats/min, and as a continuous variable per 5 beats/min decrease
C
Comparator
Resting heart rate >60 and ≤90 beats/min
O
Outcome
Incident atrial fibrillation (AF) identified during yearly study electrocardiograms, participant history of a physician diagnosis, or by hospitalization datahard clinical
In the elderly, a resting heart rate of ≤60 beats/min is associated with an increased risk of developing incident atrial fibrillation.
Cite This Study
O’Neal et al. (2015) studied this question.