Risk Factors for Bradycardia Requiring Pacemaker in  AFib | Heart and Vascular Health | Scoop.it

My comment:  patients with A fib sometimes need a pacemaker because their herat rate slows down to much.  THis study helps identify patient groups that are a thigher risk for needing a pacemeker. heart failure was the most important risk factor for needing a pcaemaker.


Symptomatic bradycardia may complicate atrial fibrillation (AF) and necessitate a permanent pacemaker. Study Of the 362 patients, 119 cases had permanent pacemakers implanted for bradycardia after AF diagnosis, and 243 controls were alive without pacemakers.

The follow-up was 4.5 years.

Odds ratios were determined

- age at the time of AF diagnosis (1.02, [CI] 1 to 1.04)

- female gender (1.58, CI 0.95 to 2.63)

- previous heart failure (2.72, 95% CI 1.47 to 5.01)

- African American race (0.33, 95% CI 0.12 to 0.94)

The post hoc model identified permanent AF (odds ratio 2.99, 95% CI 1.61 to 5.57) and atrioventricular nodal blocker use (odds ratio 1.43, 95% CI 0.85 to 2.4).

Conclusion, in patients with AF, heart failure and permanent AF each nearly triple the odds of developing bradycardia requiring a permanent pacemaker; although not statistically significant, our results suggest that women are more likely and African Americans less likely to develop bradycardia requiring pacemaker implantation.