Key result
QRS duration was independently associated with atrial fibrillation in patients with left ventricular dysfunction (OR 1.20; 95% CI 1.14-1.25).
Why the study?
Is prolonged QRS duration associated with atrial fibrillation in patients with left ventricular dysfunction?
Population
25,268 patients with left ventricular ejection fraction ♤ 40%, mean age 66.3 years, 71.5% male, from 106…
Comparison
Prolonged QRS duration (QRSd ≥ 120 ms) vs Normal QRS duration (QRSd < 120 ms)
Design
Cohort
Authors
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May support AF risk stratification in LV dysfunction; leaves open prospective validation of added predictive value.
Cohort (n=25,268)
Yes
Is prolonged QRS duration associated with atrial fibrillation in patients with left ventricular dysfunction?
Effect estimate: OR 1.20 (95% CI 1.14-1.25)
p-value: p=< 0.0001
Prolonged QRS duration is independently associated with a higher prevalence of atrial fibrillation in patients with left ventricular dysfunction, suggesting it may serve as a predictor for this arrhythmia.
El‐Chami et al. (2010) conducted a cohort in Left ventricular dysfunction (n=25,268). QRS duration vs. < 120 ms vs 120-150 ms vs > 150 ms was evaluated on Atrial fibrillation (OR 1.20, 95% CI 1.14-1.25, p=< 0.0001). QRS duration was independently associated with atrial fibrillation in patients with left ventricular dysfunction (OR 1.20; 95% CI 1.14-1.25).
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