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Clinical Trial
Journal Article
Multicenter Study
Effect of Obesity on the Prognostic Impact of Atrial Fibrillation in Heart Failure With Preserved Ejection Fraction.
BACKGROUND: Although obesity is associated with left ventricular hypertrophy, diastolic dysfunction, and occurrence of atrial fibrillation (AF), obese heart failure (HF) patients have a more favorable clinical outcome (obesity paradox). The clinical impact of AF on obese or lean HF patients has not been fully elucidated.Methods and Results:We analyzed 1,681 patients who were enrolled in the West Tokyo Heart Failure Registry (WET-HF Registry), a multicenter, prospective cohort registry from 2005 through 2014. We assigned them to 3 categories based on body mass index (BMI): low, BMI <18.5; medium, BMI ≥18.5 and <25; and high, BMI ≥25 (n=182/915/400). The clinical endpoint was all-cause death or readmission for acute decompensated HF. During 406 days of follow-up (IQR, 116-739 days), AF was associated with a higher risk of the endpoint in the HF with preserved ejection fraction (HFpEF) group (P<0.001, log-rank test), but not in the HF with reduced EF (HFrEF) group. AF was associated with a higher risk of the endpoint in low and medium BMI patients with HFpEF (P=0.016 and 0.009, respectively). On Multivariate Cox proportional hazards analysis, AF was an independent predictor of the endpoint in patients with BMI <25 from the HFpEF group (hazard ratio, 1.74; 95% CI: 1.21-2.54, P=0.003), but not in the other subgroups.
CONCLUSIONS: AF had a negative impact on clinical outcome in non-obese patients with HFpEF.
CONCLUSIONS: AF had a negative impact on clinical outcome in non-obese patients with HFpEF.
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