Family history of atrial fibrillation is associated with earlier-onset and more symptomatic atrial fibrillation: Results from the Outcomes Registry for Better Informed Treatment of Atrial Fibrillation (ORBIT-AF) registry - 12/05/16
, Emil Loldrup Fosbøl, MD, PhD b, Sunghee Kim, PhD c, Gregg C. Fonarow, MD d, Bernard J. Gersh, MB, ChB, DPhil e, Peter R. Kowey, MD, FHRS f, Elaine Hylek, MD, MPH f, Kenneth W. Mahaffey, MD g, Laine Thomas, PhD c, Jonathan P. Piccini, MD, MHS, FHRS c, Eric D. Peterson, MD, MPH con behalf of the
ORBIT-AF Investigators
Riassunto |
Background |
We addressed whether patients with a family history of atrial fibrillation (AF) were diagnosed as having AF earlier in life, were more symptomatic, and had worse outcomes compared with those without a family history of AF.
Methods |
Using the ORBIT-AF, we compared symptoms and disease characteristics in those with and without a family history of AF. A family history of AF was defined as AF in a first-degree family member and obtained by patient self-reporting. Multivariable Cox proportional hazard analyses were performed to compare the incidence of cardiovascular outcomes, AF progression, all-cause hospitalization, and all-cause death.
Results |
Among 9,999 patients with AF from 176 US outpatient clinics, 1,481 (14.8%) had a family history of AF. Relative to those without, those with a family history of AF developed AF 5 years earlier on average (median age 65 vs 70 years, P < .01), with less comorbidity, and had more severe AF-related symptoms. No differences were found between the 2 groups in the risk of AF progression (adjusted hazard ratio [HR] 0.98, 95% CI 0.85-1.14), stroke, non–central nervous system embolism, or transient ischemic attack (adjusted HR 0.95, 95% CI 0.67-1.34), all-cause hospitalization (adjusted HR 1.03, 95% CI 0.94-1.12), and all-cause death (adjusted HR 1.05, 95% CI 0.86-1.27).
Conclusions |
Patients with a family history of AF developed AF at a younger age, had less comorbidity, and were more symptomatic. Once AF developed, no significantly increased risks of AF progression and thromboembolism were associated with a family history of AF compared with no family history.
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Vol 175
P. 28-35 - Maggio 2016 Ritorno al numero
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