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Atrial fibrillation and the risk of sudden cardiac death: the atherosclerosis risk in communities study and cardiovascular health study.

Monday,2013-04-22 13:53 America/Los_Angeles — eenright
TitleAtrial fibrillation and the risk of sudden cardiac death: the atherosclerosis risk in communities study and cardiovascular health study.
Publication TypeJournal Article
Year of Publication2013
AuthorsChen, LY, Sotoodehnia, N, Bůzková, P, Lopez, FL, Yee, LM, Heckbert, SR, Prineas, R, Soliman, EZ, Adabag, S, Konety, S, Folsom, AR, Siscovick, D, Alonso, A
JournalJAMA Intern Med
Volume173
Issue1
Pagination29-35
Date Published2013 Jan 14
ISSN2168-6114
KeywordsAged, Atrial Fibrillation, Cardiovascular Diseases, Death, Sudden, Cardiac, Demography, Ethnic Groups, Female, Humans, Incidence, Male, Middle Aged, Proportional Hazards Models, Risk Assessment, Risk Factors, Sex Factors, United States
Abstract<p><b>BACKGROUND: </b>It is unknown whether atrial fibrillation (AF) is associated with an increased risk of sudden cardiac death (SCD) in the general population. This association was examined in 2 population-based cohorts.</p><p><b>METHODS: </b>In the Atherosclerosis Risk in Communities (ARIC) Study, we analyzed data from 15 439 participants (baseline age, 45-64 years; 55.2% women; and 26.6% black) from baseline (1987-1989) through December 31, 2001. In the Cardiovascular Health Study (CHS), we analyzed data from 5479 participants (baseline age, ≥65 years; 58.2% women; and 15.4% black) from baseline (first cohort, 1989-1990; second cohort, 1992-1993) through December 31, 2006. The main outcome was physician-adjudicated SCD, defined as death from a sudden, pulseless condition presumed to be due to a ventricular tachyarrhythmia. The secondary outcome was non-SCD (NSCD), defined as coronary heart disease death not meeting SCD criteria. We used Cox proportional hazards models to assess the association between AF and SCD/NSCD, adjusting for baseline demographic and cardiovascular risk factors.</p><p><b>RESULTS: </b>In the ARIC Study, 894 AF, 269 SCD, and 233 NSCD events occurred during follow-up (median, 13.1 years). The crude incidence rates of SCD were 2.89 per 1000 person-years (with AF) and 1.30 per 1000 person-years (without AF). The multivariable hazard ratios (HRs) (95% CIs) of AF for SCD and NSCD were 3.26 (2.17-4.91) and 2.43 (1.60-3.71), respectively. In the CHS, 1458 AF, 292 SCD, and 581 NSCD events occurred during follow-up (median, 13.1 years). The crude incidence rates of SCD were 12.00 per 1000 person-years (with AF) and 3.82 per 1000 person-years (without AF). The multivariable HRs (95% CIs) of AF for SCD and NSCD were 2.14 (1.60-2.87) and 3.10 (2.58-3.72), respectively. The meta-analyzed HRs (95% CIs) of AF for SCD and NSCD were 2.47 (1.95-3.13) and 2.98 (2.52-3.53), respectively.</p><p><b>CONCLUSIONS: </b>Incident AF is associated with an increased risk of SCD and NSCD in the general population. Additional research to identify predictors of SCD in patients with AF is warranted.</p>
DOI10.1001/2013.jamainternmed.744
Alternate JournalJAMA Intern Med
PubMed ID23404043
PubMed Central IDPMC3578214
Grant ListHHSN268201100012C / HL / NHLBI NIH HHS / United States
HHSN268201100009I / HL / NHLBI NIH HHS / United States
N01-HC-85085 / HC / NHLBI NIH HHS / United States
HHSN268201100010C / HL / NHLBI NIH HHS / United States
R01 AG015928 / AG / NIA NIH HHS / United States
HHSN268201100008C / HL / NHLBI NIH HHS / United States
U01 HL080295 / HL / NHLBI NIH HHS / United States
HHSN268201100005G / HL / NHLBI NIH HHS / United States
HHSN268201100008I / HL / NHLBI NIH HHS / United States
N01-HC-85081 / HC / NHLBI NIH HHS / United States
HHSN268201100007C / HL / NHLBI NIH HHS / United States
N01 HC015103 / HC / NHLBI NIH HHS / United States
R56 AG020098 / AG / NIA NIH HHS / United States
HHSN268201100011I / HL / NHLBI NIH HHS / United States
HHSN268201100011C / HL / NHLBI NIH HHS / United States
RC1 HL099452 / HL / NHLBI NIH HHS / United States
AG-20098 / AG / NIA NIH HHS / United States
N01HC55222 / HL / NHLBI NIH HHS / United States
N01-HC-85086 / HC / NHLBI NIH HHS / United States
N01HC85086 / HL / NHLBI NIH HHS / United States
R01 HL088456 / HL / NHLBI NIH HHS / United States
AG-027058 / AG / NIA NIH HHS / United States
N01-HC-85082 / HC / NHLBI NIH HHS / United States
HHSN268201100006C / HL / NHLBI NIH HHS / United States
N01 HC-55222 / HC / NHLBI NIH HHS / United States
HHSN268201200036C / HL / NHLBI NIH HHS / United States
R01 HL102214 / HL / NHLBI NIH HHS / United States
HHSN268201100005I / HL / NHLBI NIH HHS / United States
N01-HC-85083 / HC / NHLBI NIH HHS / United States
N01-HC-75150 / HC / NHLBI NIH HHS / United States
N01-HC-85080 / HC / NHLBI NIH HHS / United States
R01 HL080295 / HL / NHLBI NIH HHS / United States
HL102214 / HL / NHLBI NIH HHS / United States
R01 AG020098 / AG / NIA NIH HHS / United States
N01HC75150 / HL / NHLBI NIH HHS / United States
HHSN268201100009C / HL / NHLBI NIH HHS / United States
HHSN268201100005C / HL / NHLBI NIH HHS / United States
HHSN268201100007I / HL / NHLBI NIH HHS / United States
N01-HC-85079 / HC / NHLBI NIH HHS / United States
HL080295 / HL / NHLBI NIH HHS / United States
N01-HC-85239 / HC / NHLBI NIH HHS / United States
AG-023629 / AG / NIA NIH HHS / United States
N01HC85079 / HL / NHLBI NIH HHS / United States
R01 AG023629 / AG / NIA NIH HHS / United States
R01 AG027058 / AG / NIA NIH HHS / United States
N01 HC045133 / HC / NHLBI NIH HHS / United States
N01 HC035129 / HC / NHLBI NIH HHS / United States
R56 AG023629 / AG / NIA NIH HHS / United States
N01-HC-85084 / HC / NHLBI NIH HHS / United States

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