Abstract:
BACKGROUND:Current American and European guidelines emphasize the importance of rate-control treatments in treating atrial fibrillation with a Class I recommendation, although data on the survival benefits of rate control are lacking. The goal of the present study was to investigate whether patients receiving rate-control drugs had a better prognosis compared with those without rate-control treatment. METHODS AND RESULTS:This study used the National Health Insurance Research Database in Taiwan. There were 43 879, 18 466, and 38 898 patients with atrial fibrillation enrolled in the groups receiving β-blockers, calcium channel blockers, and digoxin, respectively. The reference group consisted of 168 678 subjects who did not receive any rate-control drug. The clinical end point was all-cause mortality. During a follow-up of 4.9±3.7 years, mortality occurred in 88 263 patients (32.7%). After adjustment for baseline differences, the risk of mortality was lower in patients receiving β-blockers (adjusted hazard ratio=0.76; 95% confidence interval=0.74-0.78) and calcium channel blockers (adjusted hazard ratio=0.93; 95% confidence interval=0.90-0.96) compared with those who did not receive rate-control medications. On the contrary, the digoxin group had a higher risk of mortality with an adjusted hazard ratio of 1.12 (95% confidence interval=1.10-1.14). The results were observed consistently in subgroup analyses and among the cohorts after propensity matching. CONCLUSIONS:In this nationwide atrial fibrillation cohort, the risk of mortality was lower for patients receiving rate-control treatment with β-blockers or calcium channel blockers, and the use of β-blockers was associated with the largest risk reduction. Digoxin use was associated with greater mortality. Prospective, randomized trials are necessary to confirm these findings.
journal_name
Circulationjournal_title
Circulationauthors
Chao TF,Liu CJ,Tuan TC,Chen SJ,Wang KL,Lin YJ,Chang SL,Lo LW,Hu YF,Chen TJ,Chiang CE,Chen SAdoi
10.1161/CIRCULATIONAHA.114.013709subject
Has Abstractpub_date
2015-10-27 00:00:00pages
1604-12issue
17eissn
0009-7322issn
1524-4539pii
CIRCULATIONAHA.114.013709journal_volume
132pub_type
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