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Meta-Analysis of Safety and Efficacy of Direct Oral Anticoagulants Versus Warfarin According to Time in Therapeutic Range in Atrial Fibrillation
- Source :
- The American Journal of Cardiology. 140:62-68
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Among atrial fibrillation (AF) patients, it is unclear whether the efficacy and safety of direct oral anticoagulants (DOAC) relative to warfarin is consistent across various levels of international normalized ratio (INR) control. To determine the efficacy and safety of DOAC agents compared with warfarin for patients with various levels of anticoagulation control as reflected by their time in therapeutic range (TTR), we conducted a systematic review and meta-analysis of published randomized controlled trials of DOAC versus (vs) warfarin which reported outcomes stratified by TTR. Based on reported center-based TTR (cTTR) ranges, degrees of INR control were categorized into 3 cTTR strata: low (60%), intermediate (60% to 66%), and high (66%). Pooled hazard ratios (HR) and 95% confidence intervals (CI) were determined for stroke or systemic embolism (SSE), major bleeding, and intracranial hemorrhage (ICH). Across all cTTR strata, DOAC-treated patients had lower risk of SSE versus warfarin, with a HR of 0.73 (95% CI 0.61 to 0.88) for the low, 0.76 (95% CI 0.59 to 0.98) intermediate; and 0.78 (95% CI 0.63 to 0.96) high cTTR subgroups. Compared with warfarin, DOAC-treated patients had lower risk of major bleeding in the low and intermediate cTTR strata, and similar risk in the highest cTTR stratum (HR 1.00, 95% CI 0.80 to 1.26). Patients treated with DOAC had lower risk of ICH compared with warfarin (HR 0.55, 95% CI; 0.40 to 0.74) which was observed across all cTTR strata. In conclusion, regardless of the degree of INR control, DOAC agents are preferable over warfarin as stroke prevention therapy for patients with AF.
- Subjects :
- medicine.medical_specialty
Administration, Oral
030204 cardiovascular system & hematology
Lower risk
law.invention
03 medical and health sciences
0302 clinical medicine
Randomized controlled trial
law
Internal medicine
Atrial Fibrillation
Humans
Medicine
cardiovascular diseases
030212 general & internal medicine
Blood Coagulation
Stroke
business.industry
Hazard ratio
Warfarin
Anticoagulants
Atrial fibrillation
medicine.disease
Confidence interval
Treatment Outcome
Meta-analysis
Cardiology
Cardiology and Cardiovascular Medicine
business
medicine.drug
Subjects
Details
- ISSN :
- 00029149
- Volume :
- 140
- Database :
- OpenAIRE
- Journal :
- The American Journal of Cardiology
- Accession number :
- edsair.doi.dedup.....147d76e443a5cb54b33fe5ae98d080c3