Comparison of Watchman device with new oral anti-coagulants in patients with atrial fibrillation: A network meta-analysis

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• 作者：Edward Koifman ; Michael J. Lipinski ; Ricardo O. Escarcega ; Romain Didier ; Sarkis Kiramijyan ; Rebecca Torguson ; Ron Waksman ; ^{Ron.Waksman@Medstar.net" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Stroke prophylaxis ; Atrial fibrillation ; NOAC ; Watchman device
• 刊名：International Journal of Cardiology
• 出版年：2016
• 出版时间：15 February 2016
• 年：2016
• 卷：205
• 期：Complete
• 页码：17-22
• 全文大小：500 K

文摘

New oral anticoagulants (NOAC) and the Watchman device represent an alternative to warfarin for stroke prophylaxis in atrial fibrillation (AF) patients. However, no studies compare these new treatments. We performed a network meta-analysis to indirectly compare Watchman and NOACs among AF patients.

Methods

We performed a MEDLINE search for studies comparing warfarin with NOACs (dabigatran, rivaroxaban, apixaban and edoxaban) or Watchman in AF patients with reported clinical outcomes. Mixed treatment comparison model generation was performed to directly and indirectly compare NOACs, warfarin and Watchman.

Results

14 studies with 246,005 patients were included in the analysis, among which 124,823 were treated with warfarin, 120,450 were treated with NOACs and 732 had Watchman implanted. Mean age was 72 ± 9 years, 53% were male, and mean CHADS2 score was 2.1 ± 1.6. Both NOACs and Watchman were superior to warfarin in hemorrhagic stroke prevention (OR = 0.46 [0.30–0.82] and OR = 0.21 [0.05–0.99], respectively). NOACs significantly reduced total stroke (OR = 0.78 [0.58–0.96]) and major bleeding (OR = 0.78 [0.65–0.91]) compared with warfarin. Indirect comparison between NOAC and Watchman revealed no significant differences in outcomes, though there was a trend toward higher rates of ischemic stroke with Watchman compared with NOAC (OR 2.60 [0.60–13.96]) with the opposite findings with hemorrhagic stroke (OR = 0.44 [0.09–2.14]).

Conclusions

NOAC therapy was superior to warfarin for multiple outcomes while Watchman reduced hemorrhagic stroke. Further studies are needed to assess Watchman versus NOAC to optimize therapy for stroke prevention in AF patients.