Aspirin Alone Versus Dual Antiplatelet Therapy after Transcatheter Aortic Valve Replacement: A Systematic Review and Meta-Analysis

Abstract Background The performance of transcatheter aortic valve replacement (TAVR) has expanded considerably during the past decade. Technological advances and refinement in implantation techniques have resulted in improved procedural outcomes, whereas indications are progressively extending toward lower-risk patients. Ischemic/embolic complications and major bleeding remain important and strongly correlate to mortality. In this regard, the optimal antithrombotic regimen after successful transcatheter aortic valve replacement remains unclear. Purpose To compare the efficacy and safety of single antiplatelet therapy (SAPT) versus dual antiplatelet therapy (DAPT) for post Transcatheter Aortic Valve Replacement. Search strategy Key Terms: transcatheter aortic valve replacement, transcatheter aortic valve implantation, antiplatelet, single antiplatelet therapy, dual antiplatelet therapy. Selection criteria Four randomized, controlled clinical trials comparing single antiplatelet therapy versus dual antiplatelet therapy for post TAVR patients were included in this study. Method Extensive search of PubMed, Medline, Cochrane and Ovid was done for articles published until November 20, 2020. Studies were limited to RCTs comparing SAPT and DAPT among patients who underwent TAVR. Outcome measures include: stroke, myocardial infarction, all-cause mortality and major bleeding. Two reviewers independently reviewed the studies. Results were gathered from published articles, journals and clinical trials. Studies were critically appraised with regards to methods of minimizing bias. All four studies included received a quality scale for meta-analysis overall score of not less than B. Statistical analysis was done using Review manager V5.4. Main results Four RCTs with 1086 patients were included in this meta-analysis. Overall, the risk of stroke (OR 0.94 [0.54 −1.64]), myocardial infarction (OR 0.50 [0.18–1.40]), and overall mortality (OR 1.01 [0.65–1.57]) did not differ significantly between DAPT and SAPT. There was noted increased risk of bleeding noted with DAPT, thus favoring SAPT (OR 0.44 [0.30–0.65]). Author's conclusions Among patients who underwent TAVR, DAPT compared to SAPT had similar rates of stroke, myocardial infarction and death. Due to lower rates of bleeding, we recommend using single antiplatelet therapy after TAVR. FUNDunding Acknowledgement Type of funding sources: None.

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Single or dual antiplatelet therapy after transcatheter aortic valve replacement: an updated systemic review and meta-analysis

Journal of Thoracic Disease ◽

10.21037/jtd.2019.01.87 ◽

2019 ◽

Vol 11 (3) ◽

pp. 959-968 ◽

Cited By ~ 6

Author(s):

Wenjie Zuo ◽

Mingming Yang ◽

Yanru He ◽

Chunshu Hao ◽

Lijuan Chen ◽

...

Keyword(s):

Aortic Valve ◽

Aortic Valve Replacement ◽

Antiplatelet Therapy ◽

Valve Replacement ◽

Transcatheter Aortic Valve Replacement ◽

Dual Antiplatelet Therapy ◽

Meta Analysis ◽

Systemic Review ◽

Transcatheter Aortic Valve

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Dual Antiplatelet Therapy vs. Single Antiplatelet Therapy After Transcatheter Aortic Valve Replacement: An Updated Systematic Review and Meta-Analysis

Frontiers in Cardiovascular Medicine ◽

10.3389/fcvm.2021.679703 ◽

2021 ◽

Vol 8 ◽

Author(s):

Yipeng Zhang ◽

Lan Shen ◽

Wentao Yang ◽

Ben He

Keyword(s):

Systematic Review ◽

Aortic Valve ◽

Aortic Valve Replacement ◽

Antiplatelet Therapy ◽

Major Bleeding ◽

Transcatheter Aortic Valve Replacement ◽

Dual Antiplatelet Therapy ◽

Meta Analysis ◽

Transcatheter Aortic Valve ◽

Life Threatening

Background: Although mainstream guidelines recommend dual antiplatelet therapy (DAPT) with aspirin and clopidogrel in patients following transcatheter aortic valve replacement (TAVR), it is not evidence-based. We aim to investigate the safety and efficacy of DAPT vs. single antiplatelet therapy (SAPT) after TAVR, and review updated evidence.Methods: We systematically searched PubMed, Embase, and Cochrane for studies comparing DAPT to SAPT after TAVR from inception to November 30, 2020. The primary outcome was major adverse cardiac and cerebrovascular events, including all-cause mortality, cardiovascular death, myocardial infarction (MI), stroke, and major or life-threatening bleeding (LTB). Subgroup analysis was performed according to study type (randomized control trials vs. observational studies) using a fixed-effects model. The quality of evidence was assessed by two scoring systems and GRADE (Grading of Recommendations Assessment, Development, and Evaluation).Results: Twelve studies of 20,766 patients were included in our meta-analysis. Compared with SAPT, DAPT was associated with an increased risk for combined life threatening and major bleeding [OR 1.73 (1.19–2.51), p = 0.004] after TAVR. Such a difference was largely driven by major bleeding [OR 2.29 (1.68–3.11), p < 0.001]. There were no significant differences on major adverse cardiovascular events (MACE) [OR 1.19 (0.99–1.44), p = 0.07], cardiovascular mortality [OR 1.46 (0.93–2.30), p = 0.10], and stroke [OR 0.97 (0.80–1.16), p = 0.71].Conclusions: Compared with SAPT, post-TAVR DAPT was associated with increased risks of major or life-threatening bleeding without additional benefits of reducing thrombotic events. Future guidelines for post-TAVR antiplatelet strategy are expected to be updated as new high-quality evidence emerges.Systematic Review Registration: PROSPERO, Identifier: CRD42021230075.

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