Why the study?
PAD is frequent and linked to adverse events in patients undergoing TAVR, but whether PAD status alters the response to bivalirudin versus UFH was unknown.
Does bivalirudin compared to unfractionated heparin improve clinical outcomes in patients with and without peripheral artery disease undergoing transfemoral TAVR?
Does bivalirudin compared to unfractionated heparin improve clinical outcomes in patients with and without peripheral artery disease undergoing transfemoral TAVR?
In patients with or without PAD undergoing transfemoral TAVR, bivalirudin does not significantly improve major adverse outcomes compared to unfractionated heparin, but may increase minor vascular complications in those with PAD.
No differential anticoagulation effect by PAD status in TAVR; leaves open whether dedicated prospective studies would refine periprocedural strategies.
OBJECTIVES: This study sought to investigate the clinical outcomes of patients with and without peripheral artery disease (PAD) in the BRAVO-3 trial with respect to the effect of bivalirudin versus unfractionated heparin (UFH). BACKGROUND: PAD is found frequently in patients undergoing transcatheter aortic valve replacement (TAVR) and is reported to confer an increased risk of adverse events. It is unknown whether patients with and without PAD may demonstrate a differential response to bivalirudin versus UFH. METHODS: BRAVO-3 was a randomized multicenter trial comparing transfemoral TAVR with bivalirudin versus UFH (31 centers, n = 802). Major adverse cardiovascular events (MACE) were a composite of 30-day death, myocardial infarction, or cerebrovascular accidents (CVA). Net adverse cardiovascular events (NACE) were a composite of major bleeding or MACE. RESULTS: The total cohort included 119 patients with PAD. Vascular complications occurred significantly more frequently in patients with PAD both in-hospital (25.2 vs. 16.7%; OR 1.68) and at 30 days (29.4 vs. 17.3%; OR 1.99). No significant differences were observed regarding mortality, NACE, MACE, major bleeding or CVA with bivalirudin versus UFH among patients with or without PAD. In patients with PAD, bivalirudin was associated with an increased risk of minor vascular complications at 30 days. CONCLUSIONS: Patients with PAD undergoing transfemoral TAVR did not exhibit an increased risk of any major adverse events, according to the procedural anticoagulant randomization. However, patients treated with Bivalirudin had significantly higher rates of minor vascular complications.
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Zilberszac et al. (2019) studied this question.
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