AI Article Synopsis
- A study analyzed postprocedure care for patients who underwent left atrial appendage occlusion (LAAO) using the Watchman device between 2016 and 2018, focusing on adherence to established treatment protocols.
- Results showed that only 12.2% of the 31,994 patients received the full treatment protocols, with common discrepancies found in discharge antithrombotic medications.
- Additionally, compared with those discharged on warfarin and aspirin, patients receiving just warfarin or direct oral anticoagulants (DOAC) had significantly lower risks of adverse events at both 45 days and 6 months post-procedure.
Article Abstract
Background: Pivotal trials of percutaneous left atrial appendage occlusion (LAAO) used specific postprocedure treatment protocols.
Objectives: This study sought to evaluate patterns of postprocedure care after LAAO with the Watchman device in clinical practice and compare the risk of adverse events for different discharge antithrombotic strategies.
Methods: We evaluated patients in the LAAO Registry of the National Cardiovascular Data Registry who underwent LAAO with the Watchman device between 2016 and 2018. We assessed adherence to the full postprocedure trial protocol including standardized follow-up, imaging, and antithrombotic agents and then evaluated the most commonly used antithrombotic strategies and compared the rates and risk of adverse events at 45 days and 6 months by means of multivariable COX frailty regression.
Results: Among 31,994 patients undergoing successful LAAO, only 12.2% received the full postprocedure treatment protocol studied in pivotal trials; the most common protocol deviations were with discharge antithrombotic medications. The most common discharge medication strategies were warfarin and aspirin (36.9%), direct oral anticoagulant (DOAC) and aspirin (20.8%), warfarin only (13.5%), DOAC only (12.3%), and dual antiplatelet therapy (5.0%). In multivariable Cox frailty regression, the adjusted risk of any adverse event through the 45-day follow-up visit were significantly lower for discharge on warfarin alone (HR: 0.692; 95% CI: 0.569-0.841) and DOAC alone (HR: 0.731; 95% CI: 0.574-0.930) compared with warfarin and aspirin. Warfarin alone retained lower risk at the 6-month follow-up.
Conclusions: In contemporary U.S. practice, practitioners rarely used the full U.S. Food and Drug Administration-approved postprocedure treatment protocols studied in pivotal trials of the Watchman device. Discharge after implantation on warfarin or DOAC without concomitant aspirin was associated with lower risk of adverse outcomes.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9097170 | PMC |
| http://dx.doi.org/10.1016/j.jacc.2022.02.047 | DOI Listing |
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