Muhammad Bilal Munir1, Muhammad Zia Khan2, Douglas Darden1, Deepak K Pasupula3, Sudarshan Balla2, Frederick T Han1, Ryan Reeves1, Jonathan C Hsu1. 1. Section of Electrophysiology, Division of Cardiology, University of California San Diego, La Jolla, California, USA. 2. Division of Cardiovascular Medicine, West Virginia University Heart & Vascular Institute, Morgantown, West Virginia, USA. 3. Division of Cardiology, Heart and Vascular Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Abstract
OBJECTIVE: To determine trends in real-world utilization and in-hospital adverse events from Watchman implantation since its approval by the Food and Drug Administration in 2015. BACKGROUND: The risk of embolic stroke caused by atrial fibrillation is reduced by oral anticoagulants, but not all patients can tolerate long-term anticoagulation. Left atrial appendage occlusion with the Watchman device has emerged as an alternative therapy. METHODS: This was a retrospective cohort study utilizing data from National Inpatient Sample for calendar years 2015-2017. The outcomes assessed in this study were associated complications, in-hospital mortality, and resource utilization trends after Watchman implantation. Trends analysis were performed using analysis of variance. Multivariable adjusted logistic regression analysis was performed to determine predictors of mortality. RESULTS: A total of 17 700 patients underwent Watchman implantation during the study period. There was a significantly increased trend in the number of Watchman procedures performed over the study years (from 1195 in 2015 to 11 165 devices in 2017, p < .01). A significant decline in the rate of complications (from 26.4% in 2015% to 7.9% in 2017, p < .01) and inpatient mortality (from 1.3% in 2015% to 0.1% in 2017, p < .01) were noted. Predictors of in-hospital mortality included a higher CHA2 DS2 -VASc score (odds ratio [OR]: 2.61 per 1-point increase, 95% confidence interval [CI]: 1.91-3.57), chronic blood loss anemia (OR: 3.63, 95% CI: 1.37-9.61) and coagulopathy (OR: 4.90, 95% CI: 2.32-10.35). CONCLUSION: In contemporary United States clinical practice, Watchman utilization has increased significantly since approval in 2015, while complications and in-patient mortality have declined.
OBJECTIVE: To determine trends in real-world utilization and in-hospital adverse events from Watchman implantation since its approval by the Food and Drug Administration in 2015. BACKGROUND: The risk of embolic stroke caused by atrial fibrillation is reduced by oral anticoagulants, but not all patients can tolerate long-term anticoagulation. Left atrial appendage occlusion with the Watchman device has emerged as an alternative therapy. METHODS: This was a retrospective cohort study utilizing data from National Inpatient Sample for calendar years 2015-2017. The outcomes assessed in this study were associated complications, in-hospital mortality, and resource utilization trends after Watchman implantation. Trends analysis were performed using analysis of variance. Multivariable adjusted logistic regression analysis was performed to determine predictors of mortality. RESULTS: A total of 17 700 patients underwent Watchman implantation during the study period. There was a significantly increased trend in the number of Watchman procedures performed over the study years (from 1195 in 2015 to 11 165 devices in 2017, p < .01). A significant decline in the rate of complications (from 26.4% in 2015% to 7.9% in 2017, p < .01) and inpatient mortality (from 1.3% in 2015% to 0.1% in 2017, p < .01) were noted. Predictors of in-hospital mortality included a higher CHA2 DS2 -VASc score (odds ratio [OR]: 2.61 per 1-point increase, 95% confidence interval [CI]: 1.91-3.57), chronic blood loss anemia (OR: 3.63, 95% CI: 1.37-9.61) and coagulopathy (OR: 4.90, 95% CI: 2.32-10.35). CONCLUSION: In contemporary United States clinical practice, Watchman utilization has increased significantly since approval in 2015, while complications and in-patient mortality have declined.
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