Characteristics of the patients
A total of 304 consecutive patients who underwent successful LAAC with the Watchman occluder between February 2012 and April 2017 at the Lichtenfels site were treated with the ACT regimen. A total of 220 patients at the Coburg site underwent Watchman implantation between November 2016 and May 2018 and received DAPT regimen. The baseline characteristics of the two groups are shown in Table 1. The patients in the DAPT group were significantly older, less likely to have a history of liver dysfunction at baseline, and had lower left ventricular ejection fraction, more tendency to take drugs with a predisposition to bleeding and have a history of MB events. The mean CHA2DS2-VASc and HAS-BLED scores were 4.8±1.5 and 3.3±0.7 for the DAPT group, respectively, and 4.5±1.7 and 3.4±1.0 for the ACT group, respectively.