with WATCHMAN . As the procedure has become the standard of care, these complications have become less frequent. with WATCHMAN . Yes, the device helps people but it's also expense and carries potential complications. Watchman in the Real World: Reports on Use in High-Risk Patients and Overall Safety. The newest data on Watchman have reinforced my negative view. During the Watchman clinical trials, a small percentage of people suffered stroke, clots around the device, or fluid buildup (pericardial effusion) in the membrane surrounding the heart. WATCHMAN COMPLICATIONS REPORTED IN THE MANUFACTURER AND USER FACILITY DEVICE EXPERIENCE DATABASE. Procedures to implant the WATCHMAN left atrial occlusion device had a high implant success rate and a low rate of in-hospital complications in … Arrhythmias and Clinical EP. Patients with the Watchman Device can typically stop strong blood thinning medication such as Coumadin 45 days after the device is implanted therefore decreasing the chance of bleeding complications and the need to take daily medicines. Efficacy Issues: Two studies published in 2018, one from Watchman investigators, [2] and the other from independent French researchers, [3] found high rates of device-related thrombus on follow-up echocardiograms (Translation: clot stuck to the device). The Watchman occluder is a device for percutaneous LAA occlusion and is at present investigated in the PROTECT AF trial. The Watchman device is a good example of the double-edged sword that is modern medicine. The left atrial appendage is a relatively thinly walled structure. The device can apply pressure on the LAA. Contact: Nicole Napoli, nnapoli@acc.org, 202-375-6523 WASHINGTON (Mar 29, 2020) - Procedures to implant the WATCHMAN left atrial occlusion device had a high implant success rate and a low rate of in-hospital complications in an analysis of more than 38,000 procedures presented at the American College of Cardiology’s Annual Scientific Session Together with World Congress of … Search for more papers by this author , Lauren Rousseau. Shady Henien, Lauren Rousseau, Alan Miller, Rachel Karo, and ; Antony Chu; Shady Henien. It is possible that the LAA could rupture while the device is deployed. Introduction: Pericardial effusion/tamponade (PE/PT) is a rare but serious complication following left atrial appendage closure (LAAC). LAA occlusion reduces stroke by preventing blood clots from forming in the left atrial appendage. Risks of LAA Closure. 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