The efficacy of minimalist percutaneous implantation of WATCHMAN FLX left atrial appendage closure guided by DSA in patients with non-valvular atrial fibrillation:an observational study
Objective To investigate the efficacy of minimalist percutaneous implantation of WATCHMAN FLX left atrial appendage closure(LAAC)only guided by digital subtraction angiography(DSA).Methods From June 2022 to January 2024,15 patients with non-valvular atrial fibrillation who underwent implantation of WATCHMAN FLX guided by DSA in the First Affiliated Hospital of Ningbo University were included.The procedural and follow-up data were recorded.Results The mean operation time and fluoroscopy time were(41.3±10.3)min and(7.7±2.4)min,respectively.The maximal diameters of the orifice and maximal depth were(24.0±4.5)mm and(27.4±5.4)mm,respectively.Successful device release was achieved at the first attempt in 14 patients.Device resizing was not necessary in any patients.The size of the device was(28.5±5.2)mm.No significant peridevice leak was detected by DSA after implantation.None experienced thromboembolic events,major bleeding events or pericardial effusion periprocedurally.One(6.7%)had ecchymosis at the access site which was absorbed after one week.No device-related thrombus was detected on repeated transesophageal echocardiography post procedure.Peridevice leak＜3 mm was detected in 3 patients(20.0%).After a median follow-up period of 310(163,631)days,no thromboembolic or major bleeding events occurred.Conclusion Minimalist percutaneous implantation of WATCHMAN FLX LAAC guided by DSA in patients with non-valvular atrial fibrillation was safe and effective.
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