WATCHMEN: a case report highlighting the closure of a bilobed left atrial appendage using two WATCHMAN-FLX devices

Background Left atrial appendage occlusion (LAAO) performed percutaneously has emerged as a widely accepted method for stroke prevention, offering a viable alternative to anticoagulation. Numerous studies have demonstrated the effectiveness and safety of this procedure. However, in certain cases, the use of a single LAAO device may not adequately achieve optimal closure due to variations in the anatomy of the left atrial appendage (LAA).Case summary In this manuscript, we highlight the successful closure of a bilobed LAA with a large ostium utilizing two WATCHMAN (TM) FLX devices and using the double sheath technique. The aim was to achieve optimal closure and address the unique anatomical characteristics of the patient's LAA.Discussion The utilization of two LAAO devices in bilobed appendage anatomy, where a single device may not be sufficient, is possible, although it poses a challenge because of the lack of technical expertise and limited published evidence. Transoesophageal imaging can serve as a valuable tool for assessing the precise anatomy of the LAA and guide the selection and placement of the occlusion devices.