Left atrial appendage (LAA) closure devices refers to a device placed in the LAA in patients with atrial fibrillation who cannot be anticoagulated pharmaceutically to prevent thromboembolic events. It is placed percutaneously via the femoral vein to right atrium to left atrium by forming a puncture hole in the atrial septum.
Left atrial appendage closure devices occlude the LAA, thereby sealing it off to the blood circulating through the left atrium (LA).
- incomplete atrial closure
- pericardial effusion
- Watchman®: Watchman device - resembles deployed round parachute and consists of titanium frame and plastic cap.
- AtriClip® - resembles hair pin
- Plaato® - consists of cage and occlusion membrane
- Amplatzer® Amulet
- Ultraseal® - consists of two components - bulb and sail, characteristic appearance of the bulb resembling king's hat may help to distinguish it from other left appendage occlusion devices.
Disclosure: I, Aneta Kecler - Pietrzyk , have no actual or potential ethical or financial conflict of interest in relation aforementioned devices. This article is not intended to be a personal endorsement or recommendation of aforementioned products.
- 1. Swaans MJ et al, Percutaneous left atrial appendage closure devices: safety, efficacy, and clinical utility. Med Devices (Auckl). 2016; 9: 309–316.
- 2. Onalan O, Crystal E. Left atrial appendage exclusion for stroke prevention in patients with nonrheumatic atrial fibrillation. Stroke. 38 (2 Suppl): 624-30. doi:10.1161/01.STR.0000250166.06949.95 - Pubmed