Safety and feasibility of the Woven EndoBridge device deployment with monitored anesthesia care

The Woven EndoBridge (WEB) device can be used for complex intracranial aneurysms (IAs), mostly under general anesthesia (GA). However, it remains controversial if anesthetic management could affect procedural outcomes after endovascular treatments using the WEB for IAs. The purpose of this study is to investigate the safety and feasibility of the WEB deployment for patients under monitored anesthesia care (MAC).

We reviewed 27 IAs in 25 patients who were treated by using the WEB device from February to December in 2019. Our first-line anesthetic management of patients during the procedures was the MAC. GA was performed based on patient's clinical status or preference. Subjects' demographic data, aneurysms' characteristics, procedure-related complications, grade of stasis after the WEB deployment, duration of procedure, and length of hospital stay were compared between subjects who underwent GA versus those who underwent MAC.

Successful deployment of the WEB device was obtained in all patients. In total, 10 and 17 IAs were treated with GA and MAC, respectively. There was no significant difference in demographics (age: p = 0.12, sex: p = 0.54), aneurysms' characteristics (ruptured: p = 1.00, neck width: p = 0.96, aspect ratio: p = 0.98, maximum diameter: p = 0.69), complications (p = 1.00), postprocedural grade of stasis (p = 1.00), duration of the procedure (p = 0.23), and the length of hospital stay (p = 0.81) between GA and MAC.

MAC can be used for the WEB device deployment safely and effectively.