Flow diversion of ruptured intracranial aneurysms: a single-center study with a standardized antithrombotic treatment protocol

The use of antithrombotic medication following acute flow diversion for a ruptured intracranial aneurysm (IA) is challenging with no current guidelines. We investigated the incidence of treatment-related complications and patient outcomes after flow diversion for a ruptured IA before and after the implementation of a standardized antithrombotic medication protocol. We conducted a single-center retrospective study including consecutive patients treated for acutely ruptured IAs with flow diversion during 2015–2023. We divided the patients into two groups: those treated before the implementation of the protocol (pre-protocol) and those treated after the implementation of the protocol (post-protocol). The primary outcomes were hemorrhagic and ischemic complications. A secondary outcome was clinical outcome using the modified Ranking Scale (mRS). Totally 39 patients with 40 ruptured IAs were treated with flow diversion (69