Abstract TP427: National Estimates of Recurrent Intracranial Hemorrhage Among Patients with Ruptured Intracranial Aneurysms: Effect of Treatment Modality

Background: The estimates of recurrent intracranial hemorrhage in post hospitalization period among patients treated for ruptured intracranial aneurysms are not available outside clinical trials. Objective: To determine the rates of recurrent intracranial hemorrhage related hospitalization within 1 year post hospitalization for treatment of ruptured intracranial aneurysm in a nationwide cohort of patients admitted for subarachnoid hemorrhage (SAH). Methods: We identified all readmissions related to new SAH or intracerebral hemorrhage in the nationally representative data for all patients hospitalized for SAH using the Nationwide Readmissions Database (NRD) 2013 who had undergone endovascular or surgical treatment.. Cox proportional hazards analysis was used to assess the relative risk (RR) of recurrent intracranial hemorrhage for patients in treatment cohorts after adjusting for potential confounders. The 1-year survival was estimated for both treatment groups by using Kaplan-Meier survival method. Result...