associated with ruptured aortic aneurysms are associated with invasive therapies, with limited reports on the outcomes of patients who did not undergo such interventions.The purpose of this study was to clarify the clinical features, therapies, and outcomes of ruptured aortic aneurysms in patients after emergency transfer based on the Tokyo Acute Aortic Super Network (TAASN) registry database. Furthermore, we wanted to identify aneurysm site-specific therapies and outcomes and determine the clinical course of patients receiving conservative therapy.
Ruptured aortic aneurysms are a critical issue in emergency medicine, with reported mortality rates of 43-45%. 1 However, epidemiological data from an overview of ruptured aortic aneurysms from large-scale studies are scarce. Furthermore, the treatment and outcomes of ruptured aortic aneurysms vary markedly depending on their location. This trend has become especially evident with advances in stent grafting. However, data on aneurysm site-specific clinical features of ruptured aortic aneurysms are lacking. In addition, most of the documented outcomes