Population-based incidence and outcomes of acute aortic dissection in Japan

Abstract Aims The population-based incidence and outcomes of acute aortic dissection (AAD) are still unknown because some patients already dead on arrival, the accurate diagnosis AAD is difficult due to low autopsy rate. We performed a review all with in well-defined geographical area Japan between 2016 2018. Methods results Data at Miyazaki Prefectural Nobeoka Hospital (MPNH), which performs medical care for 120 000 residents, were collected retrospectively. emergency service dedicated transfer this MPNH. For who was made by imaging (AI) using computed tomography. age-adjusted mortality per 100 population calculated Japanese distribution model 2015. total 79 (type A: 64.5%, n = 51). Of those, 60.8% (31/51) type A 21.4% (6/28) B arrival diagnosed AI. 30-day rates 74.5% (38/51) 25.0% (7/28) B. inhabitants 17.6 11.3, B: 6.2) 9.9 8.4, 1.5), respectively. Conclusions survey showed that two-fold higher than previous reports, actual markedly high dead-on-arrival.