Multidisciplinary standardized care for acute aortic dissection: design and initial outcomes of a regional care model.

Patients with acute aortic dissection (AAD) have an in-hospital mortality of 26%, and for those patients with type A AAD, the mortality risk is 1% to 2% per hour until emergency surgical repair is performed.1,2 It is therefore critical that AAD be recognized promptly and that surgical care be provided expeditiously. Data from the International Registry of Acute Aortic Dissection (IRAD) indicate that the median time from emergency department (ED) presentation to definitive diagnosis of AAD is 4.3 hours, with an additional 4 hours between diagnosis and surgical intervention for type A patients.2,3 A portion of the delay to surgery is often the result of the patient’s presenting to smaller community hospitals underequipped to manage emergent AAD. Transfer to high-volume aortic care centers with highly specialized facilities and expertise is routine, but even at such centers, current surgical mortality is 25%.4