Presenting the current status of patient outcomes with acute type A aortic dissection in Japan. The Japanese Association for Thoracic Surgery (JATS), Japanese Registry of All cardiac and Vascular Disease (JROAD), Japan Registry of Acute Aortic Dissection (JRAD), Japan Cardiovascular Surgery Database (JCVSD), National Clinical Database (NCD), The Tokyo acute aortic super network, and J-Open caRdiac aortic arCH DisEase replacement Surgical TheRApy (J-ORCHESTRA) database were used. The incidence of AAD ranged from 10 to 20 per 100,000 population. Thirty percent of patients were older than 70 years. Malperfusion syndrome or ruptured aorta was found in 10–20%. Over 90% of patients had surgery within 24-hour after diagnosis. The mortality tended to be higher in the super-acute phases from onset to surgical treatment. Acute organ malperfusion requires an accurate and prompt diagnosis to proceed with an appropriate intervention before repairing the central aorta. Antegrade cerebral perfusion was used in 70–80% and deep hypothermic circulatory arrest with/without retrograde cerebral perfusion in 20–30%. High-moderate or mild hypothermia was applied in more than 50% of patients. Replacement of the ascending aorta was performed in 70% and total arch replacement in 30%. Treatment with frozen elephant trunk as well as thoracic endovascular aortic repair (TEVAR) has increased. The aortic valve was replaced in 8–10%. Thirty-day mortality was 9.0–10%. The number of operations has increased over time. Stroke occurred in 10–12%. Although the early outcomes are acceptable, there is still room to be improved in patients with preoperative comorbidities.
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