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. 2021 May 27;16:146. doi: 10.1186/s13019-021-01529-4

Fig. 1.

Fig. 1

Flow chart. Two hundred and twenty-one patients with acute type A aortic dissection who underwent open surgical repair combined with triple-branched stent graft implantation were selected from 260 patients based on the exclusion criteria, and they were divided into two groups: patients with POD (n = 31) and patients without POD (n = 190). Thirty-two patients were excluded from this study according to the exclusion criteria. AAD: acute type A aortic dissection; POD: postoperative delirium