Heart, Lung and Circulation

Influence of Dynamic and Static Obstructive Renal Artery on Early Prognosis in Stanford Type A Aortic Dissection

Published:January 21, 2022DOI:


      Acute kidney injury (AKI) after acute Stanford type A aortic dissection (STAAD) surgery has a high mortality rate. Clarifying what type of renal artery problem (dynamic obstructive renal artery, DORA, or static obstructive renal artery, SORA) secondary to STAAD benefits from true lumen opening is helpful in providing a reference for the indication of renal artery intervention.


      From May 2018 to December 2019, 292 acute STAAD patients who underwent aortic surgery were enrolled in this study. DORA, SORA, and renal malperfusion were diagnosed according to preoperative aortic enhanced computed tomography (CTA). Renal artery problems secondary to STAAD were divided into three types: type 1, normal renal artery; type 2, DORA; and type 3, SORA. Acute kidney injury was divided into three stages: Stage 1, Stage 2, and Stage 3, according to 2012 Kidney Disease: Improving Global Outcomes (KDIGO). The primary endpoint was all-cause 30-day in-hospital death, and the secondary endpoint was postoperative dialysis requirement. Univariate and multivariate analyses were performed to assess the difference among the three types.


      Postoperative AKI occurred in 154 of 292 (52.7%) patients, and postoperative dialysis was present in 27 of 292 (9.2%) patients with STAAD. Postoperative AKI and dialysis were significantly more prevalent in the SORA group (AKI: 71% in SORA group vs 51.5% in DORA group vs 22.2% in normal group; postoperative dialysis: 22.2% in SORA group vs 5.4% in DORA group vs 6.1 in normal group). Thirty-day (30-day) mortality was also significantly higher in the SORA group (Log-rank test, p=0.012). Preoperative acute myocardial infarction and body mass index were the independent risk factors for 30-day mortality. Static obstructive renal artery, cardiopulmonary bypass time, and renal blood cell transfusion >3 units were the independent risk factors for postoperative dialysis requirement.


      Static obstructive renal artery led to higher 30-day in-hospital mortality and more postoperative dialysis. Open surgery reduced renal ischaemia injury caused by DORA, but it could not reduce renal ischaemia injury caused by SORA.


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