Introduction: Acute aortic dissection Type A (AADA) is still associated with a high mortality rate and frequent postoperative complications. This study was designed to evaluate the risk factors for mortality in AADA patients.
Patients And Methods: This retrospective analysis included 344 consecutive patients who underwent surgery for AADA in moderate hypothermic circulatory arrest (20-24°C nasopharyngeal) between 2001 and 2016.
Results: The 30-day mortality rate was 18%. Nonsurvivors were significantly older (65.7 ± 12.0 years vs. 62.0 ± 12.5 years; = 0.034) with significantly higher Euro-score II [15.4% (6.6; 23.0) vs. 4.63% (2.78; 9.88); < 0.001)]. Intraoperatively, survivors had statistically shorter cardiopulmonary bypass times [163 (134; 206) vs. 198 min (150; 245); = 0.001]. However, the hypothermic circulatory arrest time was similar between both groups. Postoperatively, the incidence of acute kidney injury (AKI) (55.9 vs. 15.2%; < 0.001), stroke (27.9 vs. 12.1%; = 0.002) and sepsis (18.0 vs. 2.1%; < 0.001) were significantly higher among nonsurvivors. The multi-variable logistic regression confirmed that older age, previous cardiac surgery, preoperative cardiopulmonary resuscitation (CPR), blood transfusion and postoperative acute kidney injury (AKI) were independent risk factors for mortality.
Conclusion: Our analysis suggested that the reason for mortality was multifactorial, especially age, previous cardiac surgery, CPR, transfusion, as well as postoperative AKI were considered risk factors for mortality.
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