[MSB-14] Validation of the German Registry for Acute Aortic Dissection Type A Score After Aortic Dissection Surgery

Objective: This study aimed to evaluate how the German Registry of Acute Aortic Dissection Type A (GERAADA) score performs in predicting operative mortality for ATAAD. Methods: This retrospective study included 86 consecutive patients (60 males, 26 females; mean age: 61.37±12.96 years) who underwent surgical repair for ATAAD between January 2013 and December 2023. Data collection comprised the 11 preoperative main parameters required for calculation of the new GERAADA score: age, sex, previous cardiac surgery, inotropic support at referral, resuscitation before surgery, aortic regurgitation, hemiparesis, intubation/ ventilation at referral, preoperative organ malperfusion, extension of aortic dissection, and location of primary entry site. Results: Two (2.3%) patients had a history of previous cardiac surgery. The GERAADA scores and postoperative results were compared. The overall 30-day mortality for the entire study cohort was calculated by the GERAADA score to be 22.94% (range, 5.8 to 81%). In comparison, the actual 30-day mortality rate of the study cohort was 32.55%. The GERAADA score showed discriminative power with an area under the curve of 0.867 (95% confidence interval 0.79–0.94). Conclusion: The GERAADA score prediction of 30-day mortality after surgery is accurate, easily accessible due to its web-based platform, and can be calculated with basic preoperative clinical parameters.