Predictors and impact of massive bleeding in acute type A aortic dissection

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Aortic Dissection Research

Background:

• Bleeding complications are a significant concern in patients undergoing surgery for acute type A aortic dissection (aTAAD).
• Identifying predictors of massive bleeding is crucial for improving patient outcomes.

Purpose of the Study:

• To evaluate predictors of massive bleeding in patients with aTAAD.
• To assess the impact of massive bleeding on postoperative complications and survival rates.

Main Methods:

• Retrospective study of 256 patients with aTAAD.
• Massive bleeding defined using Blood Conservation Using Antifibrinolytics in a Randomized Trial (BART) criteria.
• Multivariable logistic regression and Cox regression analyses were employed to identify predictors of mortality.

Main Results:

• Shorter symptom duration and DeBakey type 1 dissection were independent predictors of massive bleeding.
• Patients experiencing massive bleeding had significantly higher in-hospital mortality (30.3% vs 8.0%) and poorer survival rates at 1, 3, and 5 years.
• Re-exploration for bleeding independently predicted both in-hospital and late mortality.

Conclusions:

• Massive bleeding in aTAAD is associated with shorter symptom duration and more extensive dissections (DeBakey type 1).
• Massive bleeding has detrimental effects on postoperative complications and significantly increases both in-hospital and long-term mortality.
• Early identification and management of bleeding risk factors are essential for improving outcomes in aTAAD patients.