Postoperative Extracorporeal Membrane Oxygenation Support for Acute Type A Aortic Dissection

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Critical Care Medicine

Background:

• Limited research exists on postoperative extracorporeal membrane oxygenation (ECMO) for acute type A aortic dissection (aTAAD).
• Identifying patients at risk for postoperative ECMO is crucial for managing aTAAD outcomes.

Purpose of the Study:

• To identify risk factors for postoperative ECMO requirement in aTAAD patients.
• To analyze the short-term and long-term outcomes of aTAAD patients who received postoperative ECMO versus those who did not.

Main Methods:

• Retrospective review of 162 consecutive aTAAD patients from January 2008 to December 2015.
• Analysis of patient data to determine risk factors for ECMO implantation.
• Comparison of outcomes between patients requiring and not requiring ECMO.

Main Results:

• Postoperative ECMO was used in 12.3% of patients, with significantly higher in-hospital mortality (65.0% vs 8.5%).
• Predictors for postoperative ECMO included preoperative hemodynamic instability, longer aortic cross-clamp time, and elevated postoperative peak creatinine kinase-MB.
• ECMO survivors were younger and required less blood transfusion; postdischarge survival was similar between groups.

Conclusions:

• Postoperative ECMO is a significant predictor of in-hospital mortality in aTAAD patients.
• aTAAD patients requiring ECMO who survive to discharge demonstrate long-term survival comparable to those not requiring ECMO support.