ECMO Retrieval Program: What Have We Learned So Far

Area of Science:

• Cardiovascular Medicine
• Critical Care Medicine
• Extracorporeal Life Support

Background:

• Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is a critical intervention for cardiogenic shock and cardiac arrest.
• Survival rates for VA-ECMO patients remain suboptimal, necessitating further investigation into factors influencing outcomes.
• The impact of a specialized ECMO team's learning curve on patient outcomes is not well-defined.

Purpose of the Study:

• To evaluate the influence of a mobile ECMO program's learning curve on patient outcomes over a seven-year period.
• To analyze whether accumulated experience within the ECMO team correlates with improved patient survival and reduced morbidity.
• To identify key factors associated with VA-ECMO success and failure.

Main Methods:

• Retrospective analysis of 111 patients supported with VA-ECMO between January 2015 and December 2021.
• Patients were categorized into survival (n=70) and non-survival (n=41) groups.
• Comparison of complication rates, including thromboembolic events, hepatic and renal failure, dialysis, and SIRS, between the two groups.

Main Results:

• No significant improvement in mortality or morbidity rates was observed despite the ECMO team's growing experience.
• Non-survivors experienced significantly higher incidences of thromboembolic events, hepatic failure, renal failure, dialysis, and SIRS.
• Complication severity was notably greater in the non-survivor cohort.

Conclusions:

• Extensive experience within a mobile ECMO retrieval program did not lead to improved patient outcomes over seven years.
• High mortality and morbidity rates persist, underscoring the need for enhanced patient selection and stricter ECMO indication criteria.
• Future efforts should prioritize optimizing patient selection and refining indications for VA-ECMO therapy.