Extracorporeal Membrane Oxygenation-Supported Patient Outcome Undergoing Transcatheter Aortic Valve Replacement

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Critical Care Medicine

Background:

• Transcatheter aortic valve replacement (TAVR) is a key treatment for aortic stenosis.
• The role of extracorporeal membrane oxygenation (ECMO) in TAVR, particularly for high-risk patients, requires clarification.

Purpose of the Study:

• To compare the benefits and risks of ECMO support versus no ECMO during TAVR.
• To evaluate the impact of prophylactic versus emergent ECMO use in TAVR.

Main Methods:

• A meta-analysis of 11 observational studies involving 2,275 patients undergoing TAVR.
• Comparison of mortality, procedural success, and peri/postoperative complications between ECMO and non-ECMO groups.

Main Results:

• ECMO support was associated with higher unadjusted mortality (OR 1.73) and lower procedural success (OR 0.10).
• Prophylactic ECMO showed lower mortality than emergent ECMO (OR 0.17) but higher risk of bleeding, renal failure, myocardial infarction, and stroke.
• ECMO did not improve clinical outcomes in high-risk TAVR patients.

Conclusions:

• ECMO support increases mortality and postoperative complications in TAVR patients.
• Prophylactic ECMO may be superior to emergent ECMO in select high-risk TAVR scenarios.
• Further research is needed to optimize ECMO use in TAVR.