ECMO is a method of extracorporeal membrane oxygenation, using a circulatory system to perform oxygen exchange outside the body to support and maintain vital functions in patients with severe circulatory or respiratory failure.

Extracorporeal membrane oxygenation (ECMO) or extracorporeal life support (ECLS) is a method of supporting circulation and breathing when the heart or lungs or both cannot function normally. This method helps replace the heart or lungs or both for a short time.