ECMO or Extracorporeal Membrane Oxygenation is a life-saving medical procedure. It refers to the use of an extracorporeal circuit to oxygenate and remove carbon dioxide from the blood outside of the body. As it's a specific medical term, there aren't many synonyms for ECMO. However, some alternatives that are often used in medical literature include Extracorporeal Life Support (ECLS), Cardiopulmonary Bypass (CPB), Ventricular Assist Device (VAD), and Mechanical Circulatory Support (MCS). These terms are used interchangeably with ECMO for patients who require temporary life support due to acute cardiac or respiratory failure. Although the medical community relies heavily on ECMO to save lives, continued research and development are still being conducted to find more ways to help critically-ill patients.