What is the downside of ECMO?

Can you explain what are the potential drawbacks or risks associated with undergoing Extracorporeal Membrane Oxygenation (ECMO) therapy? As a form of advanced life support, ECMO is used in critical situations to maintain adequate oxygenation and blood Flow to the body. However, it's a complex and invasive procedure that can carry significant side effects or complications. Understanding these potential downsides is crucial for patients and their families to make informed decisions.