An extracorporeal medical procedure is a medical procedure which is performed outside the body. Circulatory procedures A procedure in which blood is taken from a patient's circulation to have a process applied to it before it's returned to the circulation. All of the apparatus carrying the blood outside the body is termed the extracorporeal circuit.HemodialysisHemofiltrationPlasmapheresisApheresisExtracorporeal membrane oxygenation (ECMO)Cardiopulmonary bypass during open heart surgery. Other pr… (More on Extracorporeal)