3.1
Normothermic extracorporeal preservation aims to keep the donor's heart beating outside the body, using a perfusion machine that delivers warm oxygenated blood supplemented with catecholamine, nutrients and electrolytes. This technique aims to decrease the amount of damage that occurs to the heart after removal, by reducing the rate of tissue deterioration compared with conventional cold ischaemic storage. The aim is to improve clinical outcomes for the recipient. The technique was initially used to preserve hearts donated after brainstem death, but has recently been adapted to preserve hearts donated after circulatory death (death that has been diagnosed and confirmed using cardio‑respiratory criteria). This overview considers only normothermic extracorporeal preservation of hearts donated after brainstem death.