This study consists in an cluster-randomized clinical trial involving near 60 Brazilian intensive care units (ICUs) with a high notification rate of potential donors of organs and tissues. ICUs will be randomized in a 1:1 ratio to manage potential organ donors through the use of a evidence-based checklist or to manage potential organ donors according usual care. The primary outcome is the rate of losses of potential donors due to cardiac arrest. Secondary outcome measures include number of effective organ donors, number of organs recovery per effective donor and total number of cardiac arrest among all potential donors.