Maastrichat classification category 3 stands for DCD donor of:
Ref. Sabiston Textbook of Surgery. Pg. 877
 
MAASTRICHAAT CLASSIFICATION OF NHBD
Category 1 : Dead on arrival at hospital
Category 2 : Death with unsuccessful resuscitation .
Category 3 : Awaiting cardiac death .
Category 4 : Cardiac arrest while brain dead .
Brought dead patient
Cardiac arrest during brain dead
Awaiting cardiac death after withdrawal of supports
Cardiac arrest and unsuccessful resuscitation in hospital