<prompt> according to maastricht classification category 3 is ?dead on arrival to hospitalresuscitation attempted with out successawaiting cardiac arrest after withdrawal of suppocadiac arrest while brain dead  <response>: Category Features Alternative categories 1 Dead upon arrival, accident and emergency Uncontrolled 2 Resuscitation attempted without success, accident and emergency Uncontrolled 3 Awaiting cardiac death, intensive care Controlled 4 Cardiac arrest while brain dead, intensive care Controlled ref : bailey and love 27th ed 