Objective To explore clinical diagnostic criterion of brain death. Methods Evaluation was made on 26 cases of brain death through routine check-up such as brain stem reflex, GCS, pupil dilatation and limbs reflex. Among whom apnea test was made in 10 cases and EEG-Holter monitoring in 5 cases.Different dose of 1 mg,2 mg,5 mg Atropine test in 21 cases of brain death were administered to compare with the result in another 15 cases of deep coma patients. Results The positive of apnea test has some relation ...