3. Criteria for determining irreversible cessation of all functions of the brain

Subject to regulation 3A, the criteria for determining the irreversible cessation of all functions of the brain of a person for the purposes of section 2A of the Act shall be that —

the pupils are fixed and non-reactive to strong light;

there is no corneal reflex;

there is no spontaneous motor response to painful stimulus, excluding spinal reflexes;

there is no oculocephalic reflex;

there is no gag reflex or reflex response to tracheobronchial stimulation;

there is no vestibulo-ocular response on instillation of 50 cubic centimetres of ice-cold water into each ear; and

there is no spontaneous respiration even with carbon dioxide tension at 50 millimetres or more of mercury.