(1)Sections 57 and 58 above shall not apply to any treatment—
(a)which is immediately necessary to save the patient’s life;
(b)which (not being irreversible) is immediately necessary to prevent a serious deterioration of his condition; or
(c)which (not being irreversible or hazardous) is immediately necessary to alleviate serious suffering by the patient; or
(d)which (not being irreversible or hazardous) is immediately necessary and represents the minimum interference necessary to prevent the patient from behaving violently or being a danger to himself or to others.
(2)Sections 60 and 61(3) above shall not preclude the continuation of any treatment or of treatment under any plan pending compliance with section 57 or 58 above if the responsible medical officer considers that the discontinuance of the treatment or of treatment under the plan would cause serious suffering to the patient.
(3)For the purposes of this section treatment is irreversible if it has unfavourable irreversible physical or psychological consequences and hazardous if it entails significant physical hazard.