Md. Code, Health - General § 5–607

A health care provider may treat a patient who is incapable of making an informed decision, without consent, if:

(1) The treatment is of an emergency medical nature;

(2) A person who is authorized to give the consent is not available immediately; and

(3) The attending physician determines that:

(i) There is a substantial risk of death or immediate and serious harm to the patient; and

(ii) With a reasonable degree of medical certainty, the life or health of the patient would be affected adversely by delaying treatment to obtain consent.