(a) A physician shall have overall responsibility for the service. This physician shall be certified or eligible for certification in cardiovascular disease by the American Board of Internal Medicine. If such a cardiologist is not available, a physician certified or eligible for certification in internal medicine by the American Board of Internal Medicine, with training and experience in cardiovascular disease, may administer the service. In this circumstance, a cardiologist, qualified as above, shall provide consultation at such frequency as to assure high quality service. The physician in charge shall be responsible for:

(b) A registered nurse with training and experience in coronary care nursing shall be responsible for the nursing care and nursing management of the service.

(c) All licensed nurses shall have had training and experience in coronary care nursing.

(d) There shall be not less than two nursing personnel physically present in the coronary care unit when a patient is present. At least one of the nursing personnel shall be a registered nurse.

(e) The licensed nurse:patient ratio shall be 1:2 or fewer at all times. Licensed vocational nurses may constitute up to 50 percent of the licensed nurses.