Final answer:
Under the HCCA, health care practitioners have no authority to make treatment decisions on behalf of clients, except in an emergency when no authorized person is available. They also have no power to make a decision to consent to the admission of a client to a care facility, except in a crisis.
Step-by-step explanation:
Under the Health Care Consent Act (HCCA), health care practitioners have no authority to make treatment decisions on behalf of clients, except in an emergency when no authorized person is available to make the decisions. Similarly, they have no power to make a decision to consent to the admission of a client to a care facility, except in a crisis.