Ohio Rev. Code Ann. § 1337.13
(A)
(B)
(E) An attorney in fact under a durable power of attorney for health care does not have authority to refuse or withdraw informed consent to the provision of nutrition or hydration to the principal, unless the principal is in a terminal condition or in a permanently unconscious state and unless the following apply:
(2) If the principal is in a permanently unconscious state, the principal has authorized the attorney in fact to refuse or withdraw informed consent to the provision of nutrition or hydration to the principal when the principal is in a permanently unconscious state by doing both of the following in the durable power of attorney for health care:
(F) An attorney in fact under a durable power of attorney for health care does not have authority to withdraw informed consent to any health care to which the principal previously consented, unless at least one of the following applies: