it is my understanding that a medical poa only goes into effect when the individual is incapacitated to the point where they cannot make rational decisions. if your father is of sound mind, the medical poa is not in effect and your sisters have no say.one question: why would a physician give an order for haldol upon your simply your sisters' request/insistence? wouldn't your mother's nurse not intervene and decline the use of a chemical restraint that is not warranted?
from mayo clinic: ( www.mayoclinic.com/health/living-wills/ha00014
"medical or health care power of attorney (poa).
the medical poa is a legal document that designates an individual — referred to as your health care agent or proxy — to make medical decisions for you in the event that you're unable to do so. however, it is different from a power of attorney authorizing someone to make financial transactions for you."
if you are capable, the medical poa is not in effect. there is nothing for your father to revoke if he is now competent.
a medical care power of attorney
is a document that appoints someone else to make decisions regarding your medical care. another name for this document is called durable power of attorney for health care
. you should know the law regarding this document because of its importance...your medical power of attorney is indefinite unless it has a specific termination date, you revoke it or you become reasonably healthy." ( http://elder-law.lawyers.com/health-...-attorney.html
) (emphasis added in red)
another resource: http://www.dementiacaregiving101.com...-attorney.html
good luck. perhaps an attorney or mediation may be needed. but if you father is competent, there is no reason that your sisters' poa is in effect. generally spouse trumps poa in many states so you father would have a say on your mother's treatment/placement, but you would need to speak with an attorney or perhaps the senior services department/ombudsman in your state.