A medical or health care power of attorney is a type of advance directive in which you name a person to make decisions for you when you are unable to do so. In some states this directive may also be called a durable power of attorney for health care or a health care proxy.
A medical power of attorney is a legal document that names one person the health care agent of another person. The agent has the ability to make health care decisions and the responsibility to make sure doctors and other medical personnel provide necessary and appropriate care according to the patient's wishes.
You cannot give an attorney the power to: act in a way or make a decision that you cannot normally do yourself – for example, anything outside the law. consent to a deprivation of liberty being imposed on you, without a court order.
Registration of power of attorney is optional In India, where the 'Registration Act, 1908', is in force, the Power of Attorney should be authenticated by a Sub-Registrar only, otherwise it must be properly notarized by the notary especially where in case power to sell land is granted to the agent.