Choosing and preparing a health care proxy

An advance directive tells your loved ones and doctors what kind of medical care you want. It speaks for you when you cannot tell them yourself. That is NCI's description. It is a legal document, and it exists for one narrow but important moment. You cannot speak for yourself. A decision still has to be made.

NCI describes two main types.

A living will sets out whether you want life-sustaining treatments. These include ventilators, CPR or tube feeding. It can also record organ donation wishes.

A health care proxy names a trusted person to make medical decisions for you. It is created through a durable power of attorney for health care. NCI notes this person may be called a health care agent, a surrogate or a proxy. The name depends on where you are.

A living will can only cover the situations someone thought to write down. Real medical decisions arrive in unexpected forms. They come with details nobody predicted.

A proxy fills that gap. They answer the question the document did not think to ask. They do it using what they know about you.

A list of wishes covers the situations you imagined. A proxy covers the ones you did not.

NCI does not say who to appoint. But the shape of the role suggests what it asks for. The person needs to know your wishes well. They need to represent them faithfully. And they need to state them clearly in a hospital corridor at a hard hour.

Two things get mixed up here. One is who is closest to you. The other is who stays steady under pressure. Sometimes that is the same person. Sometimes it is not. Naming a sibling rather than a spouse is not an insult. It can be a kindness.

Talk to the person before naming them. Being appointed by surprise, in a crisis, is a hard thing to do to someone.

NCI's advice on timing is clear. Ideally you complete these documents while you are healthy. Do not wait for serious illness. Calm decisions are better decisions. They are also easier for everyone to trust later.

NCI's guidance on end-of-life care makes the same point from the other side. It stresses finishing advance directives before a person becomes too ill to take part.

You do not have to work this out alone. NCI suggests discussing your choices with your doctor, nurse or social worker. It also notes that most health care facilities help people complete the documents.

Rules vary by state. So a hospital social worker's local knowledge beats a generic form found online.

NCI describes the steps after signing:

• Review the documents with your health care team.
• Give copies to the people who may need them.
• Store them somewhere you can reach.

Picture a directive locked in a safe deposit box on a Sunday evening. It might as well not exist. Many people keep a medical folder for appointments. NCI's caregiver materials suggest one for test results and paperwork. Put a copy there too. Then it travels with you to hospital.

NCI lists real benefits to talking with loved ones about your wishes. Your preferences are more likely to be followed. Family members are reassured. And the weight of deciding alone is lifted from them.

That last benefit is the one families mention most often afterwards. Relatives asked to choose without guidance can carry doubt for years. Relatives carrying out a stated wish are doing something quite different. They know it, too.

NCI is clear on this point. You can change an advance directive at any time. Your situation may shift. So may your preferences. What you decide during a first course of treatment does not bind you two years later.

So check in now and then. Make sure the version on file at your hospital is the current one. This matters most after a big change in your treatment or in your family.