In an Advance Directive, you express your wishes and directions concerning end of life situations where you are usually not able to make decisions due to your medical condition.
You name a health care representative to make health care decisions if you are not able to speak for yourself. Usually this will be your spouse, or one of your children.
Typical situations that are covered include terminal health conditions, advanced illness, and permanent unconsciousness.
In your Advance Directive, you can state whether or not you wish treatments to sustain your life such as feeding tubes, IV fluids, and breathing machines. You can also let your health care representative make such decisions for you.