When to take a loved one off of life support?

When there is no chance of recovery. It can usually be determined fairly accurately when someone has no chance of recovery. What often helps is to ask yourself what the person would want if they could say. Would they want to be kept alive in the condition they are now? Most people would not want that.

Answer:

Many peopel have written out well defined conditions for the continuation/discontinuation of life support. This should be available through the health care or legal contact. Refer to it and follow the instructions.