The Pope's Wishes

This excerpt from an AP article discussing JPII's illness. One doctor stated that he has a 10-20% chance of recovering from sepsis. There are also reports that he has slipped into a coma:

It is not clear who would be empowered to make medical decisions for an unconscious pope. The Vatican has officially declined to comment whether John Paul has left written instructions.

Am I missing something? I thought that the conservatives who champion the Pope's earlier statements on death and dying (see section 3 of my previous post) would say that it is always necessary to keep a ventilator and nutrition for a comatose patient. Isn't that what the Terry Schiavo debate has been about amongst Catholic theologians?

So, sorry John Paul, you don't get to leave written instructions. I guess unless you leave them as a papal decree. That is, only the pope gets to make end of life decisions for himself. Everyone else is SOL.