In clinical ethics, one must first and foremost—this is what they teach in medical school—use inductive reasoning for decisions made at the bedside. One can't apply an evaluation grid at the bedside, but must rather try to see what comes out, that is, listen to what the patient has to say, listen to the patient's wishes, and hear how the patient is suffering.
Wouldn't this approach, coupled with an assessment considering all the criteria, provide a safeguard and quite safely permit this practice?