With cancer patients yes you are correct. When they are nearing death they aspirate food, and thus in that event a feeding tube is NOT a good idea. BUT TERRI WAS NOT DYING.
Feeding tubes, do not even require electricity and are not modern technolgy in the same sense that heart and lung machines are. Believe it or not the earliest feeding tubes existed in Egyptian times. They were used with some regularity in the civil war, and their last innovation was in the late 70's, early 80's.
Folks who want to see a larger view of this feeding tube can click on this picture Other images of specialized clothing available at The Bundi-baby e-store