"Carefully pull back the endoscope while I feed the wire. Don't pull, you ease it past any obstructions," I said. I watched as she pulled it back through the esophagus and out. Letting go of the wire, I picked up the feeding tube. A thin tube, it had a soft round bumper on the end. I hooked the wire through holes on the narrow end of the tube, twisting it and wrapping it with surgical tape. "Now for the fun part. Guide the tube into her mouth until it disappears." She helped guide it as I went down to the needle, pulling gently on the wire to bring the tube...