My wife is an advocate, but she's also a retired RN, so she's pretty keenly an advocate of nurses/nursing generally--and particularly with the nursing staff at Roswell Park in Buffalo, which has well-deserved honors and ranking nationally. When I returned to coherency early today she explained the rationale behind our nurse's treatment strategy, including the realization that the potassium issue and the associated fact that I cannot swallow anything, even water, from esophagus to stomach, meant that dehydration was a real concern and almost certainly contributed to my first treatment reaction. So the second was preceded with an H2O feed among other things and the procedure was a success.