There are so many reasons why post and late treatment causes nausea that a systematic approach to isolate the cause is necessary:
1. Stringy mucous in the main one. This should resolve itself on its own within 1-3 weeks post Tx. My strategy was to use pick magic first, then drink some lukewarm water. this would often break it up a little. Don't attempt feeding until he is awake for a bit,
2. Reaction to chemo is #2. Antiemetics may help
3. Gastrointestinal upset from Cisplatin (in particular) Pepcid AC or Famatodine
4. Constipation. Stoppage of homeostasis will definitely cause nausea. Stool softeners, fiber in diet - STAY HYDRATED
5. Reaction to other meds, especially narcotics.
6. Aspiration - this can happen if you swallow the "swish & spit" "Pink Magic".
7. Food cooking odors.
8, Psychosymatic anti-anxiety meds
9. Dehydration -STAY HYDRATED. (this should actually be between 3 and 4.
There are probably more.