From reading your signature, your father had three rounds of radiation, which included IORT, plus a flap, which I had in a different location, and is like 3x the dosage in IMRT, so can see how this impacts his swallowing capability. As far as aspiration, everyone offered very good reasons, and understand your concern for this infection to go systemic, which happened to me, including c-diff, and seems like the priority right now. I was hospitalized, don't recall everything done, but was given IV antibiotics, plus was NPO for a while, meaning no food or liquids by mouth, and had no peg tube in the beginning, was suctioned, etc. They did use my port to give TPN feedings at some point. As mentioned, I would go to the ER, if needed.

Good luck with everything.