For the Want of a Nail - S6-E9
Continuity mistake: In a previous scene Dr. Choi had asked that a patient using a nasal oxygen cannula be given an oxygen mask, which the nurse did (over the cannula, but that is another mistake previously documented). Several scenes later we see that patient again, and he is back to wearing the nasal cannula and having breathing difficulties.
Answer: That's a tracheal tube. Most people can talk perfectly normal with tracheal tubes. Check out Mattie Stepanek for one of the most famous examples. He had a tracheal tube for most of his life and never had problems with speech.
Got it. Many thanks.
toroscan