I had a patient recently that was supposed to go for a procedure in the morning. He was getting O2 and the setup was 4L O2 with FiO2 at 28%. He had a trach so he was receiving O2 via a T-Piece and was connected to a nebulizer. The Dr. didn't want him to go for the procedure because "he was on 4L O2." But if the FiO2 was at 28%, was he really getting 4L O2?
If we were to compare this to a patient on nasal canula, what would it be equivalent to? Maybe 2L O2 nasal canula?
Thanks for your help.