Group A: BNTI carried out using ETT without warming, and Group B: BNTI carried out using ETT, warmed and softened with water at 50C for 5 minutes.
BNTI is recommended in the management of a difficult airway11.
In our study, the success rate for BNTI in the group "B" was significantly more than in group "A" for the first two attempts.
Failure in BNTI in our study, despite using muscle relaxants,could possibly be owing to the subsequent facts: Firstly, we tried intubating the trachea with two or lesser attempts while the previous investigators had attempted BNTI up to five times.
Nevertheless, we believe that the advantages (such as non-traumatized airway tissue and increased ease of nasal passage) outweighs the potential risk of kinking and therefore warming the ETT for BNTI must be considered.