A double‐blind randomised controlled trial assessing the efficacy of topical lidocaine in extended flexible endoscopic nasal examinations

Abstract

After a rinse with oral mouthwash, the use of lidocaine results in a significant reduction in the discomfort associated with an extended bilateral flexible endoscopic nasal examination. Patients undergoing such an examination would benefit from the application of lidocaine after masking the negative flavour using oral mouthwash.