Comparison of sinus distribution between nasal irrigation and nasal spray using fluorescein-labelled in patients with chronic rhinosinusitis: A randomised clinical trial.

Objective: This study aims to compare the potential sinus distribution between high-volume nasal irrigation and nasal spray in chronic rhinosinusitis (CRS) patients who have not undergone sinus surgery.

Design And Setting: A randomised clinical study was conducted at the Otolaryngology-Head & Neck Surgery Department, Ramathibodi Hospital, Faculty of Medicine, Mahidol University.

Participants: Forty patients undergoing endoscopic sinus surgery (ESS) for CRS.