Optimal duration of macrolide treatment for chronic sinusitis after endoscopic sinus surgery

Abstract

The objective is to determine the appropriate duration of postoperative macrolide therapy for chronic rhinosinusitis to obtain a favourable outcome with endoscopic sinus surgery (ESS). The effectiveness of postoperative macrolide treatment was examined in patients with chronic rhinosinusitis who underwent ESS, by comparing 3-month (44 patients) and 6-month administration (66 patients) of clarithromycin (CAM) (200mg/day). Evaluation was made based on subjective symptoms and endoscopic findings at 3, 6 and 12 months after surgery. Seventeen (3-month CAM group) and 22 (6-month CAM group) subjects were able to be followed up to 12 months after surgery. No difference in effectiveness was observed between the groups until 6 months after surgery, but the 6-month treatment group showed significantly higher disappearance rates and significantly lower visual analogue scale (VAS) scores in the subjective symptoms of rhinorrhea and postnasal drip at 12 months after surgery. The positive finding rate of postnasal drip by endoscopic examination was also significantly lower in the 6-month treatment group at 12 months after surgery. These changes over time indicated gradual deterioration after discontinuation of CAM treatment in the 3-month treatment group, whereas a small improvement was observed after discontinuation in the 6-month treatment group. The results indicate that chronic sinusitis patients with rhinorrhea or postnasal drip should be treated with macrolides for 6 months after surgery in order to improve the long-term outcome of endoscopic sinus surgery.