Effects of Intranasal Steroid Spray in Bacterial Culture of Chronic Rhinosinusitis

Abstract

Background We attempted to determine whether use of a topical intranasal corticosteroid (INCS) preoperatively had an effect on bacterial culture and antibiotic sensitivity in chronic rhinosinusitis with nasal polyposis. Methods In a prospective study, patients that were diagnosed with rhinosinusitis with nasal polyposis received INCS for one month before functional endoscopic sinus surgery. Bacterial culture testing, obtained under telescope from a source near the middle meatus, was performed before and after INCS. Antibiotic sensitivity was also performed. Results One hundred fifty-six patients were enrolled in the prospective study, and 115 patients completed the procedures. The male-to-female ratio was 83:32 and the age range was 14∼76 years (46.7 ± 2.1). The positive culture rates were 80.9% and 79.1% pre-INCS treatment and post-INCS treatment, respectively. There was no significant difference between pretreatment and posttreatment samples in bacterial culture rate. The single bacterial culture rates were 66.7% and 65.9% pre-INCS treatment and post-INCS treatment, respectively. The drug sensitivities to oxacillin and cephaxolin showed no significant difference in coagulase negative Staphylococcus and Staphylococcus aureus. Conclusion INCS did not influence the rate of bacterial culture or antibiotic sensitivity in patients with chronic rhinosinusitis with nasal polyps.