Jamie R Litvack1, Jess Mace, Timothy L Smith. 1. Division of Rhinology and Sinus Surgery, Oregon Sinus Center, Department of Otolaryngology-Head and Neck Surgery, Oregon Health and Science University, Portland, OR 97239, USA.
Abstract
OBJECTIVE: To examine the impact of endoscopic sinus surgery (ESS) on olfactory impairment in patients with chronic rhinosinusitis (CRS) over intermediate and long-term follow-up. We hypothesized that patients with mild olfactory dysfunction (hyposmia) would benefit from ESS, whereas patients with severe olfactory dysfunction (anosmia) would not. STUDY DESIGN: Prospective, multi-institutional cohort study. SUBJECTS AND METHODS: A total of 111 patients presenting for ESS for treatment of CRS were examined preoperatively, and at 6 and 12 months postoperatively. Demographic, comorbidity, and Smell Identification Test (SIT) data were collected at each time point. Univariate and multivariate analyses were performed. RESULTS: The prevalence of gender-adjusted olfactory dysfunction prior to surgery was 67.5 percent. Surprisingly, hyposmic patients did not significantly improve after surgery. In contrast, patients with anosmia significantly improved after ESS (baseline, 6-month SIT scores: 9.7 +/- 2.0, 21.3 +/- 11.2; P = 0.001). Improvement was sustained at 12-month follow-up (21.7 +/- 10.7; P = 0.001). Multivariate linear regression analysis showed that baseline olfactory category and nasal polyposis were significantly associated with improvement in postoperative olfactory function (P = 0.035, P = 0.002). CONCLUSION: Contrary to our hypotheses, patients with severe olfactory dysfunction significantly improved after ESS and sustained improvement over time, whereas patients with mild olfactory dysfunction did not.
OBJECTIVE: To examine the impact of endoscopic sinus surgery (ESS) on olfactory impairment in patients with chronic rhinosinusitis (CRS) over intermediate and long-term follow-up. We hypothesized that patients with mild olfactory dysfunction (hyposmia) would benefit from ESS, whereas patients with severe olfactory dysfunction (anosmia) would not. STUDY DESIGN: Prospective, multi-institutional cohort study. SUBJECTS AND METHODS: A total of 111 patients presenting for ESS for treatment of CRS were examined preoperatively, and at 6 and 12 months postoperatively. Demographic, comorbidity, and Smell Identification Test (SIT) data were collected at each time point. Univariate and multivariate analyses were performed. RESULTS: The prevalence of gender-adjusted olfactory dysfunction prior to surgery was 67.5 percent. Surprisingly, hyposmic patients did not significantly improve after surgery. In contrast, patients with anosmia significantly improved after ESS (baseline, 6-month SIT scores: 9.7 +/- 2.0, 21.3 +/- 11.2; P = 0.001). Improvement was sustained at 12-month follow-up (21.7 +/- 10.7; P = 0.001). Multivariate linear regression analysis showed that baseline olfactory category and nasal polyposis were significantly associated with improvement in postoperative olfactory function (P = 0.035, P = 0.002). CONCLUSION: Contrary to our hypotheses, patients with severe olfactory dysfunction significantly improved after ESS and sustained improvement over time, whereas patients with mild olfactory dysfunction did not.
Authors: Richard M Rosenfeld; David Andes; Neil Bhattacharyya; Dickson Cheung; Steven Eisenberg; Theodore G Ganiats; Andrea Gelzer; Daniel Hamilos; Richard C Haydon; Patricia A Hudgins; Stacie Jones; Helene J Krouse; Lawrence H Lee; Martin C Mahoney; Bradley F Marple; Col John P Mitchell; Robert Nathan; Richard N Shiffman; Timothy L Smith; David L Witsell Journal: Otolaryngol Head Neck Surg Date: 2007-09 Impact factor: 3.497
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