Abstract:
BACKGROUND:One of the major causes of olfactory disturbances is chronic rhinosinusitis (CRS), and the main surgical modality to treat CRS is functional endoscopic sinus surgery (FESS). It, therefore, is essential to assess the effect of this surgery on olfaction. Also, it is necessary to find new ways of measuring olfaction so as to reduce dependability on standard tests available. OBJECTIVES:To study the prevalence of olfactory impairment in patients with CRS and to evaluate the impact of FESS on olfaction. The study also aims at investigating the use of other odorants in place of butanol-1 in the Connecticut Chemosensory Clinical Research Center test. SUBJECTS AND METHODS:Forty patients of CRS without nasal polyposis were included in the study to analyze the prevalence of olfactory dysfunction and examine the influence of FESS at 1 and 3 months after surgery. Computed tomography scores (Lund Mackay scores) were calculated preoperatively, whereas other tests, viz., visual analog scale scoring, nasal endoscopy (Lund Kennedy scoring), and composite olfactory testing with odor thresholds of butanol-1, peppermint, lemon, clove, and ethyl acetate were carried out before surgery and after surgery at 1 and 3 months. RESULTS:Of 40 patients, 70% had symptoms of hyposmia or of anosmia before surgery, which dropped to 22.5% at 1 month after surgery and to 10% at 3 months after surgery. Nasal endoscopy and visual analog scale scores improved significantly. Odor threshold and odor identification scores also improved compared with the preoperative levels. A significant positive correlation was found between the threshold scores of butanol-1 and other odorants, both before and after surgery. CONCLUSION:Significant improvement was observed in olfaction after FESS, both in patient responses and in objective testing. The olfactory results with peppermint, lemon, clove, and ethyl acetate were close to those with butanol-1, and, hence, these other odorants can be used in place of butanol-1 in measuring the odor threshold.
journal_name
Am J Rhinol Allergyjournal_title
American journal of rhinology & allergyauthors
Gupta D,Gulati A,Singh I,Tekur Udoi
10.2500/ajra.2015.29.4207subject
Has Abstractpub_date
2015-07-01 00:00:00pages
e117-20issue
4eissn
1945-8924issn
1945-8932journal_volume
29pub_type
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