We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of olfactory bulb atrophy on the success of olfactory training.
- Authors
Ku, Ja Yoon; Lee, Min Kyoung; Choi, Woo Ri; Lee, Jeong Hyun; Kim, Ji Heui
- Abstract
Purpose: To evaluate the success of olfactory training in patients with olfactory loss and olfactory bulb (OB) atrophy detected on magnetic resonance imaging (MRI) and other characteristics. Methods: This study included 48 patients with olfactory loss who underwent a nasal endoscopic examination and MRI before olfactory training. The Korean Version of the Sniffin' Sticks Test was performed before and after training. The olfactory training success was defined as an improvement of more than 6 points in the Threshold-Discrimination-Identification (TDI) score. Patient characteristics and OB atrophy pre-training were compared between successful and unsuccessful groups. Results: The etiology of olfactory loss included respiratory viral infection in 30 (62.5%), trauma in 10 (20.8%), and idiopathic loss in 8 (16.7%) patients. Twenty-three (47.9%) of 48 patients exhibited successful olfactory training. Etiology, age, gender, and symptom duration were not different between unsuccessful and successful groups. Pre-training discrimination, identification, and TDI scores were significantly different between unsuccessful and successful groups (P < 0.05). Success rate of patients with bilateral OB atrophy was significantly lower than that of patients with unilateral OB atrophy and normal morphology (P = 0.006). OB height was significantly lower in the unsuccessful group than in the successful group (P < 0.05). Bilateral OB atrophy was an independent risk factor for failure of olfactory training according to the multivariate analysis. Conclusion: Olfactory loss patients with bilateral OB atrophy may not be able to improve olfactory function after olfactory training.
- Subjects
OLFACTORY bulb; ATROPHY; MAGNETIC resonance imaging; OLFACTORY training
- Publication
European Archives of Oto-Rhino-Laryngology, 2022, Vol 279, Issue 3, p1383
- ISSN
0937-4477
- Publication type
Article
- DOI
10.1007/s00405-021-06917-z