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Olfactory Dysfunction in COVID-19 Patients Who Do Not Report Olfactory Symptoms: A Pilot Study with Some Suggestions for Dentists.

Authors :
Favero R
Hajrulla S
Bordin A
Mucignat-Caretta C
Gaudioso P
Scarpa B
Favero L
Ottaviano G
Source :
International journal of environmental research and public health [Int J Environ Res Public Health] 2022 Jan 18; Vol. 19 (3). Date of Electronic Publication: 2022 Jan 18.
Publication Year :
2022

Abstract

Background: Smell and taste dysfunction are frequently reported by SARS-CoV-2 positive patients. The degree of olfactory and gustatory dysfunction varies from a very mild reduction to their complete loss. Several studies have been performed to determine their prevalence in COVID-19 patients, mostly using subjective measurement methods. The literature lacks long-term studies regarding duration and recovery.<br />Methods: We assessed olfactory performance, using the Sniffin' Sticks olfactory test, in a group of patients who had not reported olfactory dysfunction, around 131 days after their COVID-19 diagnosis.<br />Results: 11 out of 20 subjects showed no olfactory reduction (65%), while 9 subjects showed reduced TDI score (45%). A total of 13 subjects (65%) scored above the cutoff point for Threshold, 16 subjects (80%) scored above the cutoff point for discrimination and 13 subjects (65%) scored above the cutoff point for identification.<br />Conclusion: Objective measurement methods of olfactory performance show a higher prevalence of olfactory reduction compared to patients' self-reported questionnaires. Olfactory dysfunction can last even months after its onset and because of its high prevalence, it could be a screening symptom for suspect COVID-19 cases.

Details

Language :
English
ISSN :
1660-4601
Volume :
19
Issue :
3
Database :
MEDLINE
Journal :
International journal of environmental research and public health
Publication Type :
Academic Journal
Accession number :
35162061
Full Text :
https://doi.org/10.3390/ijerph19031036