Olfactory dysfunction in patients after recovering from COVID-19.

Abstract:

BACKGROUND:Smell and taste disorders occur in COVID-19 with a high prevalence, but little is known about the duration of the symptoms. In particular, studies using validated olfactory tests are very rare to date. AIMS/OBJECTIVES:The aim of this study was to determine the olfactory function of COVID-19 recoveries by a detailed olfactory test. METHODS:91 patients with PCR-confirmed, past COVID-19 disease were included. Olfactory history was taken using a questionnaire. Olfactory function was evaluated with the sniffin' sticks test, tasting function with taste sprays. RESULTS:80 patients had experienced sudden olfactory loss during the course of disease and at the time of testing, 33 patients subjectively still had an impaired olfactory sense. Around 8 weeks had passed since the onset of symptoms. 45.1% of the tested individuals were still hyposmic according to the olfactory test while 53.8% showed an olfactory performance within the normal range. Patients' self-assessment correlated poorly with the measured olfactory performance. CONCLUSIONS AND SIGNIFICANCE:Half of the patients with an olfactory loss as a symptom of COVID-19 still have olfactory impairments after two months, although not all of these patients subjectively notice a restriction. Long-term measurements must confirm whether all affected patients will make full recovery.

journal_name

Acta Otolaryngol

journal_title

Acta oto-laryngologica

authors

Otte MS,Eckel HNC,Poluschkin L,Klussmann JP,Luers JC

doi

10.1080/00016489.2020.1811999

subject

Has Abstract

pub_date

2020-12-01 00:00:00

pages

1032-1035

issue

12

eissn

0001-6489

issn

1651-2251

journal_volume

140

pub_type

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