Incomplete and late recovery of sudden olfactory dysfunction in COVID-19
Data
2020Autor
Macoto Kosugi, Eduardo
Lavinsky, Joel
Ricci Romano, Fabrizio
Fornazieri, Marco Aurélio
Ricci Luz-Matsumoto, Gabriela
Miranda Lessa, Marcus
Piltcher, Otavio
Druck Sant’Anna, Geraldo
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Resumo
Introduction: Sudden olfactory dysfunction is a new symptom related to COVID-19, with little
data on its duration or recovery rate.
Objective: To characterize patients with sudden olfactory dysfunction during the COVID-19
pandemic, especially their recovery data.
Methods: An online survey was conducted by the Brazilian Society of Otorhinolaryngology and
Cervico-Facial Surgery, and Brazilian Academy of Rhinology, including doctors who assessed
sudden olfactory dysfunction patients starting after February 1st, 2020. Participants were posteriorly asked by e-mail to verify data on the recovery of sudden olfactory loss and test for
COVID-19 at the end of the data collection period.
Results: 253 sudden olfactory dysfunction patients were included, of which 59.1% were females
with median age of 36 years, with a median follow-up period of 31 days. 183 patients (72.3%)
had been tested for COVID-19, and of those 145 (79.2%) tested positive. Patients that tested
positive for COVID-19 more frequently showed non-specific inflammatory symptoms (89.7% vs.
73.7%; p = 0.02), a lower rate of total recovery of sudden olfactory dysfunction (52.6% vs. 70.3%;
p = 0.05) and a longer duration to achieve total recovery (15 days vs. 10 days; p = 0.0006) than the
ones who tested negative for COVID-19. Considering only positive-COVID-19 patients, individuals
with sudden hyposmia completely recovered more often than the ones with sudden anosmia
(68.4% vs. 50.0%; p = 0.04).
Palabras clave
COVID-19; Anosmia; Olfactory disordersLink para o recurso
https://doi.org/10.1016/j.bjorl.2020.05.001Collections
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