Riech- und Schmeckstörungen

Speth, Marlene M.; Speth, Ulrike Simone; Sedaghat, Ahmad R.; Hummel, Thomas

doi:10.1007/s00106-021-01132-y

Cited by 1 publication

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“…SARS-CoV-2 infection causes many symptoms, including olfactory and gustatory dysfunctions [ 1 , 2 , 3 ], mostly in women [ 1 , 4 , 5 , 6 ]. Acute olfactory disorders prevalence varies between 5.1% and 98% according to studies [ 4 , 5 , 7 ] but resolve spontaneously, totally, or partially, within 8 weeks for 83.2% of patients [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Correlations between Persistent Olfactory and Semantic Memory Disorders after SARS-CoV-2 Infection

et al. 2022

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Background: One of the main symptoms of COVID-19 is hyposmia or even anosmia. Olfactory identification is most often affected. In addition, some cognitive disorders tend to appear following the infection, particularly regarding executive functions, attention, and memory. Olfaction, and especially olfactory identification, is related to semantic memory which manages general knowledge about the world. The main objective of this study was to determine whether semantic memory is impaired in case of persistent post COVID-19 olfactory disorders. Methods: 84 patients (average age of 42.8 ± 13.6 years) with post COVID-19 olfactory loss were included after consulting to the ENT department. The clinical evaluation was carried out with the Pyramid and Palm Tree Test, the word-retrieval task from the Grémots, the Sniffin’ Sticks Test and the Computerised Olfactory Test for the Diagnosis of Alzheimer’s Disease. Results: Semantic memory was impaired in 20% (n = 17) of patients, especially in the 19–39 age-group. The olfactory threshold was only significantly correlated with the semantic memory scores. Conclusions: Similar to all cognitive disorders, semantic disorders can have a negative impact on quality of life if left untreated. It is essential to carry out specific assessments of post COVID-19 patients to accurately determine their disorders and to put in place the best possible rehabilitation, such as speech and language therapy, to avoid quality-of-life impairment.

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