Self-awareness of olfactory dysfunction in elderly individuals without neurodegenerative diseases.

Eur Arch Otorhinolaryngol

Department of Otolaryngology, Faculty of Medical Sciences, University of Campinas, R. Tessália Vieira de Camargo, 126, Cidade Universitária Zeferino Vaz, Campinas, São Paulo, 13083-887, Brazil.

Published: January 2023

AI Article Synopsis

  • The study investigates the prevalence of olfactory dysfunction among healthy elderly individuals visiting a hospital in Brazil, linking it to cognitive decline and potential neurodegenerative diseases.
  • It involved 103 participants aged 60 and over, who underwent a questionnaire, nasal examination, and smell tests, revealing that 15.5% reported smell issues while 66% showed actual impairment in olfactory function.
  • Despite various factors like gender, education, and lifestyle, these did not appear to affect the rate of olfactory dysfunction, indicating a significant risk of not recognizing their smell impairment among the elderly.

Article Abstract

Purpose: The decrease in smell in the elderly population is frequent and considered a natural process. However, sometimes it can be associated with the decline of cognitive functions, and it is considered a warning for the early stage of neurodegenerative diseases and social impairment.

Objective: To assess the prevalence of olfactory dysfunction in previous healthy elderly that attended a tertiary hospital in Brazil as escorts and the clinical alterations associated in this population.

Methods: Subjects 60 years or over attending the University Hospital of Campinas were evaluated. Each participant answered a questionnaire, followed by an otorhinolaryngological exam with flexible nasal endoscopy and the Connecticut smell test produced by the Connecticut Chemosensory Clinical Research Center (CCCRC). Elderly people with nasosinusal diseases or with a history of nasal surgery were excluded.

Results: Of the total of 103 participants, 16 (15.5%) reported olfactory complaints and 68 (66%) presented impairment in the olfactory test. It was observed that older individuals showed more changes in olfactory function (p = 0.001). Gender, education, lifestyle, comorbidities, medications in use and exposure to pollutants did not influence the impairment olfactory function of this population.

Conclusions: There is a significant prevalence of olfactory dysfunction in the elderly population evaluated. Most of these elderlies also present an inability to identify odours, not having awareness of this olfactory impairment.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9438353PMC
http://dx.doi.org/10.1007/s00405-022-07614-1DOI Listing

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