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Diagnostic accuracy of oximetry for obstructive sleep apnea: a study on older adults in a home setting
Rosa, João Carlos Fraga da; Peres, Alessandra; Gasperin Júnior, Luciano; Martinez, Denis; Fontanella, Vania.
  • Rosa, João Carlos Fraga da; Universidade Federal de Ciencias da Saude de Porto Alegre. Porto Alegre. BR
  • Peres, Alessandra; Universidade Federal de Ciencias da Saude de Porto Alegre. Porto Alegre. BR
  • Gasperin Júnior, Luciano; Universidade Federal do Rio Grande do Sul. Porto Alegre. BR
  • Martinez, Denis; Universidade Federal do Rio Grande do Sul. Porto Alegre. BR
  • Fontanella, Vania; Universidade Federal do Rio Grande do Sul. Porto Alegre. BR
Clinics ; 76: e3056, 2021. tab, graf
Article in English | LILACS | ID: biblio-1339714
ABSTRACT

OBJECTIVES:

Owing to the fact that obstructive sleep apnea (OSA) is an underreported disease, the strategy used for the diagnosis of OSA has been extensively dissected to devise a simplified process that can be accessed by the public health services. Polysomnography (PSG) type I, the gold standard for the diagnosis of OSA, is expensive and difficult to access by low-income populations. In this study, we aimed to verify the accuracy of the oxyhemoglobin desaturation index (ODI) in comparison to the apnea-hypopnea index (AHI) using a portable monitor.

METHODS:

We evaluated 94 type III PSG home test results of 65 elderly patients (69.21±6.94 years old), along with information, such as the body mass index (BMI) and sex, using data obtained from a clinical trial database.

RESULTS:

A significant linear positive correlation (r=0.93, p<0.05) was observed between ODI and AHI, without any interference from sex, BMI, and positional component. The sensitivity of ODI compared to that of AHI increased with an increase in the severity of OSA, while the specificity of ODI in comparison to that of AHI was high for all degrees of severity. The accuracy of ODI was 80.7% for distinguishing between patients with mild and moderate apnea and 84.4% for distinguishing between patients with moderate and severe apnea.

CONCLUSION:

The ODI values obtained in uncontrolled conditions exhibited high sensitivity for identifying severe apnea compared to the AHI values, and correctly identified the severity of OSA in more than 80% of the cases. Thus, oximetry is promising strategy for diagnosing OSA.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Sleep Apnea, Obstructive Type of study: Diagnostic study / Prognostic study Limits: Aged / Humans Language: English Journal: Clinics Journal subject: Medicine Year: 2021 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de Ciencias da Saude de Porto Alegre/BR / Universidade Federal do Rio Grande do Sul/BR

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Full text: Available Index: LILACS (Americas) Main subject: Sleep Apnea, Obstructive Type of study: Diagnostic study / Prognostic study Limits: Aged / Humans Language: English Journal: Clinics Journal subject: Medicine Year: 2021 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de Ciencias da Saude de Porto Alegre/BR / Universidade Federal do Rio Grande do Sul/BR