Dados do Trabalho

Título

Correlation of body mass index and oxygen desaturation index in the elderly

Introdução

Obstructive sleep apnea (OSA) is a condition whose prevalence is high worldwide, reaching up to 50% in some countries ( Bonsignore , et al. 2024). Among individuals over the age of 70, OSA may be related to reduced alertness, increased risk of falls and mortality ( Onen et al. 2022). These risks increase when this population is underdiagnosed, and developing assessment methods can be crucial in directing treatment among this population

Objetivo

Evaluate the correlation between body mass index (BMI) and cervical circumference, and the oxygenation desaturation index (IDO) among the elderly

Métodos

Descriptive cross-sectional study, carried out between January and July 2022, including individuals aged > 60 years, assisted in basic health units (UBS), evaluated using type IV polysomnography (Biologix®). To analyze the frequency distribution and association data, the chi -square test was used , the Mann-Whitney test was used to compare medians, and the Spearman test was used to correlate between variables. In all tests, p<0.05 was used. The study was approved by the Research Ethics Committee (CAAE:53050921.8.0000.5168) and the informed consent form was applied to the participants

Resultados

The sample consisted of 38 elderly people, with a median age of 68 years (63.5-70.0), with a prevalence of females (71%). When evaluating BMI, the median was 28 kg/m 2 , 17 (44.7%) were above 30 kg/m 2 , 10 (26.3%) with 25 to 29.9 kg/m 2 , 10 (26, 3%) 18.6 to 24.9 Kg/m 2 and 1 (2.6%) below 18.5 Kg/m 2 . The median cervical circumference found was 39.0 cm (36.3-41.8), with 38 cm being the median for females and 45 cm for males. The population presented an IDO of 10.6 events/hour in its median (4.4-21.8) indicating mild OSA in the studied population. The group of female individuals reached a median of 5.1 events/hour, represented as mild OSA and the male group 15.0 classified as moderate OSA. In the correlation analysis between BMI and ODI, a moderate correlation was observed (r:0.53) and, when observing the correlation between age and cervical circumference, strong parallelism was observed (r:0.78), indicating that the greater the age and cervical circumference, the greater the risk for OSA

Conclusões

BMI and high neck circumference among elderly individuals present a moderate and strong correlation, respectively, with ODI

Palavras -chave

Sleep Apnea; Sleep; Body Mass Index; Elderly