Relação entre índice de distúrbio respiratório do sono e alterações de memória em pacientes submetidos a exame de polissonografia

Abstract

Objective: Evaluate the relation between sleep and sleepiness with memory complaints. Materials and methods: Patients submitted to polysomnography between May and September of 2022 who completed the QMPR questionnaire and the Epworth Scale to assess memory and daytime sleepiness, respectively. Data were entered into Excel spreadsheet and converted to file compatible with SPSS software. Results: The sample consisted of 101 subjects, 62% male, mean age of 46.7 years, 73.2% overweight, 54.5% with comorbidities and 51.5% with excessive sleepiness. There was a significant difference (p < 0.05) in sleep efficiency for the age and comorbidities groups, in latency to sleep between genders, in SWS sleep between genders and for the comorbidities group, and in RDI for the BMI and comorbidities groups. No correlation could be identified between RDI and memory, but correlations between REM sleep and sleep efficiency; RDI and REM sleep; RDI and N3; sleep efficiency and latency to sleep onset were statistically significant. It was found that older adults perform better on memory tests when TTS is longer than 300 minutes and that excessive daytime sleepiness is related to complaints of prospective, retrospective, and total memory. Conclusion: Elderly people with TTS longer than 300 minutes have better memory. Although a correlation between RDI and memory was not observed, a correlation between excessive daytime sleepiness - one of the main symptoms of patients with sleep disorders - and memory was verified.