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Epidemiological population profile with obstructive sleep apnea diagnosis at a tertiary care center in Porto Alegre.
The hypopnea syndrome and the obstructive sleep apnea, which definition is the presence of an apnea-hypopnea index (AHI) bigger than five events per hour, is a sleep breathing disorder that affects about 15% of men and 5% of women in North America. However, the epidemiological study of sleep in the City of São Paulo (EPISONO), the prevalence was 26,1% among women and 40,6% among men. Due to breathing breaks and its consequent nocturnal micro-awakenings is able to fragment the sleeping architecture leading to neurocognitive, functional and psychosocial changes.
Performing descriptive analysis of the population with OSA diagnosis at a tertiary care center in Porto Alegre
A total of 561 polysomnographies performed in the sleep laboratory in Porto Alegre were analyzed, being used for descriptive analysis 421 of these, which the inclusion criterion was the Apnea-Hypopnea Index (AHI) bigger than or equal to 5.
From the 421 analyzed patients, 58% (244) women and the average age was 57 years old. The drowsiness scale of Epworth showed that 59,6% (251) of the patients had a score above 10, while the Berlin quiz demonstrated that 9,7% (41) of the patients were low risk and 88,6% were high risk for OSA diagnosis. About severity classification, the AHI average was of 27,7 apneas by sleep hour, being that 44,2% (186) patients presented mild symptoms (AHI between 5 and 14), 17,6% (74) patients had a moderate condition (AHI between 15 and 24) and 38,2% (161) had a serious condition (AHI above 25). The main comorbidities present in the studied patients were obesity, systemic arterial hypertension, chronic obstructive pulmonary disease, dyslipidemia, diabetes mellitus and depression. The patients with OSA diagnosis, 36,5% (153) had the indication of CPAP use.
The descriptive analysis of patients with OSA, showed prevalence in females, going against literature data. It also showed the importance of clinical assessment through quizzes and tests as the positive predictive value for the diagnosis of OSA and its main comorbidities associated with the disease.
"Epidemiology", "Obstructive sleep apnea", "Polysomnography"
Hospital Santa Casa de Misericórdia de Porto Alegra - Rio Grande do Sul - Brasil, Universidade Federal de Ciências da Saúde de Porto Alegre - Rio Grande do Sul - Brasil
Joana Lunardi, Ronaldo Cesar Barros Pinto, Aline Tiemi Hirose Ventura, Fernanda Altmann Oliveira, Carlos Javier Mendonza Bravo, Fabiola Schorr, Eduardo Garcia