P115 CLINICAL PROFILE AND PREVALENCE OF OBSTRUCTIVE SLEEP APNEA IN A POPULATION OF YOUNG ADULTS REGISTERED IN A PRIMARY CARE UNIT IN RIO DE JANEIRO

Background: Obstructive Sleep Apnea (OSA) is strongly associated with high blood pressure (BP) and cardiovascular risk (CVR). There is a lack of studies and specific screening for younger populations, which could allow for early intervention and potentially reduce CVR. Objective: Analyze the prevalence and clinical profile of OSA, identifying the best screening method in a young population attended by a Family Health Strategy Unit in Rio de Janeiro. Methods: Cross-sectional population study of adults between 20 and 65 years old. Sociodemographic characteristics, anthropometric measures and CVR were obtained. Office BP was calculated using two measurements. The risk of OSA was assessed using STOP-BANG (SB) and Epworth Sleepiness Scale (ESS) questionnaires. All underwent home polysomnography. Result: 67 individuals included [38.9% men; average age of 38.9 ± 8 years]: 35 without OSA, 20 with mild OSA, 9 with moderate OSA and 3 with severe OSA. The prevalence of moderate/severe OSA was 18%. Individuals with moderate/severe OSA were older, more obese, had higher prevalence of increased neck circumference, dyslipidemia and heart rate. High risk for OSA in screening by SB, ESS and both questionnaires was respectively 55.2%, 44.8% and 19.4%. SB confirmed moderate/severe OSA in 30% in high-risk individuals, and excluded in 97% of low risk, with 60% accuracy. The sensitivity, specificity, PPV and NPV of SB to identify moderate/severe OSA were respectively 92%, 53%, 36% and 97%. In those with high risk according to the ESS, moderate/severe OSA was confirmed in 13%, while in those with low risk it was excluded in 78%. The accuracy of the ESS was 49%. The sensitivity, specificity, PPV and NPV of the ESS to identify moderate/severe OSA were respectively 33%, 53%, 13% and 78%. Conclusion: Moderate/severe OSA was more associated with an adverse metabolic profile than with high BP. The best screening questionnaire for this population is the STOP-BANG.