Abstract
Objective: To correlate clinical changes and sleep questionnaires with polysomnographic findings in patients with obstructive sleep apnea (OSA) in a medical care sleep clinic of a reference hospital. Methods: This was an observational, cross-sectional study conducted at a referral hospital for otolaryngology. Thirty-five patients who complained of snoring and who had already performed polysomnography were selected. The patients completed three sleep questionnaires: Epworth Sleepiness Scale (ESE), Berlin Questionnaire and STOP-Bang Questionnaire. Results: OSA was found in 83% of patients, 55.2% men and 44.8% women, most in the sixth decade of life (41.4%). The mean Body Mass Index (BMI) was 32.6 (± 4.9 PD) and cervical circumference was 39.7 cm (± 4.9 PD). Regarding the sensitivity and specificity of the questionnaires in predicting OSA risk, it was found that the ESE presented sensitivity of 68.97% and specificity of 33.33%, STOP-BANG presented sensitivity 93.1% and specificity 16.6% and the Berlin Questionnaire, sensitivity 96.5% and specificity 0%. Conclusion: The ESE, Berlin and STOP-BANG questionnaires identified high risk patients for OSA, but did not accurately exclude low risk patients.