RESUMO
This study described the incidence and severity of obstructive sleep apnea (OSA) and determined the sensitivity and specificity of the STOP-BANG Questionnaire in patients undergoing total joint arthroplasty (TJA) at a military academic medical center. All subjects completed the questionnaire and an unattended sleep study preoperatively. Incidence and severity of OSA (apnea-hypopnea index [AHI] ≥ 5) was calculated. Sensitivity and specificity for STOP-BANG cut scores greater than or equal to 3 and 5 for AHI of 5, 15, and 30 or more were determined. The rate of OSA was 51.2% (42/82), moderate to severe OSA was 29.3% (n = 29), and severe OSA was 7.3% (n = 6). Sensitivity and specificity for a STOP-BANG score of 3 or greater were 85.7% and 43.6% for OSA, 91.7% and 36.8% for moderate OSA, and 100% and 30.7% for severe OSA. A STOPBANG score of 5 or greater increased specificity for mild, moderate, and severe OSA to 84.6%, and 78.9%, and 72%. Patients undergoing TJA have a high rate of undiagnosed OSA. It is recommended to screen these patients using the STOP-BANG, implement OSA risk reduction strategies, and refer patients postoperatively for a sleep study if their STOP-BANG score is at least 3.