Screens for obstructive sleep apnea risk before surgery
When to Use
Preoperative screening for obstructive sleep apnea (OSA)
Patients undergoing surgery under general anesthesia or sedation
Sleep clinic screening tool
When NOT to Use
Patients already diagnosed with OSA on treatment (use to assess compliance instead)
Pediatric patients
Should not replace polysomnography for definitive diagnosis
Running Total0 / 8
Snoring: Do you snore loudly (louder than talking or loud enough to be heard through closed doors)?(+1 point)
Tired: Do you often feel tired, fatigued, or sleepy during daytime?(+1 point)
Observed: Has anyone observed you stop breathing during sleep?(+1 point)
Blood Pressure: Are you being treated for high blood pressure?(+1 point)
BMI > 35 kg/m2?(+1 point)
Age > 50 years?(+1 point)
Neck circumference > 40 cm (16 inches)?(+1 point)
Gender: Male?(+1 point)
Evidence & References
Chung F, Yegneswaran B, et al. STOP questionnaire: a tool to screen patients for obstructive sleep apnea. Anesthesiology. 2008;108(5):812-821.PMID: 18431116
Chung F, Abdullah HR, Liao P. STOP-Bang Questionnaire: A Practical Approach to Screening for Obstructive Sleep Apnea. Chest. 2016;149(3):631-638.PMID: 26378880
Disclaimer: This calculator is a clinical decision aid and does not replace clinical judgment. Always consider the full clinical context when making patient care decisions.