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  • Title: Preoperative Screening for Obstructive Sleep Apnea Using Alternative Scoring Models of the Sleep Tiredness Observed Pressure-Body Mass Index Age Neck Circumference Gender Questionnaire: An External Validation.
    Author: Seguin L, Tamisier R, Deletombe B, Lopez M, Pepin JL, Payen JF.
    Journal: Anesth Analg; 2020 Oct; 131(4):1025-1031. PubMed ID: 32925319.
    Abstract:
    BACKGROUND: The Sleep Tiredness Observed Pressure-Body mass index Age Neck circumference Gender (STOP-Bang) questionnaire is a validated preoperative screening tool for identifying patients with obstructive sleep apnea (OSA). Although it has a high sensitivity at scores ≥3, its specificity is moderate, particularly for scores of 3-4. This study aimed to externally validate the STOP-Bang questionnaire and the alternative scoring models that have been proposed to improve its predictive performance. METHODS: This prospective cohort study included 115 surgical patients with preoperative STOP-Bang scores of 3-8. Type 3 sleep recordings identified moderate-to-severe OSA, reflected by an apnea-hypopnea index (AHI) of >15. Patients were categorized into 2 subgroups: patients with an intermediate (STOP-Bang 3-4) or a high risk of OSA (STOP-Bang 5-8). For patients with scores of 3-4, we tested approaches identified in previous studies: stepwise stratification of the STOP-Bang questionnaire and additional preoperative measurement of serum bicarbonate concentrations. RESULTS: The incidence of moderate-to-severe OSA was significantly higher in patients with STOP-Bang scores of 5-8 than in patients with scores of 3-4: 45 of 58 patients (78%) versus 30 of 57 patients (53%), respectively (P < .01). For patients with STOP-Bang scores of 3-4, we found no differences regarding their OSA diagnosis between patients included in the alternative scoring models and those not included. CONCLUSIONS: The STOP-Bang questionnaire detected moderate-to-severe OSA patients when scores reached 5-8. However, its performance was altered in patients with STOP-Bang scores of 3-4, and alternative scoring models with specific combinations of factors failed to improve the screening of these patients.
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