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31.07.2018 | Original Contributions

The Evaluation of Screening Questionnaires for Obstructive Sleep Apnea to Identify High-Risk Obese Patients Undergoing Bariatric Surgery

Zeitschrift:
Obesity Surgery
Autoren:
Stephen A. Glazer, Ann L. Erickson, Ross D. Crosby, Jennifer Kieda, Agata Zawisza, Mervyn Deitel

Abstract

Background

Obstructive sleep apnea (OSA) is extremely common among bariatric surgical candidates. Identifying those at risk for moderate to severe OSA is challenging. Testing all bariatric surgical candidates with a level 1 polysomnographic study is expensive and resource intensive. The aim of this study is to evaluate three standardized screening questionnaires that are utilized to identify high-risk patients for OSA undergoing bariatric surgery.

Methods

A retrospective review of data collected prospectively was undertaken on bariatric surgical patients who have not had a preexisting diagnosis of OSA. Each patient was subjected to the STOP BANG and Berlin Questionnaires as well as the Epworth Sleepiness Scale (ESS), after which a level 1 polysomnogram was undertaken. Nonparametric receiver operating characteristic analyses were used to evaluate the relationship between questionnaire scores and OSA as determined by a formal sleep lab study.

Results

There were 266 patients subjected to a standard overnight polysomnogram and screening questionnaires. Area under the curve (AUC) values for analyses including the entire sample were significantly (p < .05) greater than chance (i.e., AUC = .50) for all questionnaire scores except the ESS for both severe OSA (AUC range = .584–.631) and moderate/severe OSA (AUC range = .589–.660), although the magnitude of the AUC values was quite modest. Sensitivity and specificity values from the current study are substantially lower than those previously reported in the literature.

Conclusions

Neither the STOP BANG nor Berlin questionnaires appear to be effective tools for detecting moderate- or high-risk patients for OSA undergoing bariatric surgery.

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