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[News] Clinical Evaluation, Pulse Ox More Efficient for Sleep Apnea Detection?
Clinical Evaluation, Pulse Ox More Efficient for Sleep Apnea Detection

Detecting obstructive sleep apnea may become more simplified and cost-efficient thanks to a clinical pathway evaluation and use of common in-hospital vital readings.

Sunil Sharma, MD, of Thomas Jefferson University, and colleagues implemented a clinical pathway evaluation in a study of 754 patients between February 2013 and February 2014. Upon admission, obese patients (BMI ≥ 30) were screened for sleep apnea with the snoring, tiredness during daytime, observed apnea, high blood pressure (STOP) questionnaire. If positive for sleep apnea, healthcare professionals were advices to perform follow-up evaluations, including polysomnography.

In all, 636 patients were classified as high risk for sleep apnea and 118 as low risk. Following discharge, 149 patients underwent polysomnography, after which 87% were determined to have sleep apnea. The researchers concluded that an optimal sleep apnea screening cutoff point was an oxygen desaturation index level of ≥ 10/h [Matthews correlation coefficient = 0.36, 95% confidence interval = 0.24–0.47]. Significantly more patients were identified to have sleep apnea and underwent polysomnography following the introduction of the clinical pathway evaluation than previous years.

The researchers stressed that overnight pulse oximetry to determine oxygen desaturation index may be a cost-effective method for screening for sleep apnea in admitted patients.

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Except that this study didn't evaluate those who were at low risk. We all know people at low risk can also have sleep apnea.

All this study indicates is that they need to do another, better study.
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