Nursing Medical News about Sleep Apnea, Obstructive

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Correlation Between Screening for Obstructive Sleep Apnea Using a Portable Device Versus Polysomnography Testing in a Commercial Driving Population
Journal of Occupational and Environmental Medicine, 10/05/09

Watkins MR et al. – 346 drivers were screened and 34 completed PSG and portable monitoring. Comparing the portable device to PSG at a definition of OSA as an apnea hypopnea index (AHI) >=15, positive predictive value is 0.64 with a 0.87 negative predictive value. Positive likelihood ratio is 4.20. Linear regression model found statistically significant relationship between the portable device and PSG AHI values. Although not perfect, portable monitoring may be useful in further stratifying risk in drivers who have a high probability of having OSA.