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Correlation between screening for obstructive sleep apnea using a portable device versus polysomnography testing in a
Marc R Watkins1, James B Talmage, Matthew S Thiese
1Division of Occupational and Environmental Medicine, Meharry Medical College, Nashville, TN, USA. marcwatkins@comcast.net
Journal of Occupational and Environmental Medicine
|September 30, 2009
Summary
Portable monitoring shows promise for identifying obstructive sleep apnea (OSA) in commercial drivers, offering a potential tool to assess risk before definitive polysomnography (PSG) testing.
Area of Science:
- Occupational Medicine
- Sleep Medicine
- Diagnostic Accuracy Studies
Background:
- Obstructive sleep apnea (OSA) poses significant health and safety risks, particularly for commercial drivers.
- Accurate diagnosis of OSA is crucial for managing these risks.
Purpose of the Study:
- To evaluate the diagnostic accuracy of portable monitoring devices for OSA compared to polysomnography (PSG).
- To assess the utility of portable monitoring in a commercial driver population.
Main Methods:
- A case series design involving commercial drivers screened for OSA.
- Drivers with positive screening underwent portable monitoring while awaiting PSG.
- Comparison of portable monitoring results against PSG-defined OSA (AHI >= 15).
Main Results:
- 346 drivers were screened; 34 completed both portable monitoring and PSG.
- The portable device demonstrated a positive predictive value of 0.64 and a negative predictive value of 0.87.
- A significant linear relationship (P = 0.0004) was found between portable device and PSG AHI values.
Conclusions:
- Portable monitoring may serve as a valuable tool for risk stratification in commercial drivers with a high likelihood of OSA.
- While not a perfect substitute for PSG, it can aid in identifying individuals needing further evaluation.
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