Truckers drive long hours and are not always as rested as they should be. Part of the sleep deprivation equation in some truckers may be undiagnosed obstructive sleep apnea (OSA), which is a syndrome characterized by sleep-disordered breathing, resulting in excessive daytime sleepiness, sleep attacks, psychomotor deficits, and disrupted nighttime sleep.
Unfortunately, OSA increases the risk of motor vehicle accidents, and is common among truck drivers. Approximately 2.4 to 3.9 million licensed commercial drivers in the U.S. are expected to have OSA. In addition to being unrecognized or unreported by drivers, OSA often remains undiagnosed by many primary care clinicians despite the fact that OSA increases the risks of hypertension, diabetes mellitus, and heart disease.
In a study published in the March 2009 Journal of Occupational and Environmental Medicine, 456 commercial drivers were examined from over 50 different employers. Seventeen (17%) met the screening criteria for suspect OSA. These drivers were older and more obese, and had a higher average blood pressure. Of the 53 drivers who were referred for sleep studies, 33 did not comply with the referral and were lost to follow-up. The remaining 20 were all confirmed to have OSA, but after diagnosis, only one of these 20 drivers with confirmed OSA complied with treatment recommendations.
Philip Parks, MD, MPH, is the study's lead author. Parks says, "It is well-known that obesity, a leading risk factor for obstructive sleep apnea, is on the rise in the United States. Truck drivers with sleep apnea have up to a 7-fold increased risk of being involved in a motor vehicle crash." Parks also notes, "Although it is not surprising, it is concerning that we found that drivers with sleep apnea frequently minimize or underreport symptoms such as snoring and daytime sleepiness. In our study, the majority of truck drivers did not follow through on physician recommendations for sleep studies and sleep apnea treatment." He continues, "As a result, it is possible that many of the 14 million truck drivers on American road have undiagnosed or untreated sleep apnea."
The Federal Motor Carrier Safety Administration is currently considering requiring sleep apnea screening for all obese drivers based on body mass index (BMI). The Administration requires medical certification of licensed commercial drivers at least every two years. I absolutely support sleep apnea screening for truck drivers because I belive it would help reduce the number of accidents caused on the road from lack of sleep.
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