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Self-reported Drowsiness and Safety Outcomes While Driving After an Extended Duration Work Shift in Trainee
Clare Anderson1,2,3, Suzanne Ftouni3, Joseph M Ronda1,2
1Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, MA.
Sleep
|December 28, 2017
Summary
Extended duration work shifts (EDWSs) significantly increase drowsy driving risks for medical residents. Predrive sleepiness, measured by the Karolinska Sleepiness Scale (KSS), strongly predicts adverse driving events, highlighting legal implications.
Area of Science:
- Occupational Health
- Sleep Medicine
- Traffic Safety
Background:
- Extended duration work shifts (≥24 hours) are linked to increased motor vehicle crash risks.
- Assessing predrive self-reported sleepiness is crucial for understanding legal accountability in driving-related incidents.
Purpose of the Study:
- To evaluate the relationship between predrive self-reported sleepiness and adverse driving events in medical residents following extended duration work shifts (EDWSs).
Main Methods:
- Sixteen resident physicians (10 female, mean age 29.2 years) completed 438 drives after EDWSs.
- Sleep and work hours were logged, and adverse driving outcomes were recorded.
- Self-reported sleepiness (Karolinska Sleepiness Scale; KSS) and objective drowsiness were measured.
Main Results:
- Both self-reported sleepiness and objective drowsiness were elevated after EDWSs.
- Drives home after EDWSs showed more than double the adverse outcomes compared to commutes to work.
- EDWSs more than tripled the odds of sleep-related, inattentive, hazardous, or violation-driving events, predicted by predrive KSS levels.
Conclusions:
- Driving after EDWSs poses significant risks to resident physicians and other road users.
- Predrive self-reported sleepiness is a strong predictor of adverse driving outcomes, with implications for legal accountability.
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