TY - JOUR
T1 - Maintenance of Wakefulness Test scores and driving performance in sleep disorder patients and controls
AU - Philip, Pierre
AU - Chaufton, Cyril
AU - Taillard, Jacques
AU - Sagaspe, Patricia
AU - Léger, Damien
AU - Raimondi, Monika
AU - Vakulin, Andrey
AU - Capelli, Aurore
PY - 2013/8
Y1 - 2013/8
N2 - Objective: Sleepiness at the wheel is a risk factor for traffic accidents. Past studies have demonstrated the validity of the Maintenance of Wakefulness Test (MWT) scores as a predictor of driving impairment in untreated patients with obstructive sleep apnea syndrome (OSAS), but there is limited information on the validity of the maintenance of wakefulness test by MWT in predicting driving impairment in patients with hypersomnias of central origin (narcolepsy or idiopathic hypersomnia). The aim of this study was to compare the MWT scores with driving performance in sleep disorder patients and controls. Methods: 19 patients suffering from hypersomnias of central origin (9 narcoleptics and 10 idiopathic hypersomnia), 17 OSAS patients and 14 healthy controls performed a MWT (4. ×. 40-minute trials) and a 40-minute driving session on a real car driving simulator. Participants were divided into 4 groups defined by their MWT sleep latency scores. The groups were pathological (sleep latency 0-19. min), intermediate (20-33. min), alert (34-40. min) and control (>. 34. min). The main driving performance outcome was the number of inappropriate line crossings (ILCs) during the 40. minute drive test. Results: Patients with pathological MWT sleep latency scores (0-19. min) displayed statistically significantly more ILC than patients from the intermediate, alert and control groups (F (3, 46). = 7.47, p. <. 0.001). Interpretation: Pathological sleep latencies on the MWT predicted driving impairment in patients suffering from hypersomnias of central origin as well as in OSAS patients. MWT is an objective measure of daytime sleepiness that appears to be useful in estimating the driving performance in sleepy patients.
AB - Objective: Sleepiness at the wheel is a risk factor for traffic accidents. Past studies have demonstrated the validity of the Maintenance of Wakefulness Test (MWT) scores as a predictor of driving impairment in untreated patients with obstructive sleep apnea syndrome (OSAS), but there is limited information on the validity of the maintenance of wakefulness test by MWT in predicting driving impairment in patients with hypersomnias of central origin (narcolepsy or idiopathic hypersomnia). The aim of this study was to compare the MWT scores with driving performance in sleep disorder patients and controls. Methods: 19 patients suffering from hypersomnias of central origin (9 narcoleptics and 10 idiopathic hypersomnia), 17 OSAS patients and 14 healthy controls performed a MWT (4. ×. 40-minute trials) and a 40-minute driving session on a real car driving simulator. Participants were divided into 4 groups defined by their MWT sleep latency scores. The groups were pathological (sleep latency 0-19. min), intermediate (20-33. min), alert (34-40. min) and control (>. 34. min). The main driving performance outcome was the number of inappropriate line crossings (ILCs) during the 40. minute drive test. Results: Patients with pathological MWT sleep latency scores (0-19. min) displayed statistically significantly more ILC than patients from the intermediate, alert and control groups (F (3, 46). = 7.47, p. <. 0.001). Interpretation: Pathological sleep latencies on the MWT predicted driving impairment in patients suffering from hypersomnias of central origin as well as in OSAS patients. MWT is an objective measure of daytime sleepiness that appears to be useful in estimating the driving performance in sleepy patients.
KW - Driving performance
KW - Hypersomnias of central origin
KW - Maintenance of Wakefulness Test
KW - OSAS
UR - http://www.scopus.com/inward/record.url?scp=84884280714&partnerID=8YFLogxK
U2 - 10.1016/j.ijpsycho.2013.05.013
DO - 10.1016/j.ijpsycho.2013.05.013
M3 - Article
SN - 0167-8760
VL - 89
SP - 195
EP - 202
JO - International Journal of Psychophysiology
JF - International Journal of Psychophysiology
IS - 2
ER -