The nurse teaches a client taking phenytoin (Dilantin), an
anticonvulsant, that this group of medications causes which symptom of a sleep problem?
B) Increased daytime sleepiness.
C) Increased awakening from sleep.
D) Increased difficulty falling asleep.
B.) The anticonvulsants can cause increased daytime sleepiness because they decrease REM sleep time. They do not cause nocturia, increased awakenings, or increased difficulty falling asleep.