A client with primary insomnia asks the nurse why day naps do not really compensate for a lost
night's sleep. The best reply for the nurse is
a. "Circadian cycles give daytime naps a structure different from nighttime sleep.".
b. "The body clock operates on a 25-hour cycle, making nap effectiveness
unpredictable.".
c. " It is a matter of habit and expectation. We expect to be more refreshed from a
night's sleep.".
d. "Sleep restores homeostasis but works more efficiently when aided by melatonin
secreted at night.".
A
A regular 90- to 100-minute sleep cycle occurs with nighttime sleep, with progression through two
distinct physiological states: four stages of non–rapid eye movement (REM) sleep and a period of
REM sleep. Naps often contain different amounts of REM sleep, thus changing the physiology of
sleep as well as the psychological and behavioral effects of sleep. Options B and D are not true
statements. Option C has little bearing on the reason for lack of refreshment.
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