Which assessment by the nurse indicates that a patient who has just fallen to sleep is in stage 1 of sleep?
A) Slow rolling eye movements
B) Breathing slows down
C) Rapid eye movement
D) Drop in blood pressure
A) Slow rolling eye movements
Explanation: A) N1, or stage 1, is sometimes called light sleep. The individual drifts from the awake state into sleep, and slow rolling movements of the eye may be observed.
B) In stage 2 (N2) and stage 3 (N3), the respiratory rate slows down.
C) In rapid eye movement sleep (REM sleep), the eyes move back and forth rapidly. The first REM period begins about 90 minutes after sleep onset.
D) A drop in blood pressure occurs in stage 3 (N3) of sleep.
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