The nurse is making rounds on the hospital unit and observes a patient sleeping. The patient's pulse and respiratory rates are slower than baseline. The nurse realizes the patient has most likely just entered which stage of non-rapid eye movement sleep?
a. Stage 1
b. Stage 2
c. Stage 3
d. Stage 4
ANS: B
In Stage 2 (N2), eye movement ceases; brain waves become even slower with the exception of an occasional burst or more rapid brain waves. Pulse rate and respirations slow and body temperature decreases as the individual moves toward deeper stages of sleep. Stage 3 (N3) and Stage 4 (N4) are the periods of deep sleep.
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