The nurse must awaken a patient from Stage 4 non-rapid eye movement sleep in order to prepare the patient for a procedure. The patient is disoriented. What is the nurse's best action?

A) Notify the healthcare provider
B) Re-assess the patient's orientation
C) Administer an anti-anxiety medication
D) Cancel the patient's procedure

Stage 3 (N3) and Stage 4 (N4) are the periods of deep sleep. N3 is characterized by very slow brain waves called delta waves interspersed with smaller, faster waves. In Stage 4 (N4), the EEG shows almost exclusively delta waves. In this type of sleep it is difficult to awaken the individual and muscle activity is very limited or may be completely absent. A person awakened from Stage 3 or 4 of sleep could be disoriented for a brief period of time before regaining awareness.