The PACU nurse is assessing a patient during the immediate postoperative period. Which of the following assessment findings may indicate that the patient needs oxygen therapy?
A) Increase in respiratory rate from 20 breaths per minute to 32 breaths per minute
B) Increase in blood pressure from 110/62 mm Hg to 132/88 mm Hg
C) Decrease in pulse oximetry reading from 100% to 98%
D) Decrease in Pa02 reading from 93 mm Hg to 89 mm Hg
Ans: A
Feedback: A change in the patient's respiratory rate or pattern may be one of the earliest indicators of the need for oxygen therapy. Hypoxemia may results in an increase in blood pressure, not a decrease in blood pressure. A pulse oximetry reading of 98% and a Pa02 of 89 mm Hg are normal values.
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