The nurse is reviewing the results of the client’s diagnostic testing

The nurse is reviewing the results of the client’s diagnostic testing for pulmonary function. Of the following results, the finding that falls within expected or normal limits is:

1. SpO2 88%
2. pH 7.52
3. PaCO2 55 mm Hg
4. Decreased peak expiratory flow rate (PEFR) from prior assessment

ANSWER

ANS: 3
The normal SpO2 is 98% to 100%; the client’s measurement is low at 88%. The normal pH is 7.35 to 7.45; the client’s pH is high at 7.52. The normal PaCO2 is 35 to 45 mm Hg; the client’s PaCO2 is elevated at 55 mm Hg. The normal PEFR should increase or remain the same when compared to the prior assessment. A decreased PEFR would indicate airway obstruction. Predicted values are based on age, sex, and height.