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
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.
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