Which arterial blood gas values are typical for the client with cystic fibrosis?
A. pH 7.28, HCO3– 12 mEq/L, PCO2 45 mm Hg, PO2 96 mm Hg
B. pH 7.32, HCO3– 17 mEq/L, PCO225 mm Hg, PO2 98 mm Hg
C. pH 7.28, HCO3– 36 mEq/L, PCO2 65 mm Hg, PO2 78 mm Hg
D. pH 7.48, HCO3– 12 mEq/L, PCO2 35 mm Hg, PO2 85 mm Hg
C
Cystic fibrosis in adults is usually a long-standing disorder in which gas exchange is impaired. Most adult clients with CF have arterial blood gas values indicating poor gas exchange and par-tially compensated respiratory acidosis with greatly reduced PaO2, increased PaCO2, increased bicarbonate level, and low pH.
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