A nurse evaluates laboratory results for a client with heart failure. Which results should the nurse expect? (Select all that apply)
a. Hematocrit: 38%
b. Serum sodium: 130 mEq/L
c. Serum potassium: 4.0 mEq/L
d. Serum creatinine: 1.0 mg/dL
e. Proteinuria
f. Microalbuminuria