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