The nurse is caring for a client with burns and reviews the client's laboratory results: blood urea nitrogen (bun), 30 mg/dl (10.2 mmol/l); creatinine, 2.4 mg/dl (184 mcmol/l); serum potassium, 6.3 meq/l (6.3 mmol/l); ph, 7.1; po 2, 90 mm hg; and hemoglobin (hgb), 7.4 g/dl (74 mmol/l). which condition does the nurse suspect the client has based upon these findings? azotemia hypokalemia metabolic alkalosis respiratory alkalosis