Problem: A hospitalized client asks the nurse for sodium bicarbonate to relieve heartburn after a meal. The nurse reviews the client's medical record, knowing that the medication is contraindicated in which condition? A hospitalized client asks the nurse for sodium bicarbonate to relieve heartburn after a meal. The nurse reviews the client's medical record, knowing that the medication is contraindicated in which condition? Hydronephrosis on renal ultrasound Atelectasis on chest x-ray Serum pH 7.52 (7.52), bicarbonate 30 mEq/L (30 mmol/L) Serum pH 7.22 (7.22), bicarbonate 29 mEq/L (29 mmol/L)