34F is admitted with weakness and malaise 90 days s/p gastri…

34F is admitted with weakness and malaise 90 days s/p gastric sleeve surgery. Her labs are as follows: Na+ 129 mEq/L (135 – 145 mEq/L) BUN 28 mg/dL (8 – 20 mg/dL) Creat 1.8 mg/dL (0.7 – 1.1 mg/dL) Hgb 16.4 g/dL (11 – 15 g/dL) Total Protein 4.1 g/dL (6 – 8 g/dL) Albumin 2.2 g/dL (3.4 – 5.4 g/dL) The patient asks the nurse why she’s feeling so unwell. The nurse suspects this patient is exhibiting which gastric sleeve complications?