1. VP a 53-year-old woman, presents to the hospital complaining of abdominal pain, nausea, constipation, and weakness of I week's duration. She has been taking lithium carbonate 300 mg TID daily for 10 years for DSM-IV-TR bipolar disorder. She has complained of fatigue, decreased concentration, decreased appetite, and muscle weakness for several weeks, prompting concerns of an exacerbation of depression. Admission laboratory studies revealed, BP 140/100 mm/Hg, HR 63, Na 141 mEq/L, K 4 mEq/L, Ca 14.5 mg/dL, Mg 2.1 mEq/L, Phosphate 1.3 mg/dL, a marginally elevated serum lithium level at 1.27 mEq/L, parathyroid hormone (PTH) level of 68.2 pg/mL (10-75pg/ml) and a 25-hydroxy vitamin D level of 46.8 ng/ml. 30ng/ml). I What electrolyte disorder does VP present with? List at least 3 criteria within VP's case that supports your answer.