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Review Question - QID 210705

Electrolyte Disturbances Potassium Electrolyte Disturbances Hyponatremia Hypernatremia Definition serum sodium of < 135 mmol/L Etiology pseudohyponatremia hyperglycemia hyperlipidemia hypervolemic hyponatremia congestive heart failure nephrotic syndrome cirrh QID: 210705 (M2.RL.18.4832)
In scope icon M 7 B
QID 210705 (Type "210705" in App Search)
A 56-year-old man with a history of pancreatic cancer presents to the surgical intensive care unit following a pancreaticoduodenectomy. Over the next 3 days, the patient's drainage output is noted to exceed 1 liter per day. In the early morning of postoperative day 4, the nurse states that the patient is difficult to arouse. His temperature is 99.5°F (37.5°C), blood pressure is 107/88 mmHg, pulse is 120/min, respirations are 17/min, and oxygen saturation is 98% on room air. His skin and mucous membranes are dry on physical exam. Laboratory values are ordered as seen below.

Serum:
Na+: 154 mEq/L
Cl-: 100 mEq/L
K+: 4.3 mEq/L
HCO3-: 27 mEq/L
BUN: 20 mg/dL
Glucose: 99 mg/dL
Creatinine: 1.1 mg/dL

Which of the following is the most appropriate next step in management?
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