Internal Medicine

Answer 4 Potassium phosphate. The most common electrolyte derangements associated with RFS are hypophosphatemia and hypokalemia. Correction with a potassium phosphate solution is convenient and safe. Oral preparations are adequate in mild cases. Intravenous infusion can be administered if hypophosphatemia is severe. Intravenous doses of 0.08 mmol/kg body weight or an infusion of 15 mmol is adequate in many patients.5 Serial monitoring of potassium, phosphorus, and calcium is necessary to avoid complications. REFERENCE 5. Dwyer K, Barone JE, Rogers JF. Severe hypophosphatemia in postoperative patients. Nutr Clin Pract 1992;7:279-83. Click here to return to the questions

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