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Arch Intern Med. 1989 Jun;149(6):1423-5.

Large phosphate shifts with treatment for hyperglycemia.

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St Luke's Hospital, San Francisco, Calif.


Although hypophosphatemia is known to commonly accompany therapy for hyperglycemia, it is not generally appreciated that severe life-threatening depletion of phosphate may occur. I followed up two patients who had precipitous drops during intravenous insulin therapy for diabetic ketoacidosis and hyperosmolar nonketotic state. The patient with diabetic ketoacidosis had a phosphate level nadir that equaled the lowest recorded phosphate level in a living human (0.03 mmol/L). Because (1) serum phosphate levels do not reflect total body phosphate stores, (2) rapid shifts of phosphorus can occur among body compartments, and (3) severe hypophosphatemia is potentially life-threatening, phosphate levels should be frequently monitored during therapy for hyperglycemia and intervention should be undertaken if phosphate levels fall below 0.5 mmol/L.

[Indexed for MEDLINE]

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