Estimated Electrolyte Deficits by Cause

Cause

Sodium (mEq/L and mmol/L)

Potassium (mEq/L and mmol/L)

Diarrhea

Isotonic dehydration

80

80

Hypotonic dehydration

100

80

Hypertonic dehydration

20

10

Pyloric stenosis

80

100

Diabetic ketoacidosis

80

50