How do you calculate potassium correction?
Given the U waves that were seen on electrocardiography, oral correction alone would seem unwise. Kdeficit (in mmol) = (Knormal lower limit − Kmeasured) × kg body weight × 0.4. In this child, the calculated deficit would be (3.5 − 1.9) × 23 × 0.4, or 14.72 mmol.