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Table 3 Postoperative fluid and electrolyte data of the neonates

From: Postoperative hyponatremia in neonates with esophageal atresia and tracheoesophageal fistula receiving restricted hypotonic fluids

  Day 1 postop Day 2
postop
Day 3
Postop
Fluid ml/kg/day (mean ± SD) Obsa Expb obsa Expb Obsa Expb
101 ± 8 120 105 ±8 140 104 ± 7.9 150
Urine output ml/kg/h (mean ± SD) 1.4 ± 0.3 2.5 ± 0.4 2.8 ± 0.3
Serum sodium meq/L (mean ± SD) 137.7 ± 4.1 139.4 ± 6 138.3 ± 4
Hyponatremia n% 13/90(14%) 9/88(10%) 8/85(9.4%)
 Mild 5/90 4/88 5/85
 Moderate 7/90 5/88 3/85
 Severe 1/90 0/88 0/85
Serum osmolality mosm/kg (mean ± SD) 277 ± 5 278 ± 5.5 276 ± 5.8
S. Lactate mmol/l(mean ± SD) 3.1 ± 0.8 2.3 ± 0.9 1.9 ± 0.7
  1. aObs observed
  2. b Exp expected