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

Annals of Pediatric Surgery

Table 3 Postoperative fluid and electrolyte data of the neonates

	Day 1 postop		Day 2 postop		Day 3 Postop
Fluid ml/kg/day (mean ± SD)	Obs^a	Exp^b	obs^a	Exp^b	Obs^a	Exp^b
Fluid ml/kg/day (mean ± SD)	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