[Bartter syndrome--a rare cause of severe polyhydramnios].

We report a case of a 25-year-old woman, gravida II, Para I, in pregnancy week 26 + 4 with severe polyhydramnios. The amniotic fluid index was about 39. Type 2 scanning showed a large urinary bladder only. Treated in pregnancy with repeated aminodrinage, total 21 litres. In week 33 + 5, a Caesarean section was performed. A girl with Apgar score 10/1, 0/10 was born, weight 1,804 grammes. Immediately after birth the child developed polyuria with diuresis, about 8-10 ml/kg/hour, electrolyte disturbance, and vomiting, treated with Losec, Gaviscon, indometacin, and Vioxx. The diagnosis was Bartter syndrome.