The twin-twin transfusion syndrome is a rare but severe complication i
n monozygotic twins. A total of 172 twin pregnancies were investigated
in our hospital between January 1990 and August 1993. The patients we
re divided into 4 groups: Group I: Normal twin pregnancy, treatment on
ly in our hospital. Group II: Twin-twin transfusion syndrome, treatmen
t only in our hospital. Group III: Normal twin pregnancy, delivery in
another hospital. Group IV: Twin-twin transfusion syndrome, after trea
tment and therapy delivery in another hospital. These cases were analy
sed concerning prenatal management and perinatal outcome. The perinata
l mortality rate in group I-IV was 17 %, 58 %, 18 % and 60 %, respecti
vely. A benefit of aggressive amniocentesis in case of polyhydramnios,
administration of digoxin and timing of labour could be demonstrated.