[Breech presentation in multiple pregnancy].
A retrospective analysis of the ten-year experience with the delivery of twins in breech presentation was performed in this paper. Out of 17,300 deliveries there were 173 deliveries of twins which accounted for 1%. From that number there were 99 (57.2%) multiple deliveries where one or both of the twins were in breech presentation. Deliveries in this group were more frequently terminated surgically (31.8%) than in the whole population of deliveries of twins (x2 = 26,182; p less than 0.001). In this group of 99 deliveries, out of 198 twins 117 were born with the body mass less than 2,500 g (59.1%) and 56 (56.6%) pregnancies were terminated prior to 37th week of gestation. Perinatal mortality was greater in the group of twins with breech presentation (12.52:9.8%). Breech presentation put the fetus at risk due to two reasons--multiple pregnancy (high prematurity and newborn with the delay in fetal growth and development) on one hand and complications which may arise during the breech presentation on the other.