[The influence of delivery methods for twins on obstetric results].

The analysis covered 100 twin gestations over the years 1996-1998 in the material of Gynecology and Obstetrics Clinic in Bydgoszcz. The authors estimated the relations between the mode of delivery and presentations of the twins. Abnormal foetal presentation occurred in 68 pregnancies (68%), and was more often in the second twin (61.8%). The highest percentage of cesarean sections (29%) we have observed in the case of an abnormal presentation of the first twin. The condition of the twins in their first minute after the birth was estimated according to the birth weight, the gestational age, and the mode of surgical procedures performed. Better condition after the birth of the second twin with the birth weight above 1000 g comparing to the first twin was established in cesarean sections, not in other obstetrical procedures. There was no essential difference between the mortality rate of the first and the second twin. Early diagnosis of the twin pregnancy using USG helps us to choose a suitable management during pregnancy and an optimal mode of delivery.