Premature labour is provoked by noumerous causes that represent a combination of socioeconomic, maternal and fetal factors, that usually act together. The introduction of of tocolytic agents in obstetric practice has not appeared to substantially change the incidence of preterm delivery. This problem is still one of the unsolved ones in perinatal medicine. The aim of the study was to present how structural and functional anomalies of placental physiology can be connected with this disarrangement of pregnancy.In our study of 327 pregnancies controled in our unit in 41 (13,26%) symtoms of premature labour were present: contractions, vaginal bleeding, abrevation and dilatation of cervical ostium. With adequate treatment, in form of combination of tocolytics, spasmolytics, hormones, nonsteroid antiinflammatorz drugs, antibiotics and atimycotics we have posponed delivery to term in 34 (82,92%) of cases. The use of appropriate medications, that blocks pahtophysiological mechanisms responsible for preterm labour in most cases we can enable prolongation of gestation and term delivery.

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