[Unusual cause for the development of hemoperitoneum].

The authors describe an unusual origin of haemoperitoneum in a young woman. The hemoperitoneum appeared twice in a period of 10 months. The first attack was mild and atypic.

[Rarely occurring complications in vacuum extraction].

The authors report on two seldom observed complications of vacuum extraction, infraction or fracture of the parietal bone of newborn. They healed up without sequels in the further psychomotoric development. The authors consider vacuum extraction as a contribution to obstetric operation practise.

[Acid-base equilibrium of fetuses delivered by breech presentation].

Acid-base balance of fetus in capillary and umbilical blood has been examined in two series of newborns: 30 newborns delivered by breech presentation and 15 newborns delivered spontaneously by vetex presentation without complications. Following parameters have been evaluated: pH, pCO2, BE and HCO3 (actual bicarbonate content). Differences between the parameters of acid-base balance, mainly the values of pH and pCO2 in capillary blood and in a.