[Measurement of intrauterine pressure during extra-amnial induced abortion with prostaglandin F2 alpha].

There was given Pg F2 alpha extraamnially and intracavitary to thirty firstgravid nulliparae of the eleventh, twelfth, thirteenth or fourteenth week of pregnancy and there were taken through measurements of the intrauterine pressure in labour. The uterine activity was measured in Montevideo-Units. We registered labour duration, number of labours, amplitude and basal tonus. During the time of observation we attained a basal tonus of 30 +/- 10 mm Hg, a number of labours from 8 to 13 within 10 minutes, Montevideo-Units of 600 +/- 100 and a labour duration of about 45 seconds in 65% of the cases. The types of labour number 1 and 2 were predominant. In these cases we were able to demonstrate optimal clinical results in cases of Pg F2 alpha induction.--The meaning of Pg F2 alpha (extraamnially) for the induction of abortion will be discussed.