[The current importance of ultrasonics in the diagnostic progressive program in prenatal care].

In the University-Clinic of Obstetrics and Gynecology (Charite) of Berlin we carried out about 20,000 examinations with the method of ultrasound. In the presented paper we want to put a declaration about the survey of this method in the system of diagnosis during pregnancy. Our experiences led to the same conclusions like published in international journals. The following parameters have been successful in clinical practice: biparietal diameter, position of the fetus, localisation of placenta, diagnosis of heart-beat and other. We concentrated our investigations to the calculation of actual fetal weight in utero. For this aim we established formulas; thus we are able to calculate the weight with the aid of 4 parameters of ultrasound. The evaluation of 621 cases has shown the deviation of the calculated weight compared with the real birth weight is without problems in the group of big babies. For the group of premature deliveries it is nessecery to carry out tocolysis until a calculated weight of 2500 g. In all the babies, calculated in this largeness everyways the real birth weight has been more than 2000 g.