[Spontaneous and induced fetal movement activity in the 2d trimester of pregnancy].

During routine screening in the first half of pregnancy the authors evaluated in 3446 foetuses the incidence of spontaneous movements and movements after their attempted induction by movement of the uterus, when no spontaneous movements were recorded during examination. The examinations were made by means of a rotation probe 3.5 MHz of a Sonoline 2 apparatus (Siemens) always between 7.

Frequency of foetal growth deviations diagnosed by ultrasonic measurement and analysis of their causes.

In a population sample, whose congruity with the country-wide population was verified, the birthweight, menstrual age and gestational age (assessed by repeated ultrasonic foetometry in the course of pregnancy) were mutually correlated. A group of 80% of newborns out of the total population sample, in whom no disturbance of foetal growth rate was found throughout the course pregnancy, served as the basis for preparation of the standard of normal foetal growth. In the interval from the 36th to the 42nd week of pregnancy a highly significant linear relationship between gestational age and birthweight was found, without terminal flattening of the "normal foetal growth curve".