The effect of electrolytes on the course of labor

Questions of etiology, pathogenesis and treatment of weakness of labor activity are of paramount importance to date, especially during childbirth in the pelvic presentation. A necessary condition for the birth of a healthy child with pelvic presentation is the presence of good labor activity. Meanwhile, when studying the slow bioelectric activity of the uterus (BAM) by the method of G. M. Lisovskaya (1963), we found that the functional activity of the uterus during pelvic presentation of the fetus at the end of pregnancy is significantly reduced. The overall level of BAM as an indicator of quantitative measurement was on average equal to 34.7 conventional units in primiparous, 30.3 in repeat—bearing, while 65 and 50 respectively in head presentation. Consequently, the appearance of weakness of the expelling forces in childbirth is not accidental, but is due to the functional inferiority of the uterus that occurs at the end of pregnancy.