[Pregnancy-induced hypotonia. A prospective study of fetal development, labor and morbidity of newborn infants].

Maternal and foetal risk of hypotension in pregnancy were examined in a prospective study, comprising a total of 770 pregnant women i.e. 700 normotensives and 70 hypotensives. We conducted a minimum of 5 pressure controls beginning after the 20th week of gestation. All pressure controls were conducted by the same person and in each control 4 pressure values were taken (left and right arm, lying, standing). No difference was discovered in the statistical analysis of our data of pregnancy, delivery and foetal outcome. Our special interest was in the frequency of preterm delivery and foetal growth retardation. The rate was similar in the hypotensive group (6.7/3.1%) compared to the normotensive group (6.8/2.8%). From our results we conclude, that maternal hypotension is not a risk factor in pregnancy, and that no therapy is needed.