Fetal Biophysical Profile and the Effect of Premature Rupture of the Membranes

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Abstract
A retrospective study of 1151 fetal biophysical profiles and scores associated with good pregnancy outcome was conducted over a three-year period in the author''s institution. Normal fetal biophysical activities and scores were determined throughout gestation from 25 to 44 weeks in patients with intact membranes, and compared with profiles and scores of a group of patients with premature rupture of the membranes and good pregnancy outcome. These data suggest that although the biophysical scoring of the healthy fetus with intact membranes does not change significantly throughout gestation, some of the fetal biophysical variables (nonstress test, fetal breathing movements, amniotic fluid volume, and placental grading) do. The rupture of membranes was found to be associated with higher incidence of reactive nonstress testing, absence of fetal breathing, and reduced amniotic fluid volume in most gestational ages; however, the overall biophysical scoring of the healthy fetus was not altered throughout gestation by the presence of ruptured membranes.