Sonographic observation of fetal behavior as a possible indicator for the state of fetal health was quantified with a modified biophysical profile (BPP). The observation time was extended to 40 min, as the fetal rest-activity cycle implies that inactivity may last that long. Gestational age ranged 27–43 weeks. Cardiotocography (CTG) was performed subsequent to an abnormal BPP (ultrasound score 0–4). Reactivity, indicating favorable fetal outcome, was more common in near-term fetuses, suggesting that BPP should be interpreted in relation to gestational age. Therefore, fetuses with an abnormal BPP (n = 29) were each matched and compared with 2 fetuses of same gestational age but normal BPP (ultrasound score 6–8; n = 58). The perinatal mortality and morbidity were significantly higher in infants with abnormal score than in infants with normal score (p < 0.01). BPP by third trimester sonography helps to diagnose acutely endangered fetuses, and an abnormal fetal movement pattern should lead to further evaluation, i.e. CTG. While BPP scoring, as compared to CTG, is less favorable as a primary surveillance technique and not superior for identifying the hypoxic fetus, additional information is obtained with BPP by diagnosing the growth-retarded and/or malformed fetus.

Keywords:
Biophysical profile, Fetal outcome
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© 1989 S. Karger AG, Basel
1989
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