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  • Title: Antenatal testing to predict outcome in pregnancies with unexplained antepartum haemorrhage.
    Author: Ajayi RA, Soothill PW, Campbell S, Nicolaides KH.
    Journal: Br J Obstet Gynaecol; 1992 Feb; 99(2):122-5. PubMed ID: 1554662.
    Abstract:
    OBJECTIVE: To investigate whether Doppler studies of placental perfusion and antenatal tests for fetal hypoxia can identify reduced placental functional reserve in women with unexplained antepartum haemorrhage (APH). DESIGN: A prospective, longitudinal study. SETTING: Fetal Surveillance Unit, King's College Hospital, London. SUBJECTS: 48 women with bleeding from the genital tract after 26 weeks gestation without a clinical diagnosis of abruption or ultrasound evidence of placenta praevia. INTERVENTIONS: Fetal surveillance by Doppler measurements of the umbilical and uterine arteries, biophysical profile scoring and computerized measurement of the mean minute range of FHR variation. MAIN OUTCOME MEASURES: A poor outcome was defined by one or more of the following: (i) birthweight greater than 2SD below the normal mean for gestational age and sex, (ii) abnormal FHR pattern in labour resulting in operative delivery, (iii) umbilical vein blood pH at delivery less than 7.15, (iv) a 5-min Apgar score less than 7. RESULTS: Fifteen of the 48 pregnancies had a poor outcome; seven occurred in the 10 women delivered preterm (less than 37 weeks) and eight in the 36 women delivered between 37 and 42 weeks. Two women were delivered after 42 weeks and both infants had a good outcome. The results of Doppler studies of uterine and umbilical arteries, fetal biophysical profile or FHR variation were not significantly different between the two outcome groups. The 36 pregnancies delivered between 37 and 42 weeks were matched retrospectively for maternal age, parity and race with 36 pregnancies without APH; there was no significant difference in outcome between the women with unexplained APH and the matched comparison group. CONCLUSION: Morbidity related to unexplained APH is associated with preterm delivery rather than with damage to utero-placental function.
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