Abstract
Objective: To determine whether there is a difference in acid-base status at the time of cordocentesis between fetuses with symmetric and asymmetric intra- uterine growth restriction (IUGR). Study Design: Non-anomalous singleton fetuses with IUGR who underwent fetal blood sampling for rapid karyotype analysis from 1992–1995 were retrospectively identified. Cases with gestational age <24 weeks, abnormal karyotype, or evidence of congenital infection were excluded. Fetuses were divided into two groups based on Head Circumference/ Abdominal Circumference Ratio (HC/AC). The asymmetric-IUGR group had HC/AC ≥95% tile for GA, and the symmetric-IUGR group had HC/AC <95% tile. GA adjusted values of umbilical venous pH, pCO2, pO2, HCO3, hemoglobin and reticulocyte count were calculated by subtracting the mean values for GA from the observed and compared between groups. Results: Both symmetric-IUGR (n=7) and asymmetric-IUGR (n=9) had umbilical venous pH and pO2 levels lower than GA normative values. However, there were no differences between groups for any of the parameters studied. Conclusions: Fetuses with symmetric and asymmetric IUGR due to UPI display a similar degree of acid-base impairment.
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Received: 20 March 2000 / Accepted: 25 July 2000
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Blackwell, S., Moldenhauer, J., Redman, M. et al. Relationship between the sonographic pattern of intrauterine growth restriction and acid-base status at the time of cordocentesis. Arch Gynecol Obstet 264, 191–193 (2001). https://doi.org/10.1007/s004040000106
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DOI: https://doi.org/10.1007/s004040000106