Umbilical artery flow velocity waveforms in fetuses dying with congenital anomalies
Article first published online: 19 AUG 2005
DOI: 10.1111/j.1471-0528.1988.tb12800.x
Issue
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BJOG: An International Journal of Obstetrics & Gynaecology
Volume 95, Issue 5, pages 478–482, May 1988
Additional Information
How to Cite
HSIEH, F.-J., CHANG, F.-M., KO, T.-M., CHEN, H.-Y. and CHEN, Y.-P. (1988), Umbilical artery flow velocity waveforms in fetuses dying with congenital anomalies. BJOG: An International Journal of Obstetrics & Gynaecology, 95: 478–482. doi: 10.1111/j.1471-0528.1988.tb12800.x
Publication History
- Issue published online: 19 AUG 2005
- Article first published online: 19 AUG 2005
- Received 28 April 1987, Accepted 28 July 1987
- Abstract
- References
- Cited By
Summary. Absent or reversed diastolic component in umbilical artery (UA) flow velocity waveform was observed in eight fetuses with major malformations. Because of the uncorrectable fetal conditions or the parents' reluctance to terminate the pregnancy, no interventions were undertaken and eventually all eight fetuses died in utero. The interval between the abnormal waveform recording and fetal death was between 1 and 7 days (mean 3.6 days). In two fetuses with abnormal diastolic flow, analysis of umbilical vein blood obtained by ultrasound-guided sampling revealed moderately severe acidosis and hypoxia (pH 7.228 and 7.241, Pco2 47.5 and 46.9 mmHg; Po2 14.6 and 14.7 mmHg, respectively). Our observation suggests that once the diastolic component of UA flow velocity waveforms becomes absent or reversed, the fetus is in a state of hypoxia and acidosis and fetal death is impending. This limited experience may help in formulating clinical management when using UA flow velocity waveforms in the monitoring of high-risk fetuses.

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