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Relationship between Umbilical Artery Pulsatility Index of Doppler Velocimetry and Umbilical Venous Blood Gases Measured by Cordocentesis

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Authors
Kim, Woo Jin; Kim, Syng Wook
Issue Date
1995-03
Publisher
Seoul National University College of Medicine
Citation
Seoul J Med, Vol.36 No.1, pp. 35-42
Keywords
CordocentesisDoppler velocimetryfetal acid-base status
Abstract
Cordocentesis of umbilical vein to obtain fetal blood pH, PCOz, and
P02 and Doppler eeloctmetrv as a preceding evaluation procedure were performed in 41
fetuses to assess fetal status in utero. The results of the two evaluation techniques, namely
pH, PCOz and POz of fetal venous blood and pulsatility index (PI) of Doppler velocimetry,
were individually correlated to determine if the procedure of Doppler velocimetry could be
performed in lieu of cordocentesis in assessing fetal acid-base status in utero. The
indications for cordocentesis were small-for-gestational age fetus (n=9), suspected fetal
thrombocytopenia (n=7), isoimmunization (n=5), need for rapidkaryotyping (n=2),
paternity determination (n= 1), cancer chemotherapy (n> 1), congenital malformation
(n> 15), and nonimmune hydrops fetalis (n> 1). The prevalence of fetal acidemia was 34%
(14/41). There was no significant difference in median gestational age at cordocentesis
between patients with acidemic fetus and those with nonacidemic fetus (P< 0.5).
Significant differences were found in both gas values and PI between acidemic and
nonacidemic fetus groups as PI and PCOz were significantly highedP< 0.00001, P()()()()1) while POz was significantly lower (P< 0.(05) in acidemic fetus group. Linear
regression lines drawn to see the relationships between PI and pH, PCOz, POz,
respectively, showed fair to good relationships with r values of -0.6334, 0.5747 and -0.
4699, in the same order, all with significance. In conclusion, it is conceivable' that for
close and continuous in utero monitoring of hypoxia-complicated fetuses, non-invasive
Doppler velocimetry could be performed in place of invasive cordocentesis and also for
assisting in decision-making for early delivery to avoid fetal compromise in utero.
ISSN
0582-6802
Language
English
URI
https://hdl.handle.net/10371/6866
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College of Medicine/School of Medicine (의과대학/대학원)Dept. of Medicine (의학과)The Seoul Journal of MedicineThe Seoul Journal of Medicine Vol. 36 No.1 (1995)
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