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01-04-2015 | Maternal-Fetal Medicine

Blood flow Doppler velocimetry measured during active labor

Authors: Joel Baron, Polina Shwarzman, Eyal Sheiner, Adi Y. Weintraub, Efrat Spiegel, Yael Sciaky, Doron Dukler, Reli Hershkovitz

Published in: Archives of Gynecology and Obstetrics | Issue 4/2015

Abstract

Purpose

To evaluate blood flow Doppler velocimetry during the first and second stages of active labor.

Methods

A prospective observational study was performed. Patients at term (37–42 weeks gestation), with normal fetal heart rate tracing patterns (categorized as category I) were examined during the first and second stages of labor. The sonographic parameters that were measured included the blood flow resistance of the maternal uterine artery (UtA) and umbilical artery (UA). Wilcoxon-matched pair test was used for the comparison of flows between the first and the second stages of labor.

Results

UtA and UA Doppler velocimetry measurements were obtained from 31 parturients. The left (LT) and right (RT) UtA pulsatility index (PI) was lower in the second stage of labor as compared with the first stage. However, only the LT side reached a statistically significant difference (0.88 ± 0.32 and 0.73 ± 0.18; P = 0.005). Compared with the first stage of labor, UA PI was significantly higher during the second stage of labor (0.72 ± 0.17 vs. 0.84 ± 0.33; respectively, P = 0.05).

Conclusion

Significant blood flow resistance changes in maternal as well as in fetal blood vessels occur during the second stage as compared with the first stage of active labor.

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Title: Blood flow Doppler velocimetry measured during active labor
Authors: Joel Baron
Polina Shwarzman
Eyal Sheiner
Adi Y. Weintraub
Efrat Spiegel
Yael Sciaky
Doron Dukler
Reli Hershkovitz
Publication date: 01-04-2015
Publisher: Springer Berlin Heidelberg
Published in: Archives of Gynecology and Obstetrics / Issue 4/2015
Print ISSN: 0932-0067
Electronic ISSN: 1432-0711
DOI: https://doi.org/10.1007/s00404-014-3489-9

At a glance: The STEP trials

Springer Medicine

Blood flow Doppler velocimetry measured during active labor

Abstract

Purpose

Methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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