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DOI: 10.1055/s-0039-1683438
The Effect of Antenatal Vaginal Progesterone Administration on Uterine, Umbilical, and Fetal Middle Cerebral Artery Doppler Flow: A Cohort Study

Abstract
Objective This study aimed to evaluate the effect of vaginal progesterone (P) administration during the second and third trimesters of pregnancy on Doppler velocimetry of uterine, umbilical, and middle cerebral vessels.
Study Design A prospective cohort study conducted on 80 women at risk for preterm labor. Uterine artery, umbilical artery, and middle cerebral artery (MCA) Doppler indices were measured before and after 1 week of administration of 200 mg twice daily vaginal P. The primary outcome parameter was the change of MCA pulsatility index (PI) after P administration. Secondary outcomes included changes in uterine artery and umbilical artery Doppler measurement.
Results There was no significant changes of umbilical artery resistance index (RI) (0.69 ± 0.049 vs. 0.68 ± 0.041), umbilical artery PI (1.14 ± 0.118 vs. 1.11 ± 0.116), uterine artery RI (0.66 ± 0.12 vs. 0.66 ± 0.107), uterine artery PI (1.00 ± 0.26 vs. 1.016 ± 0.24), and MCA PI (1.27 ± 0.18 vs. 1.26 ± 0.23) measurements before and after 1 week of P administration, respectively.
Conclusion Administration of vaginal P has no significant effects on uterine artery, umbilical artery, and MCA Doppler indices.
Keywords
progesterone - preterm birth - umbilical artery Doppler - uterine artery Doppler - middle cerebral artery DopplerAuthors' Contributions
A.M.M.: Project development and revision of the article. A.Y.S.: Project development and revision of data. E.A.H.: Project development, data collection, and revision of the article. A.A.: Review of literature, data collection, and article writing. D.S.E.: Review of literature, data analysis, and article writing. A.E.: Article writing. S.D.: Article writing. M.D.: Data reanalysis and revision of the article. Y.Z.: Data reanalysis and revision of the article. H.B.: Data reanalysis and revision of the article.
Note
Informed consent was obtained from all individual participants included in the study.
Ethical Approval
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. We obtained Kasr Alainy local ethical committee approval.
Note
Clinical trial registration number is ClinicalTrials.gov IDNCT03292939.
Publication History
Received: 29 December 2018
Accepted: 05 February 2019
Publication Date:
13 March 2019 (online)
© 2019. Thieme. All rights reserved.
Thieme Medical Publishers, Inc.
333 Seventh Avenue, 18th Floor, New York, NY 10001, USA
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