Blood flow velocity parameters in the ductus venosus in fetuses with congenital heart defects
Yarygina T.A., Gasanova R.M., Shchegolev A.I., Gus A.I., Shmakov R.G.
Objective: To investigate absolute flow velocity parameters in the ductus venosus of fetuses with congenital heart defects (CHD).
Materials and methods: In this cross-sectional study, we assessed the velocities of a-waves, S-waves, D-waves, and time-averaged maximum velocity (TAMX) in the ductus venosus of a total cohort of 171 fetuses with CHD, including 47 fetuses with right heart defects (subgroup 1) and 124 fetuses with other forms of defects (subgroup 2). A comparative analysis of the obtained indicators was conducted across three gestational intervals: 18–21 weeks (x1), 22–29 weeks (x2), and 30–40 weeks (x3) of pregnancy.
Results: The a-wave velocity below the 5th percentile was observed in 18.1%, 21.3%, and 16.9% of cases in the overall cohort and in subgroups 1 and 2, respectively. In the overall group and subgroup 2, there was a significant increase in the a-wave, S-wave, D-wave, and TAMX velocities in each subsequent gestational interval (p<0.001), consistent with the findings in the healthy population. In subgroup 1, there were no significant changes in a-wave velocity between gestational intervals (p>0.05), whereas increases in S-wave, D-wave, and TAMX values were recorded only between the first and third gestational intervals (x1–x3) (p=0.001). No differences were observed between the gestational intervals x1–x2 and x2–x3 (p>0.05). Comparative analysis of a-wave, S-wave, and D-wave velocities and TAMC did not reveal statistically significant differences between the study subgroups (p>0.05).
Conclusion: A decrease in the velocity of oxygenated blood flow to the fetal heart during the atrial contraction phase (a-wave) was observed in 16–21% of fetuses with cardiac pathology, indicating an increased risk of hypoxic complications. The lack of a physiological increase in flow velocities in the ductus venosus among fetuses with right heart defects underscores the need for additional antenatal monitoring in these patients.
Authors' contributions: Yarygina T.A., Shmakov R.G. – conception and design of the study; Yarygina T.A., Gasanova R.M. – drafting of the manuscript; Yarygina T.A., Shchegolev A.I. – data collection and analysis; Gasanova R.M., Shchegolev A.I., Gus A.I., Shmakov R.G. – editing of the manuscript.
Conflicts of interest: The authors have no conflicts of interest to declare.
Funding: The study was conducted within the framework of the applied scientific topic 123020300017-1.
Ethical Approval: The study was reviewed and approved by the Research Ethics Committee of the A.N. Bakulev NMRC of Cardiovascular Surgery, Ministry of Health of Russia.
Patient Consent for Publication: All patients provided informed consent for the publication of their data.
Authors' Data Sharing Statement: The data supporting the findings of this study are available upon request from the corresponding author after approval from the principal investigator.
For citation: Yarygina T.A., Gasanova R.M., Shchegolev A.I., Gus A.I., Shmakov R.G.
Blood flow velocity parameters in the ductus venosus in fetuses with congenital heart defects.
Akusherstvo i Ginekologiya/Obstetrics and Gynecology. 2025; (9): 98-108 (in Russian)
https://dx.doi.org/10.18565/aig.2025.214
Keywords
References
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Received 12.08.2025
Accepted 26.08.2025
About the Authors
Tamara A. Yarygina, PhD, Head of the Ultrasound Diagnostics Department, Academician V.I. Krasnopolsky Moscow Regional Research Institute of Obstetrics and Gynecology, 101000, Russia, Moscow, Pokrovka str., 22a; Researcher at the Perinatal Cardiology Center, A.N. Bakulev National Medical Research Center of Cardiovascular Surgery, Ministry of Health of Russia, 121552, Russia, Moscow, Roublyevskoe Shosse, 135; Associated Professor at the Department of Ultrasound Diagnostics of the Faculty of Continuing Medical Education of the Medical Institute, Patrice Lumumba Peoples’ Friendship University of Russia, 127015, Russia, Moscow, Pistsovaya str., 10,+7(495)414-78-75, tamarayarygina@gmail.com, https://orcid.org/0000-0001-6140-1930
Rena M. Gasanova, Dr. Med. Sci., Head of the Perinatal Cardiology Center, A.N. Bakulev National Medical Research Center for Cardiovascular Surgery, Ministry of Health of Russia, 121552, Russia, Moscow, Roublyevskoe Shosse, 135; Physician of Ultrasound Diagnostics, Department of Ultrasound and Functional Diagnostics, Academician V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Ministry of Health of Russia, 117997, Russia, Moscow, Ac. Oparin str., 4, rmgasanova@bakulev.ru, https://orcid.org/0000-0003-3318-1074
Alexander I. Shchegolev, Dr. Med. Sci., Professor, Head of the 2nd Pathoanatomical Department, Academician V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Ministry of Health of Russia, 117997, Russia, Moscow, Ac. Oparin str., 4, +7(495)531-44-44, ashegolev@oparina4.ru,
https://orcid.org/0000-0002-2111-1530
Alexander I. Gus, Dr. Med. Sci., Professor, Chief Researcher at the Department of Ultrasound and Functional Diagnostics, Academician V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Ministry of Health of Russia, 117997, Russia, Moscow, Ac. Oparin str., 4; Head of the Department of Ultrasound Diagnostics of the Faculty of Continuing Medical Education of the Medical Institute, Patrice Lumumba Peoples’ Friendship University of Russia, 127015, Russia, Moscow, Pistsovaya str., 10, a_gus@oparina4.ru, https://orcid.org//0000-0003-1377-3128
Roman G. Shmakov, Dr. Med. Sci., Professor of the Russian Academy of Sciences, Director, Academician V.I. Krasnopolsky Moscow Regional Research Institute of Obstetrics and Gynecology, 101000, Russia, Moscow, Pokrovka str., 22a; Head of the Department of Obstetrics and Gynecology, Faculty of Advanced Medical Studies, M.F. Vladimirsky Moscow Regional Research Clinical Institute, mdshmakov@mail.ru https://orcid.org/0000-0002-2206-1002
Corresponding author: Tamara A. Yarygina, tamarayarygina@gmail.com