Anatomical and hemodynamic changes in the umbilical cord vascular bed in the intranatal period

Objective: to analyze anatomical and hemodynamic transformations in the umbilical cord vascular bed during labor using computer modeling of physiological processes and the associated change in the external pressure gradient. Material and methods . The first stage of this work included three-dimensional modeling in Ansys Fluent 2021 of a single straight umbilical artery under external pressure of 120 mmHg. The second stage consisted of 3D modeling of the umbilical vessel organ complex surrounded by fetal mucous connective tissue under similar external pressure.