Related Experiment Video
Updated: Aug 24, 2026

Continuous Telemetric In Utero Tracheal Pressure Measurements in Fetal Lambs
Published on: December 22, 2023
Idiopathic constriction of the fetal ductus arteriosus
1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, NC 27599-7516, USA. ttrevett@med.unc.edu
Abstract:
Constriction of the ductus arteriosus in the fetus is well studied, but mostly secondary to maternal exposure to indomethacin or other non-steroidal anti-inflammatory medications, or structural cardiac lesions. We present a case of a fetus presenting with right ventricular hypertrophy secondary to an S-shaped ductus arteriosus with distal constriction diagnosed by pulsed Doppler imaging. A review of the recent English literature of similar cases is presented.
Related Concept Videos
Fetal Circulation
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...
Mitral Stenosis I: Introduction
Aneurysm I: Introduction

