Related Experiment Video
Updated: Mar 13, 2026

Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction
Published on: June 29, 2013
Fetal Aberrant Subclavian Artery (ARSA): flow dynamics and its impact on fetal development assessed by doppler
Melih Bestel1, Elif Ucar1, Salim Sezer1
1Istanbul Esenyurt University Faculty of Health Sciences Department of Midwifery Istanbul Turkey Department of Midwifery, Faculty of Health Sciences, Istanbul Esenyurt University, Istanbul, Turkey.
Objective:
This study aimed to evaluate the hemodynamic characteristics of fetuses with isolated Aberran Right Subclavian Artery (ARSA) and compare them with a control group of normal fetuses using Doppler ultrasonography.
Methods:
A total of 93 fetuses were included in this prospective case-control study. Forty fetuses with isolated ARSA and 53 control fetuses with normal right subclavian arteries were analyzed. Doppler ultrasonographic parameters (Peak Systolic Velocity (PS), Pulsatility Index (PI), Resistive Index (RI), Time-Averaged Maximum Velocity (TAMAX), Heart Rate (HR)) were assessed and compared between the two groups.
Results:
No significant differences were found in the Doppler parameters (PS, PI, RI, TAMAX, HR) between the ARSA and control groups. Furthermore, there was no correlation between gestational age, fetal weight, and Doppler parameters in either group.
Conclusion:
The study supports the hypothesis that isolated ARSA is a benign anatomical variant without significant hemodynamic impact on fetal development. ARSA cases without associated cardiac or chromosomal anomalies do not appear to affect fetal growth.
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...
Assessing Blood pressure using a doppler ultrasound
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Development of Blood Vessels
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...

