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Isolated Aberrant Right Subclavian Artery Detected Prenatally In a Low-Risk Primigravida: A Case Report

Author

Listed:
  • Dr. Shri Ram Rundla

    (Senior Resident, Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, Bilaspur, Himachal Pradesh)

  • Anjali Bijarniya

    (MBBS, Internship, Parul institute of medical science & research Vadodara, Gujarat)

  • Tanvi Katoch

    (Assistant professor, Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, Bilaspur, Himachal Pradesh)

  • Komal Tiwari

    (DNB, Department of Obstetrics and Gynecology, R.D.B.P Jaipuriya hospital, Jaipur, Rajasthan)

Abstract

Background: Aberrant right subclavian artery (ARSA) is the most common aortic arch variant increasingly recognised during routine fetal echocardiography. Although historically linked to chromosomal abnormalities, emerging evidence shows that isolated ARSA in screen-negative pregnancies has a favourable prognosis. Case: We report a 24-year-old primigravida with a normal Level II ultrasound and a negative quadruple screening test. A routine fetal echocardiogram at 24 weeks demonstrated an isolated ARSA without any other cardiac or extracardiac anomalies. Pregnancy and delivery were uneventful. Postnatal echocardiography confirmed isolated ARSA, and the neonate remained asymptomatic. Conclusion: When identified as an isolated finding in the setting of normal aneuploidy screening, ARSA represents a benign vascular variant with excellent perinatal outcomes. Comprehensive counselling helps avoid unnecessary invasive testing and parental anxiety.

Suggested Citation

  • Dr. Shri Ram Rundla & Anjali Bijarniya & Tanvi Katoch & Komal Tiwari, 2026. "Isolated Aberrant Right Subclavian Artery Detected Prenatally In a Low-Risk Primigravida: A Case Report," International Journal of Research and Innovation in Applied Science, International Journal of Research and Innovation in Applied Science (IJRIAS), vol. 11(2), pages 794-796, February.
    • Handle: RePEc:bjf:journl:v:11:y:2026:i:2:p:794-796
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