Right ductus arteriosus: Facts and theory

Moshe Bronshtein, Etan Z. Zimmer, Shraga Blazer, Zeev Blumenfeld

Research output: Contribution to journalArticlepeer-review


Objective: To report fetal right-sided persistent ductus arteriosus (RPDA) in association with right aortic arch (RAA). Study design: Extensive sonographic fetal anatomical scans were consecutively performed on 19,874 private, self-referred pregnant women who wanted early sonographic detection of fetal anomalies. Results: Of 19,874 transvaginal (TVS) sonographic examinations 40 fetuses had right aortic arch (RAA) and four of them (10%) had RPDA. We also diagnosed seven cases of RPDA with involvement of the left aortic arch where a right-curving pattern ("L" shape) parallel to the right pulmonary artery was suggestive of Rt. DA with left aortic arch. Only one (9%) of the RPDA cases was associated with a cardiac anomaly (double outlet right ventricle). None of the other eight RPDA cases had any discernible anomalies, and all of the fetuses with RPDA had normal karyotypes. Conclusions: In 10% of the fetuses with right aortic arch the ductal arch was also on the right side. An unusual-looking DA may be a RPDA associated with the left aortic arch. In most cases, the RPDA is a normal variant not associated with other anomalies.

Original languageEnglish
Pages (from-to)282-288
Number of pages7
JournalEuropean Journal of Obstetrics and Gynecology and Reproductive Biology
Issue number2
StatePublished - Dec 2011
Externally publishedYes


  • Fetal malformation
  • Fetal ultrasound
  • Right aortic arch
  • Right ductus arteriosus

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynecology


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