Abstract
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.
Keywords
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Article info
Publication history
Published online: September 09, 2011
Accepted:
July 11,
2011
Received in revised form:
July 1,
2011
Received:
February 20,
2011
Identification
Copyright
© 2011 Elsevier Ireland Ltd. Published by Elsevier Inc. All rights reserved.
