学術雑誌論文 Prenatal Diagnosis of Interrupted Aortic Arch: Usefulness of Three-Vessel and Four-Chamber Views

Hirano, Yumika  ,  Masuyama, Hisashi  ,  Hayata, Kei  ,  Eto, Eriko  ,  Nobumoto, Etsuko  ,  Hiramatsu, Yuji

70 ( 6 )  , pp.485 - 491 , 2016-12 , Okayama University Medical School
ISSN:0386-300X
NII書誌ID(NCID):AA00508441
内容記述
Interrupted aortic arch (IAA) is fatal if not diagnosed. Prenatal diagnosis is helpful, but it is difficult to detect IAA and even more so to differentiate types A and B prenatally. Our objectives were to find a way to detect IAA using 2 views—three-vessel view (3VV) and four-chamber view (4CV)—and to differentiate between types A and B. We retrospectively analyzed fetal echocardiographic images and medical records of eight IAA patients. All eight patients had a ventricular septal defect (VSD) on 4CV. The aorta/main pulmonary artery (Ao/MPA) diameter ratio on 3VV was significantly low, which is characteristic of type B IAA. The left/right ventricular diameter (LV/RV) ratio on 4CV was 0.61± 0.17 for type A and almost 1.0 for type B. The thymus was not observed on 3VV in some type B IAA patients. These findings suggest that we could increase the number of prenatal diagnoses of IAA using the Ao/MPA ratio on 3VV and the presence of VSD on 4CV. Additionally, we could differentiate types A and B with the LV/RV ratio on 4CV, the Ao/MPA ratio, and the presence of a thymus on 3VV, which results in better management of IAA after birth.
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http://ousar.lib.okayama-u.ac.jp/files/public/5/54812/2017021513515319746/70_6_485.pdf

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