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- Title
Main pulmonary artery cross-section ratio is low in fetuses with tetralogy of Fallot and ductus arteriosus-dependent pulmonary circulation.
- Authors
Ebishima, Hironori; Kurosaki, Kenichi; Yoshimatsu, Jun; Shiraishi, Isao
- Abstract
<bold>Objectives: </bold>This study aimed to determine fetal echocardiographic features of tetralogy of Fallot in association with postnatal outcomes.<bold>Methods: </bold>The Z-scores of the main and bilateral pulmonary arteries and the aorta were measured, and the following variables were calculated in 13 fetuses with tetralogy of Fallot: pulmonary artery-to-aorta ratio and main pulmonary artery cross-section ratio - the main pulmonary artery diameter squared divided by the sum of the diameter squared of the left and right pulmonary arteries. Fetuses were classified as having ductus arteriosus-dependent or ductus arteriosus-independent pulmonary circulation.<bold>Results: </bold>We included two infants with pulmonary atresia and six infants with ductus-dependent pulmonary circulation, who underwent systemic-to-pulmonary shunt surgeries at ⩽1 month of age. The Z-scores of the main pulmonary artery and the pulmonary artery-to-aorta ratio in fetuses with ductus-dependent pulmonary circulation were lesser than those in fetuses with ductus independence, but not significantly. The main pulmonary artery cross-section ratio in fetuses with ductus dependence was significantly lesser (0.65±0.44 versus 1.56±0.48, p<0.005). Besides, the flow of the ductus arteriosus was directed from the aorta to the pulmonary artery in the ductus arteriosus-dependent group during the fetal period.<bold>Conclusions: </bold>The main pulmonary artery cross-section ratio was the most significant variable for predicting postnatal outcomes in fetuses with tetralogy of Fallot.
- Subjects
TETRALOGY of Fallot; ECHOCARDIOGRAPHY; DUCTUS arteriosus; PULMONARY artery; PULMONARY atresia; DIAGNOSIS; DIAGNOSIS of fetal diseases; PULMONARY circulation; FETAL heart; FETAL diseases; FETAL ultrasonic imaging; GESTATIONAL age; PULMONARY valve; PHYSIOLOGY
- Publication
Cardiology in the Young, 2017, Vol 27, Issue 6, p1162
- ISSN
1047-9511
- Publication type
journal article
- DOI
10.1017/S1047951116002675