2010-04-06-14 Incomplete atrioventricular septal defect © Chauhan www.TheFetus.net
Incomplete atrioventricular septal defect
Binodini M.Chauhan, MD.
This is a 24 year-old G1P0 with non-contributive family or personal history. The patient was referred to our department at 30 weeks of gestation for a second opinion ultrasound for suspicion of cardiac anomaly. She was admitted to the hospital 1 week before, because of premature rupture of membranes. The fetal estimated weight was lacking 3 weeks. We did not found any other anomalies except those of the heart.
They were following ultrasound findings while performing a cardiac scan:
- Incomplete atrioventricular septal defect, absent septum primum
- Atrioventricular valves are inserted at the same level of the interventricular septum
- Both right atrium and ventricle are bigger then the left side
- Dilatation of the pulmonary artery
- Ventricular septal defect, Doppler shows bi-directional shunting
Images 1,2: Images show atrioventricular septal defect, there is an absent septum primum. AV valves and the crux are inserted on the same level of the interventricular septum.
Images 3,4: Image 3 shows the left outflow tract. Image 4 shows a right outflow tract, note that pulmonary artery is dilated, the diameter is larger then aorta.
Images 5,6: Image 5 shows the bifurcation of the pulmonary artery into the left and right pulmonary artery. Image 6 shows a three-vessel view, pulmonary artery is dilated.
Images 7,8: Image 7 shows the left outflow tract, aorta arising from the left ventricle. Image 8 shows the ventricular septal defect indicated by the arrow.
Images 9,10: Ventricular septal defect. Doppler imaging showing the blood flow through the ventricular septal defect.