This is a 23 weeks primi gravida with IUGR.All fetal biometric values were at 5 th centile .
This cadiac defect was noted. Is this a DORV?
Please comment on this.
Her NT and DV flow were normal at 12 weeks .Nasal bone was present.
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Permalink Reply by Samia Aly, MD. RDMS on April 14, 2011 at 1:09pm
Permalink Reply by Lisa M. Allen on May 24, 2011 at 10:23pm Were any other structural anomalies noted?
The first image demonstrates a large VSD. Without seeing the case in real-time, one could only speculate additional findings. This could represent an overriding aorta (where the aortic root sits over the VSD). This would be strongly suspicious for Tetralogy of Fallot. The two scanning planes useful to help diagnose TOF are the five-chamber view that will demonstrate the VSD with an overriding aorta and the three-vessel-view where the main pulmonary artery will be smaller than the aorta (sign of pulmonary stenosis).
If the RVOT was not seen with confidence, then you might also consider a common arterial trunk (persistent truncus arteriosus).
DORV is rare (1-1.5% of all cases of children born with congenital heart disease). In this condition, both great arteries arise either entirely or predominantly from the morphologic right ventricle. TOF and TGA are the two main differential diagnoses for DORV. DOVR is associated with chromosome abnormalities (T13, T18 and 22q11 deletion). Has amniocentesis been offered/performed?
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