Answer to the case of the week # 521
July 16, 2020 - August 6, 2020
Dr Ho F.1
, Dr Cuillier F.2
, Dr Arsac L.-A.3
1. Radiologist, private sector, 97400 Saint-Denis, Reunion Island, France.
2. Department of Obstetrics, Felix Guyon Hospital, Reunion Island, France.
3. Department of Pediatric Cardiology, Felix Guyon Hospital, 97400 Saint-Denis, Reunion Island, France.
A 20-year-old woman, G1P0, with unremarkable history. Screening for down syndrome was normal. Our US examination at the first trimester and second trimester revealed the following findings:
Images 1 and 2 - 11 weeks of pregnancy: heart US examination at 1st trimester is limited, however some elements can be examinated such as heart location in the thorax and heart axis. Colour doppler is also used to assess anterograde chamber filling and anterograde blood ejection through the output vessels. Here, heart location and axis are normal. Image 1 shows 4 chamber view with 2 ventricles with anterograde filling. Image 2 shows outflow tracts. The expected pattern would be a "V-shaped" image representing the ductus arteriosus joining the aorta. Instead of that, oddly here there is only one big tube showing an anterograde flow.