Abstract
A prospective study was undertaken in children with SV(7), straddling tricuspid valve(STV)(2), tricuspid atresia(TA)(3) and complete atrio-ventricular canal(CAVC)(5) to determine the reliability of 2DE to diagnose SV. Left parasternal long axis(LAV), short axis (SA), apical 4 chamber(A4C) and subcostal views were employed and the findings were compared to angiographic data. The 2DE features of SV are: 1)In LAV atrioventricular valve-semilunar valve(AVV-SLV) discontinuity was identified. No anterior outflow chamber(AOC) was imaged. 2)In the SA scan from the apex to base, the AOC in the levo position was imaged in those patients with L-TGA. No AOC was identified in 2 patients with dextrocardia, and one patient with bilateral conus. All patients had an irregularly shaped ventricular cavity due to multiple papillary muscles distributed circumferentially around the chamber. 3)The A4C view identified the number of AVV. The bulboventricular ridge, however, was not consistently imaged. In contrast those patients with TA and STV had: 1)AVV-SLV continuity in LA; 2)Two normally positioned papillary muscles in the left ventricular cavity in SA. A hypoplastic right ventricle and ventricular septal defect was seen in all patients with TA in the A4C view. The findings in CAVC were similar to those previously reported. The subcostal view was not helpful. The most optimal 2DE views to differentiate SV from similar congenital defects are the SA scan combined with the A4C view.
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Zednikova, M., Sessa, T., Heins, H. et al. 217 TWO-DIMENSIONAL ECHOCARDIOGRAPHIC (2DE) FEATURES OF THE SINGLE VENTRICLE (SV). Pediatr Res 15 (Suppl 4), 476 (1981). https://doi.org/10.1203/00006450-198104001-00226
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DOI: https://doi.org/10.1203/00006450-198104001-00226