Table 2.
Echocardiographic findings in Ebstein's Anomaly
| Right ventricular region | Echocardiographic finding | N = 50 | |
| Inflow Tract | Tethering | I II III |
11 21 18 |
| Tricuspid Valve dysplasia | 50 | ||
| Dilatation of the anatomic atrioventricular ring | Mild Moderate Severe |
13 12 25 |
|
| Functional tricuspid opening | Low Dilated Stenotic |
50 39 11 |
|
| Tricuspid regurgitation | Mild Moderate Severe |
6 16 28 |
|
| Ventricular wall | Aneurysmal sac Normal |
42 8* |
|
| Trabecular portion | Uncovered | 100% | 10 |
| Covered by leaflet tethering | 25% 50% 100% |
10 15 15 |
|
| Multiple muscular bands in RV apex | 45 | ||
| Outflow tract (infundibulum) | Normal Stenotic Dilated |
8 11 31 |
|
| Pulmonary Valve | Normal Stenosis Atresia |
45 7 0 |
|
| Associated abnormalities | ASD (Ostium secundum) | 24 | |
| Patent foramen ovale | 11 | ||
| ASD + VSD | 6 | ||
| VSD | 2 | ||
| ISA | 1 | ||
| Mitral valve prolapse | 4 | ||
| Unicuspid mitral valve | 1 | ||
| Supravalvular mitral membrane | 1 | ||
| Noncompacted left ventricle | 1 | ||
| Left ventricle with moderator band | 1 | ||
| Right Cor triatrium | 1 | ||
| Transposition of great vessels* | 5 | ||
| Left ventricular double outlet * | 3 |
* Discordant ventriculoarterial connection. RV: Right ventricular; ASD: Atrial septal defect; VSD: Ventricular septal defect; ISA: Interatrial septal aneurysm.