Table 2. Differences detected by echocardiography between the infant- and adult-types.
| Parameter | Infant-type (n=20) | Adult-type (n=10) | P value |
|---|---|---|---|
| ALCAPA | |||
| RCA dilated (%) | 18 (90.00) | 10 (100.00) | 0.849 |
| LCA dilated (%) | 6 (30.00) | 10 (100.00) | 0.057 |
| CA | No advantage | RCA dominance | |
| Development of collateralization (%) | 12 (60.00) | 10 (100.00) | 0.375 |
| Collateral circulation volume | Inadequate | Adequate | |
| Enhanced echogenicity of LV papillary muscles (%) | 18 (90.00) | 0.00 | 0.018 |
| Wall motion abnormalities | Anterior and lateral wall hypokinesis | None | |
| LV size | Dilated | Normal or mildly dilated | |
| Mitral regurgitation, n (%) | |||
| Mild | 12 (60.00) | 10 (100.00) | 0.375 |
| Moderate | 6 (30.00) | 0.00 | 0.478 |
| Severe | 2 (10.00) | 0.00 | 0.325 |
| RCA/AO | >0.12 | >0.20 | |
ALCAPA, anomalous origin of the left coronary artery from the pulmonary artery; RCA, right coronary artery; LCA, left coronary artery; CA, coronary artery; LV, left ventricular; RCA/AO, right coronary artery to aortic annulus ratio.