| Causes | No. | % of Total cases |
| Embolization | 2 | 0.68 |
| Type C PDA | 14 | 4.82 |
| Type B PDA + PHT | 1 | 0.34 |
| Type E PDA | 1 | 0.34 |
| Interrupted IVC with azygus continuation | 1 | 0.34 |
| PDA with LPA stenosis | 1 | 0.34 |
| Total | 20 | 6.89 |