Evolution of persistent patent ductus arteriosus (n=70) according to their haemodynamic characteristics at 3–4 days of life
| HNSPDA (n=30) | HSPDA (n=23) | IDHS (n=17) | |
|---|---|---|---|
| Spontaneous closure of the PDA, n (%) | 22 (73) | 18 (78) | 11 (65) |
| Death before discharge (PDA closure?), n (%) | 4 (13) | 2 (9) | 5 (29) |
| Survival at discharge (PDA closure?), n (%) | 4 (13) | 2 (9) | 1 (6) |
| Ligature of the PDA, n (%) | 0 | 1 (4) | 0 |
HNSPDA, haemodynamically non-significant patent ductus arteriosus; HSPDA, haemodynamically significant patent ductus arteriosus; IDHS, insufficient data on haemodynamic status of the patent ductus arteriosus; PDA, patent ductus arteriosus.