Table 2 Comparative characteristics of echocardiographic parameters of hsPDA in the first 3 days of life
Parameters | BPD/death (n = 25) | Without BPD (n = 27) | р |
|---|---|---|---|
Ductal diameter, mm | 2.5 (2.5–3.2)a | 2.5 (1.8–3) | 0.031 |
End-diastolic flow velocity < 50% of peak flow velocity | 20 (80)b | 12 (44) | 0.008 |
End-diastolic flow velocity > 0.3 m/s | 20 (80) | 8 (30) | 0.0003 |
Left atrium to aortic root diameter ratio > 1.5 | 12 (48) | 1 (4) | 0.0002 |
Retrograde diastolic blood flow in descending aorta | 18 (72) | 6 (22) | 0.0003 |