Doppler measurements in infants without pulmonary branch stenosis (PBS), with PBS on the left, and with PBS on the left and right after closure of the ductus arteriosus
| No PBS (n=80) | PBS left (n=100) | p Value | PBS left and right (n=26) | p Value | |
| Peak velocities (cm/s) | |||||
| MPA | 80 (52–123) | 76 (46–133) | 0.79 | 77 (53–101) | 0.09 |
| RPA | 91 (49–143) | 94 (61–165) | 0.13 | 119 (85–173) | 0.0001 |
| LPA | 110 (71–213) | 132 (71–217) | 0.0002 | 157 (2–220) | 0.0001 |
| Acceleration (%) | |||||
| MPA to RPA | 12 (0–81) | 22 (0–136) | 0.02 | 60 (1–179) | 0.0001 |
| MPA to LPA | 36 (0–156) | 69 (0–178) | 0.0001 | 121 (2–247) | 0.0001 |
Values are median (range).
MPA, Main pulmonary artery; RPA, right pulmonary artery; LPA, left pulmonary artery.