Table 1

Doppler measurements in infants with and without patent ductus arteriosus

Ductus arteriosus open (n=79)Ductus arteriosus closed (n=253)p Value
MedianRangeMedianRange
Peak velocities (cm/s)
 MPA6346–957946–1330.0001
 RPA7144–1189749–1730.0001
 LPA8041–17512771–2400.0001
Acceleration (%)
 MPA to RPA110–72221–1790.0001
 MPA to LPA180–113632–2470.0001
  • MPA, Main pulmonary artery; RPA, right pulmonary artery; LPA, left pulmonary artery.