a controlled clinical trial comparing early closure ( mean = 48.8 hours ) of the patent ductus arteriosus using indomethacin to conventional medical management , with intervention only after cardiopulmonary decompensation ( mean = 167.4 hours ) , was undertaken in 24 preterm infants with severe respiratory distress syndrome and evidence of pda .
C0021246
indomethacin
C0013274
pda