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Table 2 Characteristics of patent ductus arteriosus

From: Pilot observational study on haemodynamic changes after surfactant administration in preterm newborns with respiratory distress syndrome

Presence of patent ductus arteriosus @ T0 14/14
Transductal diameter @ T0 (mm); mean, SD 2.1, 0.3
Exclusive left-to-right transductal blood flow @ T0 8/14
Presence of right-to-left transductal blood flow @ T0 6/14
Proportion of right-to-left transductal blood flow @ T0; median, range 25.5%, 24-28