Research Article

A High Ductal Flow Velocity Is Associated with Successful Pharmacological Closure of Patent Ductus Arteriosus in Infants 22–27 Weeks Gestational Age

Table 1

Perinatal characteristics.

Ductus closed ( )Ductus persistent ( )

Gestational age, weeks (range)25+5 (22+2–27+4)24+3 (22+3–27+4)0.047
Birth weight, grams (range)718 (432–1217)595 (440–1052)0.363
Male gender (%)20 (69)14 (52)0.274
Preeclampsia (%)5 (17)5 (19)1.000
Antenatal steroids (%)23 (79)22 (81)1.000
Cesarean section (%)17 (59)15 (56)1.000
Surfactant (%)28 (97)26 (96)1.000