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

Table 4

Multivariable analysis for ductal closure.

	OR (95% CI)	𝑃
Gestational age^1	1.45 (0.93–2.25)	0.103
Preeclampsia	0.78 (0.11–5.60)	0.807
Antenatal steroids	0.83 (0.17–4.04)	0.817
Age at treatment start^2, days	0.82 (0.60–1.12)	0.213
Maximal ductal flow velocity^3, m/s	3.04 (1.01–9.22)	0.049

¹OR for every 1 week increase.
²OR for every 1 day increase.
³OR for every 1 m/s increase, adjusted for age at echocardiography and squared ductal diameter.