Echocardiographic predictors of symptomatic patent ductus arteriosus in extremely-low-birth-weight preterm neonates

Identify echocardiographic parameters at

Serial echocardiograms obtained in 115 ELBW at or=1 indicated a large PDA, <1 but >or=0.5 moderate, and <0.5 small. Sensitivity, specificity, and positive predictive values (PPV) were determined for ELBW <27 weeks and >or=27 weeks gestational age.

Neonates with moderate to large PDA at

A moderate to large PDA determined from the PDA:LPA ratio at