Perfusion Index—Bedside Diagnosis of Hemodynamically Significant Patent Ductus Arteriosus

Patent ductus arteriosus (PDA) is a significant problem in preterm babies  0.05). Ten infants had HsPDA. The ΔPI values in Groups A and B differed significantly on Days 1 and 3 (Day 1: 1.06 ± 0.3 vs. 0.54 ± 0.2 and Day 3: 1.11 ± 0.15 vs. 0.57 ± 0.3). The area under the receiver operating characteristic curve was significant for ΔPI on Days 1 and 3. The ΔPI > 0.85 on Day 1 and > 0.95 on Day 3 had a sensitivity and specificity of 80% and 94% and 80% and 88.2%, respectively, for diagnosing HsPDA.ΔPI is a useful, simple parameter, which could help in the assessment of PDA in preterm babies.