Platelet counts and C-reactive protein in preterm infants with patent ductus arteriosus

Introduction: Patent ductus arteriosus (PDA) is a common disorder in premature infants which causes heart failure. Platelets and C-reactive protein (CRP) play an important role in closure. Objectives: The purpose of this study was to evaluate serum CRP and plasma platelet count in preterm infants with PDA compared to infants without PDA. Patients and Methods: This case-control study was conducted on premature infants with PDA admitted to Imam Khomeini hospital in Ahvaz, Iran (2020-2021). A group of 120 infants with inclusion criteria was selected and divided into two groups of 60 subjects. The preterm infant with PDA and without PDA was defined as the case and control group, respectively. Platelet count, serum CRP, and an echocardiogram were assessed in all infants. The subjects were matched by gender, gestational age, and birth weight. Results: The mean platelet count was 194.67±74.03 (×103 /mm3 ) in the neonate with PDA, and it was significantly lower than in neonate without PDA (P=0.04). The mean of serum CRP was significantly different in neonates with PDA (11.62±5.96 mg/L) compared to neonates with closed arterial ducts (8.52±3.97 mg/L; P=0.002). Additionally, PDA was associated with high platelet distribution width (PDW). Conclusion: The findings of this study revealed that PDA is associated with a low-number of platelets and high serum levels of CRP in preterm neonates. It is suggested that further studies with a higher sample size on platelet count and/or function be performed in PDA patients to understanding more about the cause of PDA and to discover novel and beneficial aims in these cases