Differential Determinants of Patent Ductus Arteriosus Outcomes for Prematurity of Varying Birth Body Weight
Abstract Background Patent ductus arteriosus (PDA) remains critically encountered every day for pediatricians and neonatologists along with the medical progress in prematurity neonatal care. In this study, we aimed to stratify premature neonates by their initial postnatal 24-hour clinical characteristics and maternal and gestational histories to early predict the risk of PDA at unfavorable treatment responses. Methods A retrospective analysis was conducted on preterm newborns who were consecutively admitted to a pediatric-neonatal-intensive-care-unit from 2008 to 2013 except some exclusion criteria. Data relating to birth histories, maternal histories, and clinical data from the first 24 hour of life were collected and analyzed according to three types of PDA outcomes—non-treated, medically-responded, and surgically-ligated PDA. Univariate analysis was performed using Mann-Whitney U test and Chi-square test or Fisher’s exact test. Multivariate analysis was performed using multinomial logistic regression to determine the independent risk factors for the PDA outcome. Results This study involved 682 preterm infants, composed of 352 male and 330 female neonates with median gestational age of 31 (interquartile, IQR: 28–34) week and BBW of 1360 (IQR: 1085–1861) g. Inclusively, 83% of PDAs in prematurity did not need any medical or surgical treatment, 8.8% of PDA medically responded and 7.9% needed surgical ligation. All subjects were further sub-grouped according to birth body weight (BBW) owing to significant differences in clinical characteristics and the rate of surgically-ligated PDA between neonates with BBW less than 1500 g (as the very low birth weight, VLBW group) and those with BBW greater or equal to 1500 g (as the non-VLBW group). The VLBW group had a significantly higher percentage of surgically-ligated PDA. For the VLBW group, the amount of first 24-hour intravenous fluid per kilogram, surfactant use and gynecological disorder were independent factors in predicting PDA outcomes. For the non-VLBW group, placenta previa, parity, BBW and intrauterine growth retardation were independent factors. Conclusions Neonatal care should be meticulously personalized according to their BBW. The first 24-hour perinatal factors, maternal and gestational history plays differential importance on PDA treatment outcome based on BBW.