Abstract
Patent ductus arteriosus (PDA) is associated with neonatal morbidities in high-risk preterm infants. Early neonatal treatment by ibuprofen induces the ductus arteriosus (DA) closure in approximatively 60% of infants. Dose escalation of ibuprofen according to postnatal age has been suggested for improving the DA closure rate. The aim of this study was to assess the efficacy and tolerance of an increasing dose regimen of ibuprofen. This single-center retrospective cohort study involved infants hospitalized from 2014 to 2019 in our neonatal unit. Selection criteria were gestational age < 30 weeks, birth weight < 1000 g, and treatment by ibuprofen. Three dose levels were used and consisted of a daily intravenous injection of ibuprofen-tris-hydroxymethyl-aminomethane (ibuprofen-THAM) for three consecutive days: (i) 10 −5 −5 mg/kg before the 70th h of life (H70) (dose level 1), (ii) 14 −7 −7 mg/kg between H70 and H108 (dose level 2), (iii) 18 −9 −9 mg/kg after H108 (dose level 3). The ibuprofen-induced DA closure was compared between ibuprofen schedules, and the Cox proportional-hazard regression was performed to identify factors associated with the ibuprofen efficacy. Tolerance was assessed through renal function, acidosis, and platelet count. One hundred forty-three infants met the inclusion criteria. The ibuprofen-induced DA closure was observed in 67 infants (46.8%). One course of ibuprofen at dose level 1 was more efficient in closing the DA than other schedules (dose level 1, one course (n = 70): 71%, dose level 2 or 3, one course (n = 20): 45%, two-course schedules (n = 53): 15%, p < 0.0001). Independent factors associated with ibuprofen-induced DA closure were a complete antenatal schedule of steroids (p = 0.001), a lower CRIB II score (p = 0.009), and a lower and earlier exposure to ibuprofen (p < 0.0001 and p = 0.002). No severe side effects were observed. Neonatal mortality and morbidities were similar regardless of the infant’s response to ibuprofen.
Conclusion: Increasing ibuprofen doses with postnatal age failed to reach an efficacy similar to earlier treatment. Although the infant response to ibuprofen was likely to depend on multiple factors, the optimal use of ibuprofen included its early initiation.
What is Known: • Ibuprofen is the current first-line treatment for patent ductus arteriosus during the early neonatal period in very preterm infants. • However, the ibuprofen efficacy rapidly declined with postnatal age during the first week of life. A dose escalation of ibuprofen according to postnatal age has been suggested to improve the ibuprofen-induced ductus arteriosus closure. | |
What is New: • The rapid drop of ibuprofen’s ability to close hemodynamically significant patent ductus arteriosus persisted beyond the postnatal day 2 despite the dose adjustment arguing for an early initiation to optimize its efficacy. • The early selection of patients who will suffer from patent ductus arteriosus-related morbidities and who will positively respond to ibuprofen is an issue that could determine the future place of ibuprofen in the patent ductus arteriosus management. |
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Abbreviations
- CI:
-
Confidence interval
- CRIB II score:
-
Clinical risk index for babies II score
- DA:
-
Ductus arteriosus
- hsPDA:
-
Hemodynamically significant patent ductus arteriosus
- Ibuprofen-THAM:
-
Ibuprofen-tris-hydroxymethyl-aminomethane
- PDA:
-
Patent ductus arteriosus
- SD:
-
Standard deviation
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GF designed the study protocol, obtained ethics approval, performed the preliminary and final data analysis, and contributed to the writing and critical reading of the manuscript. LC actively participated in the patient screening and enrollment, the data collection, and the preliminary and final data analysis. LC wrote the first draft of the manuscript. AB contributed to the writing and critical reading of the manuscript.
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The study was performed in accordance with the Declaration of Helsinki. The local ethics committee (2020−047) and local data protection authority (2020−063) approved the study protocol.
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Carneiro, L., Bouissou, A. & Favrais, G. Increasing the dose of ibuprofen with postnatal age to close a hemodynamically significant patent ductus arteriosus in very preterm infants. Eur J Pediatr 182, 3527–3535 (2023). https://doi.org/10.1007/s00431-023-04986-2
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DOI: https://doi.org/10.1007/s00431-023-04986-2