Abstract
Objectives: To assess associations between neonatal intensive care unit (NICU)-level patent ductus arteriosus (PDA) treatment rates (pharmacologic or surgical) and neonatal outcomes. Study design: This cohort study included infants born at 24-28 weeks of gestation and birth weight <1500 g in 2007-2015 in NICUs caring for ≥100 eligible infants in 6 countries. The ratio of observed/expected (O/E) PDA treatment rates was derived for each NICU by estimating the expected rate using a logistic regression model adjusted for potential confounders and network. The primary composite outcome was death or severe neurologic injury (grades III-IV intraventricular hemorrhage or periventricular leukomalacia). The associations between the NICU-level O/E PDA treatment ratio and neonatal outcomes were assessed using linear regression analyses including a quadratic effect (a square term) of the O/E PDA treatment ratio. Results: From 139 NICUs, 39 096 infants were included. The overall PDA treatment rate was 45% in the cohort (13%-77% by NICU) and the O/E PDA treatment ratio ranged from 0.30 to 2.14. The relationship between the O/E PDA treatment ratio and primary composite outcome was U-shaped, with the nadir at a ratio of 1.13 and a significant quadratic effect (P<.001). U-shaped relationships were also identified with death, severe neurologic injury, and necrotizing enterocolitis. Conclusions: Both low and high PDA treatment rates were associated with death or severe neurologic injury, whereas a moderate approach was associated with optimal outcomes.
Original language | English |
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Pages (from-to) | 34-39.e5 |
Journal | Journal of Pediatrics |
Volume | 220 |
DOIs | |
State | Published - May 2020 |
Bibliographical note
Publisher Copyright:© 2020 Elsevier Inc.
Funding
Funding and Conflicts of Interest Disclosure: Funding for iNeo was provided by a Canadian Institutes of Health Research Chair in Reproductive and Child Health Services and Policy Research (APR-126340 [to P.S.]). The Canadian Neonatal Network is supported by a team grant from the Canadian Institutes of Health Research (CTP 87518), the Ontario Ministry of Health and Long-Term Care , and the participating centers. The Finnish Medical Birth Register is governmentally funded and kept by the National Institute for Health and Welfare (THL). The Israel Neonatal Network very low birth weight infant database is partly funded by the Israel Center for Disease Control and the Ministry of Health . The Neonatal Research Network of Japan is partly funded by a Health Labour Sciences Research Grant from the Ministry of Health, Labour and Welfare of Japan. The Swedish Neonatal Quality Register is funded by the Swedish Government ( Ministry of Health and Social Affairs, Sweden ), the body of regional health care providers (County Councils), and the participating units. The Swiss Neonatal Network is partly funded by participating units in the form of membership fees. The funders played no role in the design and conduct of the study; the collection, management, analysis, and interpretation of the data; the writing, review, or approval of the manuscript; or the decision to submit the manuscript for publication. The authors declare no conflicts of interest. Funding and Conflicts of Interest Disclosure: Funding for iNeo was provided by a Canadian Institutes of Health Research Chair in Reproductive and Child Health Services and Policy Research (APR-126340 [to P.S.]). The Canadian Neonatal Network is supported by a team grant from the Canadian Institutes of Health Research (CTP 87518), the Ontario Ministry of Health and Long-Term Care, and the participating centers. The Finnish Medical Birth Register is governmentally funded and kept by the National Institute for Health and Welfare (THL). The Israel Neonatal Network very low birth weight infant database is partly funded by the Israel Center for Disease Control and the Ministry of Health. The Neonatal Research Network of Japan is partly funded by a Health Labour Sciences Research Grant from the Ministry of Health, Labour and Welfare of Japan. The Swedish Neonatal Quality Register is funded by the Swedish Government (Ministry of Health and Social Affairs, Sweden), the body of regional health care providers (County Councils), and the participating units. The Swiss Neonatal Network is partly funded by participating units in the form of membership fees. The funders played no role in the design and conduct of the study; the collection, management, analysis, and interpretation of the data; the writing, review, or approval of the manuscript; or the decision to submit the manuscript for publication. The authors declare no conflicts of interest. Funding and conflict of interest statements available in the Appendix (www.jpeds.com).
Funders | Funder number |
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Israel Center for Disease Control | |
Israel Neonatal Network | |
National Institute for Health and Welfare | |
Swedish Neonatal Quality Register | |
Swiss Neonatal Network | |
THL | |
Canadian Institutes of Health Research | CTP 87518 |
Ontario Ministry of Health and Long-Term Care | |
Ministry of Health, Labour and Welfare | |
Socialdepartementet | |
Ministeriet Sundhed Forebyggelse |
Keywords
- morbidity
- mortality
- neonatal intensive care
- patent ductus arteriosus
- preterm infants