Mortality and significant neurosensory impairment in preterm infants: an international comparison. Issue 3 (11th September 2021)

• Record Type: Journal Article
• Authors: Chevallier, Marie; Debillon, Thierry; Darlow, Brian A; Synnes, Anne R; Pierrat, Véronique; Hurrion, Elizabeth; Yang, Junmin; Ego, Anne; Ancel, Pierre Yves; Lui, Kei; Shah, Prakeshkumar S; Luu, Thuy Mai
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• Is Part Of: Archives of disease in childhood. Volume 107:Issue 3(2022)
• Page Start: 317
• Page End: 323
• Publication Date: 2021-09-11
• Subjects: neonatology -- neurology; Infants -- Diseases -- Periodicals; Newborn infants -- Diseases -- Periodicals; Fetus -- Diseases -- Periodicals; 618.920105
• DOI: 10.1136/archdischild-2021-322288
• Languages: English
• ISSNs: 1359-2998

Abstract

Abstract : Objective: To compare mortality and rates of significant neurosensory impairment (sNSI) at 18–36 months' corrected age in infants born extremely preterm across three international cohorts. Design: Retrospective analysis of prospectively collected neonatal and follow-up data. Setting: Three population-based observational cohort studies: the Australian and New Zealand Neonatal Network (ANZNN), the Canadian Neonatal and Follow-up Networks (CNN/CNFUN) and the French cohort Etude (Epidémiologique sur les Petits Ages Gestationnels: EPIPAGE-2). Patients: Extremely preterm neonates of <28 weeks' gestation in year 2011. Main outcome measures: Primary outcome was composite of mortality or sNSI defined by cerebral palsy with no independent walking, disabling hearing loss and bilateral blindness. Results: Overall, 3055 infants (ANZNN n=960, CNN/CNFUN n=1019, EPIPAGE-2 n=1076) were included in the study. Primary composite outcome rates were 21.3%, 20.6% and 28.4%; mortality rates were 18.7%, 17.4% and 26.3%; and rates of sNSI among survivors were 4.3%, 5.3% and 3.3% for ANZNN, CNN/CNFUN and EPIPAGE-2, respectively. Adjusted for gestational age and multiple births, EPIPAGE-2 had higher odds of composite outcome compared with ANZNN (OR 1.71, 95% CI 1.38 to 2.13) and CNN/CNFUN (OR 1.72, 95% CI 1.39 to 2.12). EPIPAGE-2 did have a trend of lower odds of sNDI but far short of compensating for the significant increase in mortality odds. These differences may be related to variations in perinatal approach and practices (and not to differences in infants' baseline characteristics). Conclusions: Composite outcome of mortality or sNSI for extremely preterm infants differed across high-income countries with similar baseline characteristics and access to healthcare. Abstract : The composite outcome of mortality and significant neurodisability in extremely low birth weight infants is compared across 3 different international cohorts (Canada, Australia/New Zealand, France). The composite outcome was higher in the French cohort, driven by a higher mortality.