Neonatal Outcomes in Very Preterm Infants With Severe Congenital Heart Defects: An International Cohort Study. Issue 5 (3rd March 2020)

• Record Type: Journal Article
• Authors: Norman, Mikael; Håkansson, Stellan; Kusuda, Satoshi; Vento, Maximo; Lehtonen, Liisa; Reichman, Brian; Darlow, Brian A.; Adams, Mark; Bassler, Dirk; Isayama, Tetsuya; Rusconi, Franca; Lee, Shoo; Lui, Kei; Yang, Junmin; Shah, Prakesh S.
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Stocker Martin investigator.; Laubscher Bernhard investigator.; Malzacher Andreas investigator.; Micallef John P. investigator.; Hegi Lukas investigator.; Bassler Dirk investigator.; Arlettaz Romaine investigator.; Bernet Vera investigator.; Dani Carlo investigator.; Fiorini Patrizio investigator.; Ghirri Paolo investigator.; Tomasini Barbara investigator.;
• Is Part Of: Journal of the American Heart Association. Volume 9:Issue 5(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-03-03
• Subjects: cardiac malformation -- mortality -- newborn infant -- preterm birth; Heart -- Diseases -- Periodicals; Cardiovascular system -- Diseases -- Periodicals; Cerebrovascular disease -- Periodicals; Cardiology -- Periodicals; 616.1
• DOI: 10.1161/JAHA.119.015369
• Languages: English
• ISSNs: 2047-9980

Abstract

Abstract : Background: Very preterm infants are at high risk of death or severe morbidity. The objective was to determine the significance of severe congenital heart defects (CHDs) for these risks. Methods and Results: This cohort study included infants from 10 countries born from 2007–2015 at 24 to 31 weeks' gestation with birth weights <1500 g. Severe CHDs were defined by International Classification of Diseases, Ninth Revision ( ICD‐9 ) and Tenth ( ICD‐10 ) codes and categorized as those compromising systemic output, causing sustained cyanosis, or resulting in congestive heart failure. The primary outcome was in‐hospital mortality. Secondary outcomes were neonatal brain injury, necrotizing enterocolitis, bronchopulmonary dysplasia, and retinopathy of prematurity. Adjusted and propensity score–matched odds ratios (ORs) were calculated. Analyses were stratified by type of CHD, gestational age, and network. A total of 609 (0.77%) infants had severe CHD and 76 371 without any malformation served as controls. The mean gestational age and birth weight were 27.8 weeks and 1018 g, respectively. The mortality rate was 18.6% in infants with CHD and 8.9% in controls (propensity score–matched OR, 2.30; 95% CI, 1.61–3.27). Severe CHD was not associated with neonatal brain injury, necrotizing enterocolitis, or retinopathy of prematurity, whereas the OR for bronchopulmonary dysplasia increased. Mortality was higher in all types, with the highest propensity score–matched OR (4.96; 95% CI, 2.11–11.7) for CHD causing congestive heart failure. While mortality did not differ between groups at <27 weeks' gestational age, adjusted OR for mortality in infants with CHD increased to 10.9 (95% CI, 5.76–20.70) at 31 weeks' gestational age. Rates of CHD and mortality differed significantly between networks. Conclusions: Severe CHD is associated with significantly increased mortality in very preterm infants.