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Hyperglycemia and morbidity and mortality in extremely low birth weight infants

Abstract

Objective:

The purpose of this study was to determine the association between hyperglycemia and mortality and late-onset infections (>72?h) in extremely low birth weight (ELBW) infants.

Study design:

Retrospective analysis of a prospective cohort study of 201 ELBW infants who survived greater than 3 days after birth. Mean morning glucose levels were categorized as normoglycemia (<120?mg/dl), mild-moderate hyperglycemia (120 to 179?mg/dl) and severe hyperglycemia (180?mg/dl). Hyperglycemia was further divided into early (first 3 days of age) and persistent (first week of age). Logistic regression was performed to assess whether hyperglycemia was associated with either mortality or late-onset culture-proven infection, measured after 3 and 7 days of age.

Results:

Adjusting for age, the odds ratio (OR) for either dying or developing a late infection was 5.07 (95% confidence interval (CI): 1.06 to 24.3) for infants with early severe hyperglycemia and 6.26 (95% CI: 0.73 to 54.0) for infants with persistent severe hyperglycemia. Adjusting for age, both severe early and persistent hyperglycemia were associated with increased mortality. Among survivors, there was no significant association between hyperglycemia and length of mechanical ventilation or length of hospital stay. Persistent severe hyperglycemia was associated with the development of Stage II/III necrotizing enterocolitis, after adjusting for age and male gender (OR: 9.49, 95% CI: 1.52 to 59.3).

Conclusion:

Severe hyperglycemia in the first few days after birth is associated with increased odds of death and sepsis in ELBW infants.

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Acknowledgements

We acknowledge Dr Fernando Moya, Director of Neonatology at New Hanover Regional Medical Center and Professor of Pediatrics at University of North Carolina, for his valuable comments and suggestions on the study.

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Correspondence to L S Kao.

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Kao, L., Morris, B., Lally, K. et al. Hyperglycemia and morbidity and mortality in extremely low birth weight infants. J Perinatol 26, 730–736 (2006). https://doi.org/10.1038/sj.jp.7211593

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