Abstract
Objectives:
The objective of this study was to define the association between the burden of severe hypoxemia (SpO2 ≤70%) in the first week of life and development of severe ICH (grade III/IV) in preterm infants.
Study design:
Infants born at <32 weeks or weighing <1500 g underwent prospective SpO2 recording from birth through 7 days. Severe hypoxemia burden was calculated as the percentage of the error-corrected recording where SpO2 ≤70%. Binary logistic regression was used to model the relationship between hypoxemia burden and severe ICH.
Results:
A total of 163.3 million valid SpO2 data points were collected from 645 infants with mean EGA = 27.7 ± 2.6 weeks, BW = 1005 ± 291 g; 38/645 (6%) developed severe ICH. There was a greater mean hypoxemia burden for infants with severe ICH (3%) compared to those without (0.1%) and remained significant when controlling for multiple confounding factors.
Conclusion:
The severe hypoxemia burden in the first week of life is strongly associated with severe ICH.
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Acknowledgements
The authors wish to acknowledge the contributions of Ryan Colvin, Amy Distler, Gina Myers (WU), and Marilyn Weindler (CUMC) for their assistance in identifying patient records and data collection.
Funding
This work was supported by the following grants: Washington University Institute of Clinical and Translational Sciences KL2 Training Program (NIH/NCATS KL2 TR000450); The Barnes-Jewish Hospital Foundation and the Washington University Institute of Clinical and Translational Sciences Clinical and Translational Funding Program (NIH/NCATS UL1 TR000448); Washington University in St. Louis Center for Biomedical Informatics, Clinical Investigation Data Exploration Repository (NIH/NCATS UL1 TR000448); and the National Institutes of Health, grant numbers HD072071 and HL133708.
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Vesoulis, Z.A., Bank, R.L., Lake, D. et al. Early hypoxemia burden is strongly associated with severe intracranial hemorrhage in preterm infants. J Perinatol 39, 48–53 (2019). https://doi.org/10.1038/s41372-018-0236-2
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DOI: https://doi.org/10.1038/s41372-018-0236-2
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