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Blanket temperature during therapeutic hypothermia and outcomes in hypoxic ischemic encephalopathy
Flibotte, J., Laptook, A. R., Shankaran, S., McDonald, S. A., Baserga, M. C., Bell, E. F., Cotten, C. M., Das, A., DeMauro, S. B., DuPont, T. L., Eichenwald, E. C., Heyne, R., Jensen, E. A., Van Meurs, K. P., Dysart, K., Eunice Kennedy Shriver Natl Inst C, & Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network (2022). Blanket temperature during therapeutic hypothermia and outcomes in hypoxic ischemic encephalopathy. Journal of Perinatology, 42(3), 348-353. https://doi.org/10.1038/s41372-021-01302-4
OBJECTIVE: Determine whether blanket temperatures during therapeutic hypothermia (TH) are associated with 18-22 month outcomes for infants with hypoxic ischemic encephalopathy (HIE).
STUDY DESIGN: Retrospective cohort study of 181 infants with HIE who received TH in two randomized trials within the Neonatal Research Network. We defined summative blanket temperature constructs and evaluated for association with a primary composite outcome of death or moderate/ severe disability at 18-22 months.
RESULTS: Each 0.5 °C above 33.5 °C in the mean of the highest quartile blanket temperature was associated with a 52% increase in the adjusted odds of death/ disability (aOR 1.52, 95% CI 1.09-2.11). Having >8 consecutive blanket temperatures above 33.5 °C rendered an aOR of death/disability of 5.04 in the first 24 h (95% CI 1.54-16.6) and 6.92 in the first 48 h (95% CI 2.20-21.8) of TH.
CONCLUSIONS: Higher blanket temperature during TH may be an early, clinically useful biomarker of HIE outcome.
