Cardiovascular

Enteral Feeding During Therapeutic Hypothermia for Hypoxic-Ischemic Encephalopathy in Neonates: A Multicentre Study from Italy and Belgium.

TL;DR

Enteral feeding during therapeutic hypothermia for hypoxic-ischemic encephalopathy was feasible and gastrointestinal complications were uncommon, with infants fed during cooling achieving full enteral feeding earlier and having shorter hospital stays than those not fed during cooling.

Key Findings

Enteral feeding during therapeutic hypothermia was administered to the majority of included infants.

  • Of 302 infants in the original cohort, 276 were included in the analysis (survivors with complete nutritional data).
  • Enteral feeding during TH was administered to 166 infants (60.1%).
  • The study covered two tertiary neonatal intensive care units in Italy and Belgium between 2011 and 2024.
  • Restriction to survivors was noted as a potential source of survivor bias.

Infants who received enteral nutrition during therapeutic hypothermia achieved full enteral feeding significantly earlier than those not fed during cooling.

  • Median time to full enteral feeding was 8.0 days for infants fed during TH versus 12.0 days for those not fed during cooling (p < 0.001).
  • Overall median time to full enteral feeding was 9 days (IQR 7–12).
  • Enteral feeding volumes remained low during the first three days of life but progressively increased thereafter.

Infants who received enteral nutrition during therapeutic hypothermia had a shorter length of hospital stay.

  • Median length of hospital stay was 11.0 days for infants fed during TH versus 15.0 days for those not fed during cooling (p < 0.001).

Breastfeeding at discharge was more frequent among infants who received enteral nutrition during therapeutic hypothermia.

  • Breastfeeding at discharge occurred in 79.5% of infants fed during TH versus 54.5% of those not fed during TH (p < 0.001).

Despite inter-centre differences in feeding strategies, time to full enteral feeding was comparable between the Italian and Belgian centres.

  • Italy: median 9 days (IQR 7–12); Belgium: median 10 days (IQR 7–14); p = 0.323.
  • Inter-centre differences existed in feeding initiation and advancement strategies.

Feeding intolerance and temporary feeding withdrawal occurred in a minority of infants.

  • Feeding intolerance occurred in 47 infants (17.0%).
  • Temporary feeding withdrawal occurred in 31 infants (11.2%).

Necrotizing enterocolitis (NEC) was rare and limited to mild disease, with no progression to advanced stages or surgery.

  • Only three infants (1.1%) developed Bell stage IIA NEC.
  • No cases progressed to more advanced disease or required surgery.
  • NEC was more frequent among infants with Sarnat stage III HIE than among those with stage I–II disease (8.3% vs. 0.4%, p = 0.022).
  • The authors note the concentration of NEC in severe HIE is 'hypothesis-generating' but based on only three cases.

What This Means

This research suggests that feeding newborns through a tube into their stomach or intestine (enteral feeding) while they are undergoing whole-body cooling treatment (therapeutic hypothermia) for oxygen deprivation at birth (hypoxic-ischemic encephalopathy, or HIE) is feasible and relatively safe. The study examined 276 surviving babies treated at hospitals in Italy and Belgium over more than a decade, and found that 60% received some enteral feeding during the cooling period. Babies who were fed during cooling reached full feeding levels about four days sooner, left the hospital four days earlier on average, and were more likely to be breastfed at discharge compared to babies who were not fed during cooling. Serious gut complications were uncommon. Only three babies (about 1%) developed necrotizing enterocolitis (NEC), a dangerous intestinal condition that is a major concern in fragile newborns, and none of these cases progressed to severe disease requiring surgery. Feeding intolerance—such as vomiting or delayed stomach emptying—occurred in about 17% of babies, and feeding had to be temporarily stopped in about 11%, but these were generally manageable issues. Notably, all three NEC cases occurred in babies with the most severe form of HIE (Sarnat stage III), raising the possibility that feeding risk may be concentrated in the sickest infants. This research suggests that cautious enteral feeding during therapeutic hypothermia is practical and may offer benefits, but the study's observational design means it cannot prove that feeding during cooling directly caused the better outcomes—sicker babies may have been less likely to be fed in the first place. The authors emphasize that the finding about NEC and disease severity is preliminary given the very small number of cases, and that prospective clinical trials are needed to determine the best timing and pace of feeding, particularly for the most severely affected newborns.

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Citation

De Rose D, Bersani I, Salvatori G, Campi F, Martini L, Maddaloni C, et al.. (2026). Enteral Feeding During Therapeutic Hypothermia for Hypoxic-Ischemic Encephalopathy in Neonates: A Multicentre Study from Italy and Belgium.. Nutrients. https://doi.org/10.3390/nu18193240