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Clinical Trial Summary

Late preterm infants, who are born at 34, 35 or 36 weeks gestation, often have difficulty feeding, establishing growth, and fighting off infection. Breastfeeding provides improved nutrition to help fight infection, in part because breast milk encourages the growth of healthy bacteria (microbiota) in the infant's intestine. However, when mothers give birth preterm, their breasts are usually not quite ready to make milk; it can take several days to have enough breast milk to match a baby's nutritional needs. If there is not yet enough breast milk, formula is often used. However, formula can interfere with the growth of healthy intestinal bacteria. An alternate nutritional option is donor milk from a certified milk bank, which is available in all neonatal intensive care units (NICUs) in San Francisco. However, no scientific studies have yet studied donor milk for late preterm infants, so currently all San Francisco NICUs (as well as the large majority of NICUs nationwide) reserve donor milk for infants born at <34 weeks. This study's investigators therefore propose the "Milk, Growth and Microbiota (MGM) Study," a randomized controlled trial to compare banked donor milk to formula for breastfeeding late preterm infants born in San Francisco. Once enrolled in MGM, infants will be randomly assigned to receive either formula or banked donor milk if they need additional nutrition until their mothers are making enough milk. After enrolling the babies, investigators will weigh them daily to assess their growth. The investigators will also collect infant bowel movements at baseline, 1 week and 1 month to determine whether donor milk vs. formula impacts the type of bacteria in the baby's intestine. If the study's results show that donor milk optimizes growth while helping establish healthy bacteria in the baby's intestine, donor milk might be postnatal strategy to bolster neonatal nutrition for late preterm infants.


Clinical Trial Description

In the U.S., 8% of all births occur between 34 0/7 and 36 6/7 weeks gestation and are regarded as late preterm birth. Compared to term newborns, late preterm newborns have a much higher risk of morbidity and mortality, in part because of difficulty establishing feeding and growth. Breastfeeding optimizes the nutrition of these infants by supporting growth and establishing a healthy intestinal microbiota. However, maternal breast milk production is often delayed after preterm birth, which can hamper optimal growth. When this occurs, clinicians may use formula to supplement breastfeeding. However, formula alters neonatal intestinal microbiota and can impede some of the benefits of a human milk diet. Donor milk from a certified milk bank could possibly be used instead of formula for supplementation prior to the onset of copious maternal milk production. However, the use of banked donor milk has never been studied in late preterm infants. The aim of this proposal is to report the effects of banked donor milk vs. formula on growth and on intestinal microbiota among late preterm, breastfeeding newborns who require additional nutrition before copious maternal milk is available. This study's investigators therefore propose a randomized, controlled trial enrolling late preterm newborns. Newborns will be randomly assigned either to breastfeed with additional formula feedings, or to breastfeed with additional donor milk feedings. The study's outcomes will be: (1) growth (rate of weight change), and (2) intestinal microbiota. If the study finds that temporary use of donor milk supports growth and maintains healthy intestinal microbiota until copious maternal milk becomes available, temporary use of donor milk might be a postnatal strategy to bolster neonatal nutrition and optimize nutritional support and growth for late preterm infants. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03220282
Study type Interventional
Source University of California, San Francisco
Contact
Status Suspended
Phase N/A
Start date October 30, 2017
Completion date January 31, 2025

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