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A quality-improvement project to standardize feeding practices for micro preemies — preterm infants born months before their due date — helped to boost their weight and nearly quadrupled the frequency of lactation consultations ordered in the neonatal intensive care unit (NICU), a multidisciplinary team from Children’s National Health System finds.
According to the Centers for Disease Control and Prevention, about 1 in 10 infants in 2016 was preterm, born prior to completing 37 gestational weeks of pregnancy. Micro preemies are the tiniest infants in that group, weighing less than 1,500 grams and born well before their brain, lungs and organs like the liver are fully developed.
As staff reviewed charts for very low birth weight preterm infants admitted to Children’s NICU, they found dramatic variation in nutritional practices among clinicians and a mean decline in delta weight Z-scores, a more sensitive way to monitor infants’ weight gain along growth percentiles for their gestational age. A multidisciplinary team that included dietitians, nurses, neonatologists, a lactation consultant and a quality-improvement leader evaluated nutrition practices and determined key drivers for improving nutrition status.
“We tested a variety of strategies, including standardizing feeding practices; maximizing intended delivery of feeds; tracking adequacy of calorie, protein and micronutrient intake; and maximizing use of the mother’s own breast milk,” says Michelande Ridoré, MS, a Children’s NICU quality-improvement lead who will present the group’s findings during the Virginia Neonatal Nutrition Association conference this fall. “We took nothing for granted: We reeducated everyone in the NICU about the importance of the standardized feeding protocol. We shared information about whether infants were attaining growth targets during daily rounds. And we used an infographic to help nursing moms increase the available supply of breastmilk,” Ridoré says.
On top of other challenges, very low birth weight preterm infants are born very lean, with minimal muscle. During the third trimester, pregnant women pass on a host of essential nutrients and proteins to help satisfy the needs of the fetus’ developing muscles, bones and brain. “Because preterm infants miss out on that period in utero, we add fortification to provide preemies with extra protein, phosphorus, calcium and zinc they otherwise would have received from mom in the womb,” says Victoria Catalano, RDN, LD, CNSC, CLC, a pediatric clinical dietitian in Children’s NICU and study co-author. Babies’ linear growth is closely related to neurocognitive development, Catalano says. A dedicated R.N. is assigned to length boards for Children’s highest-risk newborns to ensure consistency in measurements.
Infants who were admitted within the first seven days of life and weighed less than 1,500 grams were included in the study. At the beginning of the quality-improvement project, the infants’ mean delta Z-score for weight was -1.8. By December 2018, that had improved to -1.3. And the number of lactation consultation ordered weekly increased from 1.1 to four.
“We saw marked improvement in micro preemies’ nutritional status as we reduced the degree of variation in nutrition practices,” says Mary Revenis, M.D., NICU medical lead on nutrition and senior author for the research. “Our goal was to increase mean delta Z-scores even more. To that end, we will continue to test other key drivers for improved weight gain, including zinc supplementation, updating infants’ growth trajectories in the electronic medical record and advocating for expanded use of birth mothers’ breast milk,” Dr. Revenis says.
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Materials provided by Children’s National Health System. Note: Content may be edited for style and length.
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