Factors associated with infant feeding of human milk at discharge from neonatal intensive care: Cross-sectional analysis of nurse survey and infant outcomes data |
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| Institution: | 1. Mary M. Ramos, Assistant Professor, Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.;2. Rachel A. Sebastian, Medical Sociologist, Child Policy Research Consulting, LLC, Fort Wright, KY.;3. Emilie Sebesta, Professor, Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.;4. Adrienne E. McConnell, Health Education Consultant, Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.;5. Courtney R. McKinney, Program Manager, Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM. |
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| Abstract: | ContextNurses are principal caregivers in the neonatal intensive care unit and support mothers to establish and sustain a supply of human milk for their infants. Whether an infant receives essential nutrition and immunological protection provided in human milk at discharge is an issue of health care quality in this setting.ObjectivesTo examine the association of the neonatal intensive care unit work environment, staffing levels, level of nurse education, lactation consultant availability, and nurse-reported breastfeeding support with very low birth weight infant receipt of human milk at discharge.Design and settingCross sectional analysis combining nurse survey data with infant discharge data.ParticipantsA national sample of neonatal intensive care units (N = 97), nurses (N = 5614) and very low birth weight infants (N = 6997).MethodsSequential multivariate linear regression models were estimated at the unit level between the dependent variable (rate of very low birth weight infants discharged on “any human milk”) and the independent variables (nurse work environment, nurse staffing, nursing staff education and experience, lactation consultant availability, and nurse-reported breastfeeding support).ResultsThe majority of very low birth weight infants (52%) were discharged on formula only. Fewer infants (42%) received human milk mixed with fortifier or formula. Only 6% of infants were discharged on exclusive human milk. A 1 SD increase (0.25) in the Practice Environment Scale of the Nursing Work Index composite score was associated with a four percentage point increase in the fraction of infants discharged on human milk (p < 0.05). A 1 SD increase (0.15) in the fraction of nurses with a bachelor's degree in nursing was associated with a three percentage point increase in the fraction infants discharged on human milk (p < 0.05). The acuity-adjusted staffing ratio was marginally associated with the rate of human milk at discharge (p = .056). A 1 SD increase (7%) in the fraction of infants who received breastfeeding support was associated with an eight percentage point increase in the fraction of infants discharged on human milk (p < 0.001).ConclusionsNeonatal intensive care units with better work environments, better educated nurses, and more infants who receive breastfeeding support by nurses have higher rates of very low birth weight infants discharged home on human milk. Investments by nurse administrators to improve work environments and support educational preparation of nursing staff may ensure that the most vulnerable infants have the best nutrition at the point of discharge. |
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| Keywords: | Intensive care Neonatal Very low birth weight Infant Human milk Breast feeding Nurse work environment Nurse staffing Practice Environment Scale of the Nursing Work Index |
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