Donor milk in the newborn nursery at the University of Iowa Children's Hospital

Racial Disparities in Donor Human Milk Feedings: A Study Using Electronic Medical Records

INTRODUCTION

The aim of this study was to evaluate differences in the use of pasteurized donor human milk (PDHM) by maternal race-ethnicity during postpartum hospitalization using electronic medical records (EMRs).

MATERIALS AND METHODS

A retrospective cohort study of all live-born infants at our academic research institution from July 1, 2014, to June 30, 2016, was conducted. EMR data were used to determine whether each infant received mother's own milk (MOM), PDHM, or formula. These data were stratified based on whether the infant received treatment in the Neonatal Critical Care Center. Generalized estimating equation models were used to calculate the odds of receiving PDHM by maternal race-ethnicity, adjusting for gestational age, birth weight, insurance, preferred language, nulliparity, and mode of delivery.

RESULTS

Infant feeding data were available for 7097 infants, of whom 49% were fed only MOM during their postpartum hospitalization. Among the 15.9% of infants admitted to neonatal critical care, infants of non-Hispanic Black (odds ratio [OR] 0.47, 95% confidence interval [CI] 0.31-0.72), Hispanic (OR 0.65, 95% CI 0.36-1019), and Other (OR 0.63, 95% CI 0.32-1.26) mothers had lower rates of PDHM feedings than infants of non-Hispanic White mothers in the adjusted models. Among well infants, the use of PDHM was lower among non-Hispanic Black and Hispanic mothers (OR 0.25, 95% CI 0.18-0.36, and OR 0.38, 95% CI 0.26-0.56) compared with non-Hispanic White mothers.

CONCLUSIONS

Inequities in exclusive human milk feeding and use of PDHM by maternal race-ethnicity were identified. Antiracist interventions are needed to promote equitable access to skilled lactation support and counseling for PDHM use.

An Alternative to Mother's Own Milk: Maternal Awareness of Donor Human Milk and Milk Banks

BACKGROUND

The use of donor human milk is rising. Maternal awareness of donor human milk use, milk donation, and milk banks has not been well described in the United States.

RESEARCH AIMS

To explore maternal experience, knowledge, and attitudes regarding donor human milk use and milk donation. We also assessed counseling by medical providers about donor human milk use and donation.

METHODS

A cross-sectional prospective survey design was used in this study. We anonymously surveyed mothers (N = 73) attending the 1 to 2-week well newborn appointment. Analyses were completed using one-way ANOVA and logistic regression.

RESULTS

Participants' infants primarily received their own mother's milk (87%, n = 61). No infants received donor human milk, but 4% (n = 3) of participants donated milk. The majority of participants had positive responses to attitudinal statements about donor milk. When presented with a hypothetical scenario, participants chose formula (89%, n = 59) over donor human milk (11%, n = 7) for their infant. Moreover, if donor human milk was the only option available, they chose donor human milk from a relative or friend (60%, n = 40) over a milk bank (40%, n = 26). Medical providers had discussed donor human milk use or donation with 4% (n = 3) of participants.

CONCLUSIONS

The majority of participants previously had minimal experience using donor human milk and limited knowledge regarding donor human milk and milk banks. According to participants, medical providers did not routinely discuss milk donation and the role of donor human milk with families.

Use of donor human milk in nonhospitalized infants: An infant growth study

When mother's own milk (MOM) is unavailable or insufficient, donor human milk (DHM) is recommended as the next best alternative for low birthweight infants. DHM use for healthy, term infants is increasing, but evidence for growth and tolerability is limited. This retrospective study evaluated growth in term infants in the community who received DHM from a UK milk bank. Mothers of infants receiving DHM between 2017 and 2019 were contacted (n = 49), and 31 (63.2%) agreed to participate. Fourteen infants received DHM as a supplement to other feeds (MOM and/or infant formula) and 17 were exclusively fed DHM where breastfeeding was impossible (range: 3–6 weeks). Growth was assessed by deriving z‐scores using the WHO standard for infant growth and compared with 200 exclusively breastfed infants. Multivariate regression analysis revealed no feeding method‐specific association between z‐score and age, nor between weight and age, suggesting that z‐scores and growth velocity were not affected by feeding exclusive MOM, supplemental DHM or exclusive DHM. DHM was well‐tolerated with no adverse events that led to early cessation. After receiving supplemental DHM group, 63% of infants whose mothers had no physical barrier to breastfeeding (5/8 infants) were exclusively breastfed. This novel study reports adequate growth outcomes of healthy nonhospitalized infants receiving DHM, either as the sole milk source or supplement. Prospective studies are needed to confirm whether DHM is a suitable feeding alternative for term infants in the community, optimal durations, as well as the impact of DHM availability on breastfeeding rates and maternal mental health.

DHM recipients were compared with the who infant growth standard (World Health Organization, 2020) by deriving z‐scores. The WHO Anthro Macro (World Health Organization, 2011 ) was used to calculate weight‐for‐age, length‐for‐age and head circumference‐for‐age z‐scores; z‐scores are the standard deviation of an infant's anthropometric measurements when compared with the WHO standard for infant growth and are gender and age specific.

Donor Human Milk Use in Populations Other than the Preterm Infant: A Systematic Scoping Review

Introduction: Exclusive breastfeeding is recommended for an infant's first 6 months of life. If unable to breastfeed, expressed breast milk, including donor human milk (DHM), is recommended for optimal nutrition. Benefits of DHM in preterm infants have been established by extensive research. However, less is known about DHM use in other populations. Objective: To conduct a scoping review of the literature regarding DHM use in populations other than preterm infants. Materials and Methods: PubMed and Clinicaltrials.gov were used to search for articles and clinical trials published between January 1, 2000 and February 29, 2020. In total, 182 articles and reports were identified and screened by 2 independent reviewers. Results: Twenty-six articles met inclusion criteria and were reviewed. Studies were mostly observational in design and included infants born >35 weeks gestational age with health risks (9/26) and healthy infants (14/26). Most studies in infants with health risks (7/9) investigated clinical outcomes, with small, observational studies suggesting potential improvements in feeding tolerance and gastrointestinal health. Regarding healthy infants, no studies addressed growth, only one study measured clinical outcomes, and findings related to breastfeeding outcomes were conflicting. Over half of the studies reviewed (15/26) were not designed to establish a potential relationship between DHM use and relevant health-related outcomes. Conclusion: The current evidence of DHM use in populations other than preterm infants is limited by lack of direct health measures and infrequent use of randomized trials. More research is warranted to investigate clinical, growth, and breastfeeding outcomes.

National Prevalence of Donor Milk Use Among Level 1 Nurseries

BACKGROUND AND OBJECTIVES

Donor milk use has increased among very preterm infants because of mounting evidence of health benefits; however, the extent that donor milk is used among healthy term infants in level 1 nurseries is unclear. We aimed to determine (1) national prevalence of and (2) hospital factors associated with donor milk use in level 1 nurseries.

METHODS

Among 3040 US birthing hospitals, we randomly selected hospitals from each of 4 US regions (119 in northeast, 120 in Midwest, 116 in west, and 103 in south) for a total of 458 hospitals. We surveyed the nursing leaders of these hospitals from October to December 2017 regarding routine use of donor milk in the level 1 nursery (yes or no). To estimate national prevalence, we weighted responses according to the number of birthing hospitals within each region. We examined relationships between routine donor milk use in the level 1 nursery and hospital characteristics using multivariable logistic regression.

RESULTS

In total, 214 of 458 (47%) nursing leaders responded. The national prevalence of routine donor milk use in level 1 nurseries was 17.6%. Eighty-five percent of donor milk programs were ≤5 years old. Donor milk use occurred more often in hospitals with ≥1500 annual births (41.7%), compared to ≤500 annual births (6.3%) (adjusted odds ratio 7.8; 95% confidence interval 1.8-34.4), and in the west (30.9%), compared to the northeast (10.5%) (adjusted odds ratio 4.1; 95% confidence interval [1.1-14.9]).

CONCLUSIONS

Although there is limited evidence to support donor milk for healthy infants in the nursery, nearly one-fifth of level 1 US nurseries routinely used donor milk in 2017.

Supplementation Practices and Donor Milk Use in US Well-Newborn Nurseries

BACKGROUND AND OBJECTIVES

Guidelines encourage exclusive breastfeeding for healthy newborns but lack specificity regarding criteria for medically indicated supplementation, including type, timing, and best practices. We set out to describe practice patterns and provider perspectives regarding medically indicated supplementation of breastfeeding newborns across the United States.

METHODS

From 2017 to 2018, we surveyed the Better Outcomes through Research for Newborns representative from each Better Outcomes through Research for Newborns hospital regarding practices related to medically indicated supplementation. We used descriptive statistics to compare practices between subgroups defined by breastfeeding prevalence and used qualitative methods and an inductive approach to describe provider opinions.

RESULTS

Of 96 providers representing discrete hospitals eligible for the study, 71 participated (74% response rate). Practices related to criteria for supplementation and pumping and to type and caloric density of supplements varied widely between hospitals, especially for late preterm infants, whereas practices related to lactation consultant availability and hand expression education were more consistent. The most commonly reported criterion for initiating supplementation was weight loss of ≥10% from birth weight, and bottle-feeding was the most commonly reported method; however, practices varied widely. Donor milk use was reported at 20 (44%) hospitals with ≥81% breastfeeding initiation and 1 (4%) hospital with <80% breastfeeding initiation (P = .001).

CONCLUSIONS

Strategies related to supplementation vary among US hospitals. Donor milk availability is concentrated in hospitals with the highest prevalence of breastfeeding. Implementation of evidence-based management of supplementation among US hospitals has the potential to improve the care of term and late preterm newborns.

The impact on the exclusive breastfeeding rate at 6 months of life of introducing supplementary donor milk into the level 1 newborn nursery

OBJECTIVES

This study explored whether donor-milk supplementation increases breastfeeding exclusivity at 6 months of life. In 10/2015, we implemented donor milk for breastfed newborns who needed nutritional supplements for hypoglycemia, hyperbilirubinemia, and >8% weight loss at 40 h of life.

STUDY DESIGN

We conducted a retrospective chart review on 122 qualified neonates admitted to newborn nursery at University of Florida Jacksonville 4 months before donor-milk implementation and 6 months after.

RESULTS

73 (60%) of the neonates received formula and 49 (40%) received donor milk. 39 (54%) in the formula group and 33 (46%) in the donor-milk group were surveyed after 6 months of life. Multivariate logistic regression showed that newborns who received donor milk had five times greater odds of being exclusively breastfed at 6 months of life.

CONCLUSIONS

Donor milk as feeding supplementation for newborns is associated with increased exclusive breastfeeding at 6 months of life.

Disparities in Donor Human Milk Supplementation Among Well Newborns

BACKGROUND

Donor human milk supplementation for healthy newborns has increased. Racial-ethnic disparities in supplementation have been described in the neonatal intensive care unit but not in the well newborn setting.

RESEARCH AIM

The aim of this study was to identify maternal characteristics associated with donor human milk versus formula supplementation in the well newborn unit.

METHODS

This retrospective cohort study includes dyads of well newborns and their mothers (N = 678) who breastfed and supplemented with formula (n = 372) or donor human milk (n = 306) during the birth hospitalization at a single hospital in the midwestern United States. Maternal characteristics and infant feeding type were extracted from medical records. Chi-square and logistic regression were used to examine associations between maternal characteristics and feeding type.

RESULTS

Nonwhite women were less likely to use donor human milk. Compared to non-Hispanic white women, the largest disparity was with Hispanic (adjusted odds ratio [OR] = 0.28, 95% CI [0.12, 0.65]), then non-Hispanic black (adjusted OR = 0.32, 95% CI [0.13, 0.76]) and Asian women (adjusted OR = 0.34, 95% CI [0.16, 0.74]). Lower donor human milk use was associated with primary language other than English and public versus private insurance.

CONCLUSION

The goal of improving public health through breastfeeding promotion may be inhibited without targeting donor human milk programs to these groups. Identifying the drivers of these disparities is necessary to inform person-centered interventions that address the needs of women with diverse backgrounds.

Nurse-Driven Initiative to Increase Exclusive Human Milk Feeding by Using Pasteurized Donor Human Milk to Treat Hypoglycemic Term Neonates

OBJECTIVE

To increase exclusive breastfeeding by offering pasteurized donor human milk (PDHM) to newborns with hypoglycemia.

DESIGN

Quality improvement project.

SETTING/LOCAL PROBLEM

A Baby-Friendly Hospital Initiative-designated urban academic medical center in the northeastern United States serving a diverse population where, by policy, virtually all newborns with hypoglycemia received supplemental infant formula. Approximately 85% of women cared for at this center initiate breastfeeding, but many struggle with exclusive breastfeeding during the hospital stay.

PARTICIPANTS

All staff members in the labor and delivery unit and the mother/baby unit, including registered nurses, unit clerks, patient care technicians, and lactation consultants. Term, breastfed newborns identified as being hypoglycemic per our guidelines were eligible to receive PDHM.

INTERVENTION/MEASUREMENTS

Registered nurses provided education about PDHM to parents of newborns who were hypoglycemic, obtained consent, and initiated the order. We offered PDHM instead of infant formula when mother's own milk was not available in sufficient quantity per our hypoglycemia guidelines. We measured newborns' glucose levels and monitored breastfeeding outcomes, including continued breastfeeding.

RESULTS

During the 4-month trial, 83 newborns were eligible for PDHM. Of those, 76% of parents opted for PDHM rather than formula. Most newborns in both groups were still breastfeeding at discharge, and 53% of those who received PDHM were fed human milk exclusively during their hospital stays.

CONCLUSION

A nurse-driven protocol offering PDHM to otherwise healthy newborns with hypoglycemia is a viable option for increasing exclusive breast milk feeding during the hospital stay.

Effect of Donor Milk Supplementation on Breastfeeding Outcomes in Term Newborns: A Randomized Controlled Trial

BACKGROUND

Pasteurized donor human milk (DHM) use for healthy newborns is increasing; however, no studies have explored its effect on breastfeeding outcomes.

PATIENTS AND METHODS

We enrolled 60 healthy, term breastfeeding newborns with ≥4.5% weight loss in the first 36 hours in a randomized controlled trial. Thirty newborns were randomly assigned to early limited-volume DHM supplementation and 30 newborns to exclusive breastfeeding. Mothers were surveyed at 1 week and 1, 2, and 3 months regarding the mode of infant feeding. Comparing infants randomized to DHM supplementation with those exclusively breastfeeding, there was no significant difference in the proportion using formula at 1 week (21% vs 7%, P = .15), nor in the proportion of any breastfeeding (79% vs 90%, P = .30) or breastfeeding without formula at 3 months (62% vs 77%, P = .27). Conclusion For newborns with ≥4.5% weight loss in the first 36 hours, early limited-volume supplementation with DHM is unlikely to have a significant favorable impact on breastfeeding outcomes.

Prevalence and Trends in Donor Milk Use in the Well-Baby Nursery: A Survey of Northeast United States Birth Hospitals

BACKGROUND AND OBJECTIVES

Pasteurized donor human milk ("donor milk") is an alternative to formula for supplementation of breastfed infants. We conducted a survey to determine (1) prevalence, trends, and hospital-level correlates of donor milk use for healthy newborns in the northeast United States and (2) clinician knowledge and opinions regarding this practice.

METHODS

We conducted parallel surveys of clinicians (88% nurse and/or lactation consultant) at (1) all birth hospitals in Massachusetts (MA) and (2) all birth hospitals served by a northeast United States milk bank. We asked about hospital use of donor milk for newborns ≥35 weeks' gestation and receiving Level I care in well nursery, hospital-related factors we hypothesized would be associated with this practice, and clinician knowledge and opinions about donor milk use.

RESULTS

35/46 (76%) of MA birth hospitals and 51/69 (74%) of hospitals served by the milk bank responded; 71 unique hospitals were included. Twenty-nine percent of MA birth hospitals and 43% of hospitals served by the milk bank reported using donor milk for healthy newborns. Hospitals that used donor milk for healthy newborns had higher exclusive breastfeeding at hospital discharge than hospitals that did not (77% versus 56%, p = 0.02). Eighty-three percent of respondents agreed or strongly agreed that using donor milk is an effective way to increase the hospital's exclusive breastfeeding rate.

CONCLUSIONS

Many northeast United States birth hospitals currently use donor milk for healthy newborns. This practice is associated with higher exclusive breastfeeding at hospital discharge. Relationships with breastfeeding after discharge and related outcomes are unknown.

Donor Milk or Formula: A Qualitative Study of Postpartum Mothers of Healthy Newborns

BACKGROUND

Many breastfed infants receive supplemental feeds during the birth hospitalization, either by maternal request or due to medical indications. Donor milk from a certified milk bank has become increasingly available and is now used in some settings for term and late preterm infants. No studies have explored maternal opinions about donor milk and formula as options for supplementary feedings. Research aim: This study aimed to explore maternal perceptions about donor milk and formula supplementation and implications for continued breastfeeding.

METHODS

The authors conducted semistructured interviews with 30 postpartum mothers of healthy newborns who breastfed and gave supplementary feedings with pasteurized donor milk and/or formula during the birth hospitalization. They analyzed transcripts using the constant comparative method and identified four major themes.

RESULTS

Identified themes included the following: (a) Donor milk is seen as temporary whereas formula is seen as an ongoing plan, (b) formula is viewed as familiar whereas donor milk is viewed as unfamiliar, (c) donor milk is costly and challenging logistically, and (d) donor milk is "healthier."

CONCLUSION

For mothers who view donor milk as temporary and formula as permanent, the provision of donor milk rather than formula when supplementation is medically indicated may have the potential to promote the return to exclusive maternal breastfeeding. Barriers to the use of donor milk include cost and lack of familiarity and access.

Donor Milk Utilization for Healthy Infants: Experience at a Single Academic Center

BACKGROUND

Banked donor milk (BDM) has historically been used as an alternative to formula for preterm infants. Recently, BDM has been endorsed by two national organizations for use in healthy infants. We sought to quantify utilization trends and characteristics of mothers and their healthy newborns who received BDM during their postpartum stay between 2013 and 2016 at a single academic medical center.

MATERIALS AND METHODS

In this observational study, we used a clinical log to identify all infants who received BDM in the well-baby nursery between July 2013 and June 2016. From this log, we abstracted data on the numbers of babies who received BDM, the quantity of BDM provided, and indications for usage. We also collected clinical data from the medical records of a subset of corresponding mothers and infants.

RESULTS

BDM utilization increased over time in healthy infants, with 0.04% of infants before July 2014 receiving BDM compared with 4.7% in July 2015 to June 2016. During the same periods, the number of bottles provided per infant also increased, from 0.6 bottles per infant to 4.6 bottles per infant. The most common indications for providing BDM were parent/caregiver request (19%) and excessive weight loss/dehydration (17%).

CONCLUSION

At our center, the use of BDM for healthy infants increased substantially over the study period. More research is urgently needed to understand the repercussions of this practice on resource utilization as well as short- and long-term breastfeeding and health outcomes.

A comparison of breastfeeding rates by obesity class

PURPOSE

The purpose of this study is to compare breastfeeding initiation rates for women across body mass index (BMI) classes, including normal BMI (18.50-24.99 kg/m²), overweight (25.00-29.99 kg/m²), obese (30.00-39.99 kg/m²), morbidly obese (40.00-49.99 kg/m²) and extreme obesity (≥50.00 kg/m²).

MATERIALS AND METHODS

Retrospective cohort of women with singleton pregnancies, delivering in St. John's, NL between 2002 and 2011. The primary outcome was any breastfeeding on hospital discharge. Breastfeeding rates across BMI categories were compared, using univariate analyses. Multivariate analysis included additional maternal and obstetric variables.

RESULTS

Twelve thousand four hundred twenty-two women were included: 8430 breastfed and 3992 did not breastfeed on hospital discharge. Progressively decreasing rates of breastfeeding were noted with increasing obesity class: normal BMI (71.1%), overweight (69.1%), obese (61.6%), morbidly obese (54.2%), and extremely obese women (42.3%). Multivariate analysis confirmed that increasing obesity class resulted in lower odds of breastfeeding: overweight (adjusted odds ratios (aOR) 0.86, 95%CI 0.76-0.98), obese (aOR 0.65, 95%CI 0.57-0.74), morbidly obese (aOR 0.57, 95%CI 0.44-0.74), and extreme obesity (aOR 0.37, 95%CI 0.19-0.74).

CONCLUSION

Women in higher obesity classes are progressively less likely to initiate breastfeeding. Women with the highest prepregnancy BMIs should be particularly counseled on the benefits of breastfeeding.

Association Between In-Hospital Pacifier Use and Breastfeeding Continuation and Exclusivity: Neonatal Intensive Care Unit Admission as a Possible Effect Modifier

BACKGROUND

Breastfeeding dyads frequently use pacifiers during the birth hospitalization, but the relationships between this exposure and breastfeeding continuation and exclusivity remain unclear.

MATERIALS AND METHODS

In this secondary analysis of cross-sectional survey data from the CDC Pregnancy Risk Assessment Monitoring System (PRAMS) from 10 U.S. states (AK, AR, CO, ME, MN, NJ, NY, OR, TX, and VT) from 2009 to 2011, we assessed to what extent pacifier use during the birth hospitalization is independently associated with any and exclusive breastfeeding ≥10 weeks.

RESULTS

A total of 37,628 mothers who were chosen by random birth certificate sampling completed surveys at ∼4 months postpartum. Adjusting for multiple pro-breastfeeding hospital practices and maternal and infant demographic characteristics, pacifier exposure during the birth hospitalization was independently associated with decreased odds of breastfeeding ≥10 weeks (adjusted odds ratio [aOR]) 0.71, 95% confidence interval [CI] 0.63-0.80, p < 0.0001) and exclusive breastfeeding ≥10 weeks (aOR 0.70, 95% CI 0.63-0.79, p < 0.0001) among infants admitted to the well-baby nursery, but not among those admitted to the neonatal intensive care unit (NICU).

CONCLUSIONS

In this population study of mothers from 10 U.S. states, pacifier use during the birth hospitalization was associated with decreased odds of breastfeeding and exclusive breastfeeding ≥10 weeks among well-newborn, but not NICU-admitted infants. Pacifier use may be a marker rather than a cause of breastfeeding difficulties, but prospective, randomized studies are needed to help clarify this. Future studies exploring pacifier exposure and breastfeeding outcomes should account for NICU admission as an effect modifier.

Breastfeeding Continuation Among Late Preterm Infants: Barriers, Facilitators, and Any Association With NICU Admission?

BACKGROUND AND OBJECTIVES

Late preterm birth (at 34-36 6/7 weeks' gestation) is a risk factor for early breastfeeding cessation. The objective of this study was to determine barriers to and facilitators of breastfeeding continuation among late preterm infants (LPI) and to compare the barriers faced by LPI admitted to the well nursery versus the NICU.

METHODS

The SAS Complex Survey was used to perform multivariable logistic regression analysis by using data from the Centers for Disease Control and Prevention's Pregnancy Risk Assessment Monitoring System. Data from 3 states (Illinois, Maine, and Vermont) for the years 2004 to 2008 were used.

RESULTS

A total of 2530 mothers of LPI were surveyed. Odds of breastfeeding initiation were similar among LPI admitted to the NICU versus the well nursery (adjusted odds ratio, 1.24 [95% confidence interval, 0.88-1.73]; P = .209). Odds of breastfeeding for ≥ 10 weeks were no different between LPI admitted to the NICU versus those admitted to the well-nursery (adjusted odds ratio, 1.02 [95% confidence interval, 0.73-1.43]; P = .904). Factors associated with increased odds of breastfeeding for ≥ 10 weeks among LPI were higher maternal education, mother being married, and normal maternal BMI. Regardless of NICU admission, the top reasons cited by mothers of LPI for early breastfeeding discontinuation were perceived inadequate milk supply and nursing difficulties.

CONCLUSIONS

Among LPIs, NICU admission was not associated with early breastfeeding cessation. Mothers of LPIs with lower odds of sustaining breastfeeding for at least 10 weeks were single mothers, those with a high school education only, and those who were obese. Breastfeeding support should be enhanced for LPIs and should address perceived maternal milk supply concerns and nursing difficulties.