[Prevalence and determinants of breastfeeding: the Zorrotzaurre study]. / Prevalencia y determinantes de la lactancia materna: estudio Zorrotzaurre.

INTRODUCTION: Introduction and objectives: breastfeeding (BF) is a feeding method that provides multiple benefits for the health of infants and their mothers. This study aimed to determine the prevalence of BF during the first year of life of children of women who gave birth in a private clinic in Biscay, Basque Country, Spain, and to identify the facilitating determinants and reasons for abandonment. Method: an observational, descriptive, longitudinal and prospective study in a random sample of 453 newborns (NBs) recruited between 2016 and 2017. Results: in all, 366 women agreed to participate in all the study phases. The prevalence of exclusive breastfeeding (EBF) was 51.7 % at baseline, 77.1 % at discharge, and 21.6 % after sixth months; and that of BF, 87.1 % at the beginning, 48.4 % at month six, and 20.6 % at one year. The facilitating factors of EBF were: at the beginning, not using a nest or breast pump; 15 days of satisfaction with LM and not using a pacifier or breast pump; 4 months of satisfaction with LM; 6 months attending Lactation Support Groups (GAL) and not introducing complementary feeding (CA); and those of LM at 1 year, attending GAL. The main reasons for abandonment were: own initiative, incorporation to work, and little weight gain by the NB. Conclusions: one in 5 newborns received EBF up to 6 months and BF up to one year. It would be necessary to promote strategies that favor breastfeeding, such as eliminating the nest, advising against breast pumps and pacifiers at the beginning, starting CA from the sixth month, and organizing GALs during the first year.

INTRODUCCIÓN: Introducción y objetivos: la lactancia materna (LM) es un método de alimentación infantil que aporta múltiples beneficios para la salud de los lactantes y las madres. Este estudio pretende determinar la prevalencia de la LM durante el primer año de vida de los hijos/as de una serie de mujeres que dan a luz en una clínica privada de Bizkaia, e identificar los determinantes facilitadores y los motivos de abandono. Método: estudio observacional, descriptivo, longitudinal y prospectivo de una muestra aleatoria de 453 recién nacidos (RN), reclutada entre 2016 y 2017. Resultados: en total, 366 mujeres aceptaron participar en todas las fases de estudio. La prevalencia de la lactancia materna exclusiva (LME) fue del 51,7 % al inicio, del 77,1 % al alta y del 21,6 % al sexto mes; y la de la LM, del 87,1 % al inicio, del 48,4 % al sexto mes y del 20,6 % al año. Los factores facilitadores de la LME fueron: al inicio, no utilizar nido ni sacaleches; 15 días de satisfacción con la LM y no utilizar chupete ni sacaleches; 4 meses de satisfacción con la LM; 6 meses de acudir a Grupos de Apoyo a la Lactancia (GAL) y no introducir alimentación complementaria (AC); los de la LM al año, acudir a GAL. Los principales motivos de abandono fueron: la iniciativa propia, la incorporación al trabajo y la escasa ganancia de peso del RN. Conclusiones: uno de cada 5 RN recibieron LME hasta los 6 meses y LM hasta el año. Sería necesario promover estrategias que favorezcan el amamantamiento, como: suprimir el nido, desaconsejar el sacaleches y el chupete al inicio, iniciar la AC a partir del sexto mes y organizar GAL durante el primer año.

Expressed breast milk feeding practices in Hong Kong Chinese women: A descriptive study.

INTRODUCTION: There is an increasing prevalence of breast milk expression and expressed breast milk feeding in healthy full-term infants. The purpose of this study was to provide up-to-date evidence on the practice of expressed breast milk feeding and to identify factors associated with expressed breast milk feeding in Hong Kong Chinese mothers of healthy full-term infants. METHOD: We used a prospective cohort study design to recruit 821 mothers who gave birth to healthy full-term infants in two public hospitals in Hong Kong. Participants completed self-administered baseline questionnaires during their postpartum stay and were followed-up by a series of telephone calls over a 6 months period or until they stopped breastfeeding, whichever came first. The proportion, mode, and type of infant feeding (direct breastfeeding, expressed breast milk feeding and infant formula feeding) were assessed at each telephone follow-up. RESULTS: In our sample, 14.6%, 20.2% and 15% of the participants fed expressed breast milk only to their infants at 1.5, 3 and 6 months respectively. Less than one-half were giving only direct breastfeeding only at 1.5 and 3 months. Within the first six months postpartum, 84.6% of the participants had given expressed breast milk. More than 80% of participants obtained a breast pump before giving birth, with the majority obtaining electric pumps. The most common reason for expressing breast milk within the first 1.5 months postpartum was experiencing breastfeeding difficulties (35%). Returning to employment was the strongest predictor of expressed breast milk feeding at three months postpartum (adjusted odds ratio [aOR]=8.71, 95% Confidence interval [CI]= 5.12-14.8). CONCLUSION: A high proportion of Hong Kong Chinese mothers of healthy, full-term infants pump and feed expressed breast milk at some point during the first 6 months postpartum. Participants purchase or obtain breast pumps before giving birth, often in anticipation of breastfeeding difficulties and returning to work.

The trends in the usage of breast milk in neonatal intensive care setting.

BACKGROUND: Many interventions have been designed to increase breast milk (BM) consumption among preterm and critical-term infants in neonatal units. The aim of this study was to determine the trends in the usage of BM in a neonatal unit and the risk factors for insufficient breast-milk feeding at discharge. METHODS: This retrospective study included newborn infants who hospitalized in the neonatal unit during two periods in different years, a 15-month period in 2012-2013 and in 2017-2018. The primary outcomes were the availability of BM within 24 h after delivery and the status of infant feeding at discharge. RESULTS: During two periods of the study, a total of 3,018 infants were included in the study. The rate of BM expression within the first 24 h after delivery was 92.9%, and it was found that the first period of the study, caesarean section delivery, very low birth weight, being first-time mother, and young maternal age were each independently associated with the delayed initiation of BM expression (P < 0.05). At discharge, 87.6% of the infants had been feeding with BM. Multiple births, the delayed initiation of BM expression, and the length of hospital stay were associated with inadequate BM feeding at discharge (P < 0.001). CONCLUSION: This study showed that interventions supporting BM feeding, which have recently been carried out, made improvements to the initiation of BM expression among mothers whose babies were admitted to the neonatal unit, and in the rate of BM feeding among infants at discharge.

Promotion of early breast milk expression among mothers of preterm infants in the neonatal ICU in an obstetrics and gynaecology hospital: a best practice implementation project.

INTRODUCTION: The supply of breast milk to preterm infants is low. It is important to adopt strategies to promote early, frequent and effective expression of breast milk. OBJECTIVES: The aim of this best practice implementation project was to promote early breast milk expression among mothers of preterm infants in the neonatal ICU in an obstetrics and gynaecology hospital. METHODS: The JBI Practical Application of Clinical Evidence System and Getting Research into Practice audit and feedback tool were used in this project. Questionnaire surveys and interviews were used for baseline and follow-up audits. RESULTS: An overall improvement was observed after the implementation of various strategies. The compliance regarding education provided to healthcare professionals, and mothers after delivery, as well as mothers' access to breast pump increased to 100%. The compliance concerning mothers' education before delivery rose from 0 to 77%. A remarkable increase from 23 to 87% was observed for compliance related to expression of breast milk within 6 h following delivery. The compliance of expression for 8-12 times daily in the first 48 h after delivery also experienced dramatic improvement from 0 to 50%. CONCLUSION: The current project has demonstrated that the implementation of evidence-based practice was effective in promotion of early breast milk expression among mothers of preterm infants in the neonatal ICU. The role of a nurse specialist in breastfeeding, involvement of multidisciplinary staff and utilization of online networking software were highlighted in this project. Future audits may be undertaken to evaluate the long-term effect of the implementation.

Improved Estimation of Breastfeeding Rates Using a Novel Breastfeeding and Milk Expression Survey.

Background: Increasing the proportion of infants who are breastfed and extending breastfeeding duration are high-priority U.S. goals. Evaluation of progress is based on federal survey data, but federal survey questions do not reflect contemporary feeding practices. Materials and Methods: Our objective was to evaluate the Brief Breastfeeding and Milk Expression Recall Survey (BaByMERS) in estimating breast milk feeding and milk expression practices and compare to estimates from simultaneously administered federal survey questions. We surveyed women with child(ren) younger than the age of 6 years attending a large children's hospital for urgent or primary care. We estimated the proportions who participated in various breast milk feeding and milk expression practices and the durations of each and examined agreement between the surveys. We compared respondents with high versus low disagreement using log-binomial regression. Results: Of 225 respondents, 51% had less than a Bachelor's degree, and 44% identified as a race other than white. Similar proportions on each survey reported ever having breastfed or fed breast milk (84%). Proportions still breastfeeding or feeding breast milk at 6 and 12 months differed slightly by survey. Dyads (9%) who fed at the breast and fed expressed milk for nonidentical periods had estimates for the duration of breastfeeding or feeding breast milk that were lower per the federal survey. Respondents who answered the federal survey before the BaByMERS were more likely to provide discrepant responses (risk ratio = 3.40, 95% confidence interval: 1.18-9.80). Conclusions: This study offers further validation of brief interviewer-administered questions to collect quality data recalled about infant feeding and lactation for research purposes.

Clinician's Guide to Supporting Women With Breast Milk Pumping.

The benefits of breastfeeding and breast milk are well established. Women may intend to exclusively breastfeed their infants, but they often need to provide expressed breast milk upon returning to employment or other activities. Without specialized lactation services, women may turn to health care providers, social media, and Web-based information for support and education. Nurses can support breastfeeding women and help them make informed decisions by providing factual, practical information about breast pumps, expression and storage of breast milk, options for testing breast milk, and available resources.

Timing of First Milk Expression to Maximize Breastfeeding Continuation Among Mothers of Very Low-Birth-Weight Infants.

OBJECTIVE: To estimate the time of first milk expression among mothers of very low-birth-weight (VLBW, 1,500 g or less) infants that predicts the maximal duration of mother's milk provision during hospitalization in the neonatal intensive care unit (NICU). METHODS: We performed a secondary analysis and studied 1,157 mother-VLBW infant pairs in nine Massachusetts hospitals born from January 2015 until December 2017. We determined the cut-point for timing of first milk expression after delivery that was associated with the highest probability of any and exclusive provision of mother's milk for the infant at NICU discharge or transfer using recursive partitioning. We estimated hazard ratios (HRs) comparing the probability of continued provision of mother's milk during the hospitalization between mothers who initiated milk expression before compared with after the cut-point (within 8 hours after delivery [referent] vs 9-24 hours), adjusting for gestational age, birth weight, maternal race and ethnicity, and clustering by hospital and plurality in Cox proportional hazards models. RESULTS: Sixty-eight percent of mothers first expressed milk within 8 hours after delivery. First milk expression at 9-24 hours was associated with lower odds of any mother's milk provided to the infant on day 7 (adjusted odds ratio [aOR] 0.39 [0.24-0.60]) and discharge or transfer (aOR 0.45 [0.33-0.62]), compared with expression within 8 hours. Findings were similar for exclusive mother's milk. Mothers who first expressed 9-24 hours stopped providing milk earlier in the neonatal hospitalization (adjusted HR 1.64 [1.33-2.01]) compared with mothers who first expressed within 8 hours. CONCLUSION: Using a data-driven approach, we identified that first milk expression within 8 hours was superior to 9-24 hours with respect to maximal duration of provision of mother's milk for hospitalized VLBW infants. Randomized control trials are needed to further establish the causal relationship between timing of first milk expression and long-term lactation success among mothers of VLBW infants.

Priorities for Contraception and Lactation Among Breast Pump-Dependent Mothers of Premature Infants in the Neonatal Intensive Care Unit.

Objective: Determine the knowledge and priorities for postpartum contraception and lactation in mothers of premature infants. Design: Twenty-five mothers of premature infants (mean gestational age = 29.9 weeks) hospitalized in a tertiary neonatal intensive care unit (NICU) participated in a multi-methods study using a multiple-choice contraceptive survey and qualitative interview in the first 2 weeks postpartum. Data were analyzed using content analysis and descriptive statistics. Results: Although 60% of mothers planned to use contraception, all questioned the timing of postpartum contraceptive counseling while recovering from a traumatic birth and coping with the critical health status of the infant. All mothers prioritized providing mothers' own milk (MOM) over the use of early hormonal contraception because they did not want to "take any risks" with their milk. They had limited knowledge of risks for repeat preterm birth (e.g., prior preterm birth: n = 13, 52%; multiple birth: n = 9, 36%; no knowledge: n = 3, 12%); only two mothers (0.08%) were counseled about the risks of a short interpregnancy interval. Conclusion: The context of the infants' NICU admission and the mother's desire to "do what is best for the baby" by prioritizing MOM should be integrated into postpartum contraceptive counseling for this population.

Comparing Alternative Breast Milk Feeding Questions to U.S. Breastfeeding Surveillance Questions.

Background: Most mothers in the United States express their milk, which is then bottle fed to their infants. The National Immunization Survey (NIS), used to report national breastfeeding prevalence, asks about infant breast milk consumption, regardless of whether it is consumed at the mother's breast or from a bottle. The NIS data are often erroneously interpreted, however, to mean prevalence of at-the-breast feeding. We hypothesized that over half of infants classified as breastfed at 3, 6, and 12 months by the NIS questions would also be consuming expressed breast milk. Materials and Methods: A convenience sample of 456 mothers of infants 19-35 months of age recruited through ResearchMatch.org completed an online infant-feeding questionnaire. The questionnaire included both the NIS questions and more-detailed questions about feeding mode, distinguishing between at-the-breast and bottle. Results: Based on responses of our sample to the NIS questions, it could be interpreted that 74%, 64%, and 39% of mother-infant dyads were at-the-breast feeding at 3, 6, and 12 months, respectively. However, at each time point, most infants consumed at least some breast milk from a bottle. As infants got older, the proportion of breast milk consumed from a bottle increased. Conclusions: In this U.S. sample, the predominant breast milk feeding style involves both at-the-breast and expressed breast milk feeding. Future research and national surveillance should consider including separate measures of maternal breast milk expression and infant consumption of expressed breast milk to enable meaningful exploration of maternal and infant outcomes associated with these asynchronous behaviors.

Female employees' perception of breastfeeding-friendly support in a public university in Spain.

OBJECTIVE: To explore women's experience with continuing breastfeeding when they returned to work. DESIGN AND SAMPLE: A cross-sectional study was conducted. Participants were female employees at the University of Seville who gave birth in the last 10 years while working at University. MEASURES: A questionnaire in Spanish was used to collect information on sociodemographic variables, employment characteristics, continued breastfeeding behavior after returning to work and the dimensions of the validated scale the Workplace Breastfeeding Support Scale (WBSS). RESULTS: A total of 197 women responded, consisting of 53.8% faculty and 46.2% administrative staff. Almost all the women had breastfed their children (92.9%). The proportion of women who continued to breastfeed after they returned to work was 51.3%. The main reason given for interrupting lactation was the challenge of reconciling family and work (53.1%). Faculty members took more breaks for breastfeeding (p = 0.002) and were able to arrange their breaks more easily (p < 0.001). Since it was easier for them to find a quiet place to pump breast milk (p = 0.025), they were more likely to continue breastfeeding after returning to work than were administrative staff (59.8% vs. 41.1%, p < 0.009). CONCLUSION: A designated lactation space and amenities should be provided in order to extend the duration of breastfeeding.

Infant Feeding Practices and Weight Gain in Toddlers Born Very Preterm: A Pilot Study.

PURPOSE: Long-term consequences of prematurity are a public health concern. A pattern of slow initial weight gain followed by a period of rapid weight gain has been associated with poor cardiometabolic health outcomes. The purpose of this study was to examine the relationships between infant feeding practices and weight gain in a sample of 18-to-24-month olds corrected age born very preterm. DESIGN AND METHODS: A cross-sectional design was used to examine the relationships between infant feeding practices and weight gain. Estimates of effect sizes and model fit estimates were the primary parameters of interest. RESULTS: Most of the participants received human milk after birth, but most had transitioned to formula before three months. Slightly less than half received complementary foods prior to four months corrected age. Gains in weight and head circumference were rapid after discharge from the neonatal intensive care unit, while gains in length lagged behind. Infant feeding practices did not have a clinically meaningful effect on weight gain. CONCLUSIONS: While the initiation of human milk feedings was encouraging, the duration fell short of recommendations. Practices such as the early introduction of complementary feedings and the addition of rice cereal to the bottle are troubling. Additionally, the rapid increase in weight gain may have a negative impact on future cardiometabolic health. PRACTICE IMPLICATIONS: Clinical recommendations include ensuring support for the use of human milk before and after hospital discharge, close monitoring of physical growth, and ensuring adherence to the guidelines for the introduction of complementary foods.

"I Felt Like I Was a Part of Trying to Keep My Baby Alive": Perspectives of Hispanic and Non-Hispanic Black Mothers in Providing Milk for Their Very Preterm Infants.

Background: Compared with non-Hispanic white, Hispanic and non-Hispanic black mothers of very preterm infants are less likely to provide mother's milk at the point of hospital discharge; the perspectives of these mothers are poorly understood. Objectives: To examine the perceived barriers and facilitators of providing milk for very preterm infants during the hospitalization among Hispanic and non-Hispanic black mothers. Materials and Methods: We conducted 23 in-depth, semistructured interviews of English and Spanish-speaking Hispanic and non-Hispanic black mothers that initiated milk production for their very preterm infants, ≤1,750 g at birth. Following thematic saturation, results were validated through expert triangulation and member checking. Results: Twelve mothers were Hispanic, where three were English speaking and nine were Spanish speaking. Eleven mothers were non-Hispanic black and English speaking. We found themes pertaining to general experiences: (1) Breastfeeding intent impacts mothers' success in providing milk throughout the hospitalization; (2) Pumping milk for a hospitalized infant is repetitive, exhausting, and does not elicit the same emotional connection as breastfeeding; (3) Hospital providers are an important source of support, when sufficient time is spent to address ongoing issues; (4) Providing milk creates a unique sense of purpose when mothers otherwise feel a lack of control; and we found themes pertaining to the experiences of Hispanic and non-Hispanic black mothers: (1) Breastfeeding as a cultural norm influences mothers' intent to initiate and continue breastfeeding; (2) Hospital staff are viewed as more supportive when interactions and treatment are perceived as racially/ethnically unbiased and (3) when communication occurs in the primary language; and (4) Mother-infant separation creates logistical challenges that negatively impact ongoing milk production. Conclusions: While providing milk for a hospitalized very preterm infant is exhausting, and logistically challenging, Hispanic and non-Hispanic black mothers are inspired to do so because of their intent to breastfeed, support from hospital providers, and feelings of purpose.

Impact of Quality Improvement Program on Expressed Breastmilk Usage in Very Low Birth Weight Infants.

OBJECTIVE: To improve the usage of expressed breast milk in very low birth weight infants admitted in the neonatal intensive care unit of a tertiary centre in India. METHODS: Between April 2015 and August 2016, various Plan-do-act-study cycles were conducted to test change ideas like antenatal counselling including help of brochure and video, post-natal telephonic reminders within 4-6 hours of birth, standardization of Kangaroo mother care, and non-nutritive sucking protocol. Data was analyzed using statistical process control charts. RESULTS: 156 very low birth weight infants were delivered during the study period, of which 31 were excluded due to various reasons. Within 6 months of implementation, the proportion of very low birth weight infants who received expressed breast milk within 48 hours improved to 100% from 38.7% and this was sustained at 100% for next 8 months. The mean time of availability and volume of expressed breast milk within 48 hours, improved gradually from 73.3 h to 20.9 h and 4.7 mL to 15.8 mL, respectively. The mean proportion of expressed breast milk once infant reached a feed volume of 100 mL/kg/day also improved from 61.3% to 82.3%. CONCLUSIONS: Quality improvement interventions showed promising results of increased expressed breast milk usage in very low birth weight infants.

Promoting early expression of breast milk in mothers of preterm infants in a neonatal unit: a best practice implementation project.

OBJECTIVES: The aim of this implementation project was to optimize lactation success in mothers of preterm infants by ensuring early (as soon as possible and within six hours) and frequent (eight to 12 times/day) milk expression. INTRODUCTION: Evidence suggests that breast milk improves enteral feeding tolerance and neurodevelopmental outcomes and decreases the risk of necrotising enterocolitis and late onset sepsis in preterm infants. It is widely accepted that breast milk expression should commence as soon as possible and within six hours of delivery. RESULTS: Following implementation of the breast milk expression information pack and staff education program, compliance to clinical guideline recommendations improved considerably. An increase from 5/20 (25%) to 17/20 (85%) of women expressing milk within six hours of delivery was observed. The average expression times also increased: from 2.6 (2.0) to 6.1 (2.7) times in the first 24 hours and from 4.6 (1.7) to 7.8 (1.7) times between 24-48 hours. The compliance rate for milk expression within six hours of delivery and expression of eight to 12 times daily in the first 48 hours increased from 1/20 (5%) at baseline to 10/20 (50%) in the follow-up audit. CONCLUSION: The implementation of the breast milk information pack and staff education led to improvements in the milk expression practices of mothers who had preterm infants. As a result of this project, the information packs are now routinely given to all women at risk of delivering preterm or who have babies in the neonatal unit. Further audits will be undertaken in the future to determine sustainability of practice changes.

Early, regular breast-milk pumping may lead to early breast-milk feeding cessation.

OBJECTIVE: To estimate the effect of early, regular breast-milk pumping on time to breast-milk feeding (BMF) and exclusive BMF cessation, for working and non-working women. DESIGN: Using the Infant Feeding Practices Survey II (IFPS II), we estimated weighted hazard ratios (HR) for the effect of regular pumping (participant defined) compared with non-regular/not pumping, reported at month 2, on both time to BMF cessation (to 12 months) and time to exclusive BMF cessation (to 6 months), using inverse probability weights to control confounding. SETTING: USA, 2005-2007. SUBJECTS: BMF (n 1624) and exclusively BMF (n 971) IFPS II participants at month 2. RESULTS: The weighted HR for time to BMF cessation was 1·62 (95 % CI 1·47, 1·78) and for time to exclusive BMF cessation was 1·14 (95 % CI 1·03, 1·25). Among non-working women, the weighted HR for time to BMF cessation was 2·05 (95 % CI 1·84, 2·28) and for time to exclusive BMF cessation was 1·10 (95 % CI 0·98, 1·22). Among working women, the weighted HR for time to BMF cessation was 0·90 (95 % CI 0·75, 1·07) and for time to exclusive BMF cessation was 1·14 (95 % CI 0·96, 1·36). CONCLUSIONS: Overall, regular pumpers were more likely to stop BMF and exclusive BMF than non-regular/non-pumpers. Non-working regular pumpers were more likely than non-regular/non-pumpers to stop BMF. There was no effect among working women. Early, regular pumpers may need specialized support to maintain BMF.

Preterm infants' mothers' initiation and frequency of breast milk expression and exclusive use of mother's breast milk in neonatal intensive care units.

AIMS AND OBJECTIVES: To describe preterm infants' mothers' expressing practices and exclusive use of mother's breast milk in neonatal intensive care settings, as well as to explore whether mothers' and infants' characteristics are predictors of the mother's inadequate expressing practices and nonexclusive use of mothers' breast milk. BACKGROUND: Use of their own mother's milk decreases preterm infants' mortality and morbidity, but expression is exhausting for the mothers. Mothers' and infants' characteristics are associated with milk output and exclusive breastfeeding at discharge, as well as later in infancy. DESIGN: Cross-sectional study. METHODS: The data were collected through questionnaires in two neonatal units. Multiple logistic regression was used to determine whether mothers' and infants' characteristics are predictors of late expression initiation (>6 hr from birth), inadequate expression frequency (≤6 times per a day) and nonexclusive use of own mother's milk. RESULTS: The sample consisted of 129 mothers. One-third of the mothers had adequate expression practices. Half of the infants exclusively received their mother's own breast milk. Previous neonatal intensive care unit experience, poor psychological well-being, an infant's male gender, caesarean section and high gestational birth age were significant predictors of late expression initiation. None of the studied variables were significant predictors of inadequate expression frequency. Furthermore, lack of previous expression experience, financial woes and high gestational age were predictors of nonexclusive use of own mother's milk. CONCLUSIONS: Expression practices, as well as use of own mother's milk, were suboptimal. High gestational age was associated with both late expression initiation and nonexclusive breast milk use. The mothers maintained expression regardless of their well-being. RELEVANCE TO CLINICAL PRACTICE: Counselling and support are needed to avoid suboptimal expression practices. Special attention should be paid to mothers with moderately preterm infants, caesarean delivery, poor psychological well-being and financial woes.

Outcomes Associated With Type of Milk Supplementation Among Late Preterm Infants.

OBJECTIVE: To assess whether type of milk supplementation provided to breastfeeding late preterm infants was associated with hospital length of stay (LOS) or breastfeeding status at discharge. DESIGN: Retrospective chart review. SETTING: Tertiary care teaching hospital in the southern United States. PARTICIPANTS: Late preterm infants 35 0/7 to 36 6/7 weeks gestational age (N = 183) admitted to the mother-baby unit between November 1, 2014, and October 31, 2016. METHODS: The exposure of interest was type of milk supplementation, for example, expressed human milk, pasteurized donor human milk, and formula. Outcomes measured were LOS and breastfeeding status at discharge. Generalized Poisson regression models were used to compare LOS by type of milk supplementation. Modified Poisson regression models were used to estimate risk ratios and 95% confidence intervals for associations with breastfeeding status at discharge. RESULTS: The LOS for breastfed infants supplemented with expressed human milk and/or pasteurized donor human milk did not differ significantly from exclusively breastfed infants who received no supplement. Exclusively formula-fed infants had longer LOS of 3.2 days compared with 2.6 days for exclusively breastfed infants (p = .001). Breastfed infants who received any formula supplementation were 16% less likely to continue breastfeeding until day of discharge compared with breastfed infants who received human milk supplementation (risk ratio = .84, 95% confidence interval [.77, .92]). CONCLUSION: The high prevalence of supplementation among breastfeeding late preterm infants underscores the potential effect of type of milk supplementation on LOS and breastfeeding outcomes. Our findings suggest that human milk supplementation discourages transition to formula feeding before hospital discharge without increasing LOS.

Pumping Milk Without Ever Feeding at the Breast in the Moms2Moms Study.

BACKGROUND: More than 85% of contemporary lactating women in the United States express their milk at least sometimes. Some produce milk exclusively through pumping. We characterized women who pumped but never fed at the breast and compared their infant feeding practices with those of women who fed at the breast with or without pumping. SUBJECTS AND METHODS: Study participants were those delivered at Ohio State University Wexner Medical Center in 2011 and completed a questionnaire at 12 months postpartum (n = 478). We used bivariate and multivariate approaches (survival analysis) to compare women who pumped but never fed at the breast with women who fed at the breast with or without pumping. RESULTS: Women (n = 33, 6.9%) who pumped but never fed at the breast comprised a diverse group but were more likely to have delivered preterm and were of lower socioeconomic status on average. They initiated pumping and formula feeding earlier (median = day 1 after delivery) and were more likely to report difficulty making enough milk compared with women who fed at the breast with or without pumping. They had much shorter total duration of milk production (adjusted hazard ratio = 3.3, 95% confidence interval: 2.1, 5.2) after controlling for clinical and sociodemographic confounders. CONCLUSIONS: Pumping without feeding at the breast is associated with shorter milk feeding duration and earlier introduction of formula compared with feeding at the breast with or without pumping. Establishing feeding at the breast, rather than exclusive pumping, may be important for achieving human milk feeding goals.