Maternal response to two electric breast pumps

Is Maternal Body Weight or Composition Associated with Onset of Lactogenesis II, Human Milk Production, or Infant Consumption of Mother's Own Milk? A Systematic Review and Meta-Analysis

Maternal adiposity impacts lactation performance, but the pathways are unclear. We conducted a systematic review to understand whether maternal adiposity (body mass index [BMI] or percentage fat mass) is associated with onset of lactogenesis II (copious milk; hours), human milk production (expressed volume/24 h), and infant consumption of mother's own milk (volume/24 h). We used random-effects standard meta-analyses to compare the relative risk (RR) of delayed lactogenesis II (>72 h) between mothers classified as underweight (BMI <18.5 kg/m2), healthy weight (BMI, 18.5-24.9 kg/m2), and overweight/obese (BMI ≥25 kg/m2) and random-effects meta-regressions to examine associations with hours to lactogenesis II and infant milk consumption. The certainty of evidence was assessed using the Grading of Recommendations, Assessment, Development and Evaluation approach. We included 122 articles. Mothers with underweight (RR: 0.64; 95% CI: 0.49, 0.83; I2 = 39.48%; 8 articles/data points) or healthy weight status (RR: 0.67; 95% CI: 0.57, 0.79; I2 = 70.91%; 15 articles/data points) were less likely to experience delayed lactogenesis II than mothers with overweight/obesity. We found no association between maternal BMI and time to onset of lactogenesis II (β: 1.45 h; 95% CI: -3.19, 6.09 h; P = 0.52, I2 = 0.00%; 8 articles, 17 data points). Due to limited data, we narratively reviewed articles examining BMI or percentage fat mass and milk production (n = 6); half reported an inverse association and half no association. We found no association between maternal BMI (β: 6.23 mL; 95% CI: -11.26, 23.72 mL; P = 0.48, I2 = 47.23%; 58 articles, 75 data points) or percentage fat mass (β: 7.82 mL; 95% CI: -1.66, 17.29 mL; P = 0.10, I2 = 28.55%; 30 articles, 41 data points) and infant milk consumption. The certainty of evidence for all outcomes was very low. In conclusion, mothers with overweight/obesity may be at risk of delayed lactogenesis II. The available data do not support an association with infant milk consumption, but the included studies do not adequately represent mothers with obesity. This study was registered in PROSPERO as 285344.

Initiation and Duration of Breastfeeding in the Maternal Outcomes and Neurodevelopmental Effects of Antiepileptic Drugs Study

BACKGROUND AND OBJECTIVES

Breastfeeding has important health benefits for both mother and child. We characterize breastfeeding initiation and duration in mothers with epilepsy relative to control mothers in a large prospective cohort.

METHODS

The Maternal Outcomes and Neurodevelopmental Effects of Antiepileptic Drugs study is a prospective, multicenter observational, US cohort study. Pregnant individuals with and without epilepsy, aged 14-45 years, were enrolled between December 19, 2012, and February 11, 2016. Exclusion criteria included intelligence quotient (IQ) <70, and gestational age >20 weeks at enrollment. Breastfeeding was assessed through electronic diary and at study visits until 2 years postpartum. Odds of initiating breastfeeding was compared between cohorts using unadjusted and adjusted logistic regression models. Duration of breastfeeding was compared between cohorts using the log-rank test.

RESULTS

Three hundred fifty-one pregnant individuals with epilepsy and 105 pregnant controls were enrolled. Breastfeeding data were available for 325 mothers with epilepsy and 98 controls. Study cohorts were similar demographically except race (p = 0.008); 84.9% of mothers with epilepsy and 71.4% of controls were White. The mean IQ was lower in mothers with epilepsy compared with that in controls (97.7 vs 104.2, p < 0.001). Breastfeeding was initiated by 74.8% mothers with epilepsy and 88.8% controls; this difference was significant in unadjusted logistic regression (odds ratio [OR] 0.4 [95% CI 0.2, 0.7], p = 0.004), but not in adjusted model (OR 0.5 [95% CI 0.2, 1.0], p = 0.051). Factors associated with breastfeeding were higher maternal education and IQ. There was no difference in duration of breastfeeding between mothers with and without epilepsy (median duration 8.5 months vs 9.9 months, p = 0.793). Among mothers with epilepsy, both convulsive seizures and all seizures that impair awareness during pregnancy were associated with lower breastfeeding initiation (OR 0.4 [95% CI 0.2, 0.8], p = 0.013) and (OR 0.4 [95% CI 0.2, 0.8], p = 0.003, respectively). Any peripartum seizures were associated with shorter breastfeeding duration (median 6 months vs 9.7 months, [p = 0.040]).

DISCUSSION

Mothers with epilepsy were less likely to initiate breastfeeding compared with controls; however, this difference was not significant when controlling for maternal IQ and education level. Continuation of breastfeeding once initiated was not different between mothers with and without epilepsy. Seizure control was associated with breastfeeding initiation and duration in mothers with epilepsy.

TRIAL REGISTRATION INFORMATION

ClinicalTrials.gov identifier NCT01730170.

Prenatal Education Intervention for Increasing Knowledge and Changing Attitude Toward Offspring Obesity Risk Factors

This pre- and post-test quasi-experimental design study pilot tested an educational intervention designed to increase knowledge of and change attitudes toward prenatal factors that increase risk of childhood offspring obesity in 36 pregnant women. Educational intervention content included monitoring blood glucose, gestational weight gain in pregnancy, healthy lifestyle choices, and breastfeeding. Education intervention delivery method included: Verbal, written, and video. Participants’ knowledge improved after the intervention for most topics (p = .03–.000). Their attitude score also differed before and after intervention (p = .002). Video delivery mode was the most useful, attractive, and most helpful method. This study showed an education intervention could potentially increase pregnant women’s knowledge and attitudes toward offspring obesity risk factors.

Investigation of the Effect of Human Milk Expression Techniques on Milk Content: A Systematic Review

BACKGROUND

If the mother and infant cannot meet after birth, it is recommended to express milk and give it to the infant. There was evidence indicating that there might be decrease in essential nutrient values in human milk content depending on the expression technique in literature. The goal of this systematic review was to investigate the effect of human milk expression techniques on the macronutrient milk content and establish an evidence base for future studies.

METHODS

Studies investigating the effect of human milk expression techniques on milk content were reviewed without year limitations. A literature review was conducted in six electronic databases (MEDLINE, Web of Science, PubMed, ScienceDirect, CINAHL and Cochrane) until 30 May 2021, using the keywords of breast milk expression techniques, milk content and breast milk pumping.

RESULTS

From 258 articles initially screened, we included 6 articles in the systematic review. The fat, protein and lactose content of human milk was analyzed in the studies reviewed. It was concluded that there was no significant effect on the protein (9.7-9.8 g/dl and 2.1-2.1 g/dl, respectively) and lactose (6.50-6.53% and 6.1-6.1 g/dl, respectively) content of milk. However, the fat (58.30, 48.81g/l; 2.6-2.2 g/dl) content was affected.

CONCLUSIONS

This study investigated the effect of milk expression techniques on the macronutrient content of human milk, and it was concluded that there was no significant effect on the protein and carbohydrate content of milk. However, the fat content was affected. Limitation of this study is that some factors that might affect the content of human milk were not standardized sufficiently in the included studies.

Measuring Mothers' Viewpoints of Breast Pump Usage

Breastfeeding has short- and long-term positive influences on the health and wellbeing of the child. There are situations where breastfeeding does not occur and expressed or pumped mother's milk is used. Mothers and healthcare providers report problems or negative views on using pumps in studies across the globe. This systematic review and secondary analysis of 18 random control trials related to mothers' views of breast pumps examines the range of viewpoints gathered, the variety of measurement instruments used, how the outcomes are reported and the challenges that occur. It aims to inform critical reading of research as well as future research design. Devices which the mother views as comfortable and useful will facilitate more infants to receive human milk when direct breastfeeding does not occur, and they will have a positive influence on health and wellbeing.

Impact of caesarean section on breastfeeding indicators: within-country and meta-analyses of nationally representative data from 33 countries in sub-Saharan Africa

OBJECTIVE

To examine the impact of caesarean section on breastfeeding indicators-early initiation of breastfeeding, exclusive breastfeeding under 6 months and children ever breastfed (at least once)-in sub-Saharan Africa.

DESIGN

Secondary analysis of Demographic and Health Surveys (DHS).

SETTING

Thirty-three low-income and middle-income countries with a survey conducted between 2010 and 2017/2018.

PARTICIPANTS

Women aged 15-49 years with a singleton live last birth during the 2 years preceding the survey.

MAIN OUTCOME MEASURES

We analysed the DHS data to examine the impact of caesarean section on breastfeeding indicators using the modified Poisson regression models for each country adjusted for potential confounders. For each breastfeeding indicator, the within-country adjusted prevalence ratios (aPR) were pooled in random-effects meta-analysis.

RESULTS

The within-country analyses showed, compared with vaginal birth, caesarean section was associated with aPR for early initiation of breastfeeding that ranged from 0.24 (95% CI 0.17 to 0.33) in Tanzania to 0.89 (95% CI 0.78 to 1.00) in South Africa. The aPR for exclusive breastfeeding under 6 months ranged from 0.58 (95% CI 0.34 to 0.98) in Angola to 1.93 (95% CI 0.46 to 8.10) in Cote d'Ivoire, while the aPR for children ever breastfed ranged from 0.91 (95% CI 0.82 to 1.02) in Gabon to 1.02 (95% CI 0.99 to 1.04) in Gambia. The meta-analysis showed caesarean section was associated with a 46% lower prevalence of early initiation of breastfeeding (pooled aPR, 0.54 (95% CI 0.48 to 0.60)). However, meta-analysis indicated little association with exclusive breastfeeding under 6 months (pooled aPR, 0.94 (95% CI 0.88 to 1.01)) and children ever breastfed (pooled aPR, 0.98 (95% CI 0.98 to 0.99)) among caesarean versus vaginally born children.

CONCLUSIONS

Caesarean section had a negative influence on early initiation of breastfeeding but showed little difference in exclusive breastfeeding under 6 months and children ever breastfed in sub-Saharan Africa.

Low Dose of Abilify (Aripiprazole) in Combination With Effexor XR (Venlafaxine HCl) Resulted in Cessation of Lactation

Postpartum depression (PPD) is a relatively common experience for women, especially those who have a history of preconception and/or prenatal depression. In some cases, pharmaceutical treatment is required to treat the symptoms of PPD. Unfortunately, the use of some of these treatments may have unintended consequences that affect both the newborn and the new mother. Here we report a case where Abilify (aripiprazole) at a low dose (2 mg/day) was prescribed in conjunction with Effexor XR (venlafaxine HCl) at a high dose (225 mg/day), which resulted in the cessation of lactation.

Unintended pregnancy, prenatal care, newborn outcomes, and breastfeeding in women with epilepsy

Objective

To compare the proportions of unintended pregnancies, prenatal vitamin or folic acid (PNVF) use, adequate prenatal care visits, and breastfeeding among women with epilepsy (WWE) to women without epilepsy (WWoE).

Methods

The Pregnancy Risk Assessment Monitoring System (PRAMS) is an annual survey of randomly sampled postpartum women administered by the Centers for Disease Control and Prevention. We used PRAMS data from 13 states from 2009 to 2014 to compare the primary outcomes in WWE and WWoE, as well as our secondary outcomes of contraception practices, newborn outcomes, and time to recognition of pregnancy. We adjusted for maternal age, race, ethnicity, and socioeconomic status (SES), and we calculated odds ratios for these outcomes using logistic regression.

Results

This analysis included 73,619 women, of whom 541 (0.7%) reported epilepsy, representing 3,442,128 WWoE and 26,635 WWE through weighted sampling. In WWE, 55% of pregnancies were unintended compared to 48% in WWoE. After adjustment for covariates, epilepsy was not associated with unintended pregnancy or with inadequate prenatal care. WWE were less likely to report breastfeeding but more likely to report daily PNVF use. Newborns of WWE had higher rates of prematurity.

Conclusions

Although planning for pregnancy is of utmost importance for WWE, more than half the pregnancies in WWE were unintended. Maternal age and SES differences likely contribute to the higher rates in WWE compared to WWoE. The proportion of women reporting breastfeeding is lower in WWE despite studies indicating the safety of breastfeeding in WWE.

Strategically Positioned: Breastfeeding, Advocacy, and the Hands-On Nurse

Breastfeeding, a health behavior that provides well-known benefits for mothers, infants, and children, is an essential strategy to improve public health. Breastfeeding can reduce the incidence of infant illness and death and provides both short- and longterm physiological benefits to mothers. National and international government agencies and grassroots organizations supporting breastfeeding include the World Health Organization, the United Nations International Children's Emergency Fund, the World Alliance for Breastfeeding Action, the Centers for Disease Control and Prevention, and the La Leche League. In the United States, breastfeeding of infants was the norm until the late 1890s when the Progressive Era's emphasis on science and modernity led to the transition of childbirth from residential in-home births to community-based hospital births and the aggressive rise of the baby formula industry. By 1966, only 18% of mothers were exclusively breastfeeding their infants at hospital discharge. This drastic decrease in breastfeeding reduced the percentage of mothers and grandmothers who could share their breastfeeding knowledge and experience. Nurses who provide care for women and infants are essential stakeholders in bridging the breastfeeding knowledge gap by offering education on the short- and long-term health benefits of breastfeeding to both mother and baby and timely encouragement to mothers during the most significant time for establishing lactation.

Infant feeding practices among HIV-positive mothers at Tembisa hospital, South Africa

Background

Despite the nutritional, physiological and emotional benefits of breastfeeding, HIV-positive mothers cannot practise exclusive breastfeeding for six months because of a range of influences on their feeding choice – thereby creating a caveat for morbidity in infants.

Aim

This study explored factors influencing the infant feeding choice of HIV-positive mothers at a peri-urban hospital in Tembisa, South Africa.

Methods

This study was qualitative and was conducted among 30 purposefully selected postnatal HIV-positive mothers at Tembisa hospital, Gauteng, from May to June 2011. In-depth interviews were conducted mainly in isiZulu and Sepedi which were then transcribed into English. An open coding system of analysis was used for thematic analysis.

Results

Nurses significantly influenced the feeding choices of new mothers – sometimes with inconsistent information. The grandmothers of infants also influenced the new mothers’ feeding options, in some cases with the new mother coming under duress. Other relatives like the sisters and aunts of mothers appeared to significantly affect feeding choices. The time frames expressed for the initiation of a supplementary diet were as follows: before 1 month, at 1 month and at 4 months. The main reason was the belief that infants required more than breast milk as sustenance during this period.

Conclusion

In the postnatal hospital setting of this study, the feeding choices of mothers were influenced by nursing personnel. Nursing personnel could marry the influential ‘authority’ they have with correct and consistent information, in order to change feeding behaviour. Significant ‘others’ like grandmothers and other relatives also influenced decisions on infant feeding. As such, family dynamics need to be considered when encouraging breastfeeding.

Employer-Based Programs to Support Breastfeeding Among Working Mothers: A Systematic Review

BACKGROUND

Many mothers experience barriers to maintaining a breastfeeding relationship with their infants upon returning to work and, consequently, terminate breastfeeding earlier than recommended or intended. As such, employers are in a unique position to help further increase breastfeeding rates, durations, and exclusivity.

OBJECTIVE

The purpose of this review is to examine the literature regarding employer-based programs, policies, and interventions to support breastfeeding among working mothers.

MATERIALS AND METHODS

A systematic literature search was conducted for peer-reviewed articles published before April 2016. Studies were included if they focused on workplace-based lactation/breastfeeding support programs, policies, or interventions to promote breastfeeding among employees. For inclusion, articles must have measured at least one outcome, such as breastfeeding duration, breastfeeding exclusivity, or employee satisfaction.

RESULTS

Twenty-two articles were included, representing 10 different countries and both public- and private-sector employers, including governmental offices, schools, hospitals, manufacturing/industrial companies, and financial settings, among others. Providing a lactation space was the most common employer-based support accommodation studied, followed by breastfeeding breaks and comprehensive lactation support programs. The majority of studies analyzing these three support types found at least one positive breastfeeding and/or nonbreastfeeding outcome.

CONCLUSIONS

This review suggests that maintaining breastfeeding while working is not only possible but also more likely when employers provide the supports that women need to do so. Although some employers may have more extensive breastfeeding support policies and practices than others, all employers can implement a breastfeeding support program that fits their company's budget and resources.

Both Prenatal and Postnatal Interventions Are Needed to Improve Breastfeeding Outcomes in a Low-Income Population

BACKGROUND

Breastfeeding provides many health benefits for mothers and their infants that span their life course. Despite this, national breastfeeding rates are below benchmarks set by the CDC (Centers for Disease Control and Prevention). Breastfeeding rates in the Detroit low-income population are particularly low.

OBJECTIVE

To measure the effect of hospital-based prenatal and postnatal breastfeeding interventions on breastfeeding initiation and continuation rates in a low-income population. The interventions implemented were a prenatal breastfeeding education curriculum and a hospital-based breastfeeding support group.

METHODS

A total of 650 women were tracked via chart review and telephone survey after delivery to assess breastfeeding initiation, continuation, and goal achievement. The baseline group (n = 330) received care in the hospital-associated prenatal clinic before intervention implementation; the postintervention group (n = 320) received breastfeeding education and had a hospital-based breastfeeding support group made available to them, in which some participated. Data were analyzed using the chi-squared test and the Student's t-test.

RESULTS

Breastfeeding initiation rates were greater in the postintervention group (p < 0.0001). The breastfeeding continuation rate at or beyond 6 months did not differ among baseline and postintervention groups (p = 0.5), but was greater among women who also participated in the breastfeeding support group compared with women who participated in the prenatal intervention alone. Participation in interventions did not affect the rate, at which women reported meeting their breastfeeding goals.

CONCLUSION

Both prenatal education and ongoing postdischarge support are needed to improve breastfeeding continuation.

Exploring the influence of psychosocial factors on exclusive breastfeeding in Bangladesh

Exclusive breastfeeding is a proven benefit for both mothers and infants and is, therefore, an important public health priority. Intimate partner violence (IPV) is regarded as one of the potential psychosocial risk factors that may negatively affect exclusive breastfeeding (EBF). This study aimed to explore the influence of psychosocial factors including IPV on EBF. Cross-sectional survey data was collected from October 2015 to January 2016 in Chandpur District of Bangladesh from 426 married women, aged 15-49 years, who had at least one child 6 months of age or younger. Multivariate logistic regression models were used in order to investigate whether women who experienced IPV after childbirth, as well as other risk factors such as postpartum depression (PPD) and childhood sexual abuse, were more likely to face difficulties with EBF compared with women who had not experienced these same risk factors. Whilst the initiation rate of breastfeeding was 99.3%, at the time of the woman's interview, the overall EBF rate had fallen to 43.7%. Based on the adjusted model, women who experienced physical IPV (AOR 0.17, 95% CI [0.07, 0.40]) and psychological IPV (AOR 0.51, 95% CI [0.26, 1.00]) after childbirth and women who reported childhood sexual abuse (AOR 0.32, 95% CI [0.13, 0.80]) and PPD (AOR 0.20, 95% CI [0.09, 0.44]) were significantly less likely to exclusively breastfeed their infants than those who had not reported these experiences. Moreover, women with an intended pregnancy and high social support exhibited a higher likelihood of EBF. Our results suggest that preventing or reducing the occurrence of physical IPV, PPD and childhood sexual abuse may improve the EBF duration. Support from family members can assist in this process.

Methods of milk expression for lactating women

BACKGROUND

Breastfeeding is important, however not all infants can feed at the breast and methods of expressing milk need evaluation.

OBJECTIVES

To assess acceptability, effectiveness, safety, effect on milk composition, contamination and costs of methods of milk expression.

SEARCH METHODS

We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (21 March 2016), handsearched relevant journals and conference proceedings, and contacted experts in the field to seek additional published or unpublished studies. We also examined reference lists of all relevant retrieved papers.

SELECTION CRITERIA

Randomised and quasi-randomised trials comparing methods at any time after birth.

DATA COLLECTION AND ANALYSIS

Three review authors independently assessed trials for inclusion and risk of bias, extracted data and checked them for accuracy.

MAIN RESULTS

This updated review includes 41 trials involving 2293 participants, with 22 trials involving 1339 participants contributing data for analysis. Twenty-six of the trials referred to mothers of infants in neonatal units (n = 1547) and 14 to mothers of healthy infants at home (n = 730), with one trial containing mothers of both neonatal and healthy older infants (n = 16). Eleven trials compared one or more types of pump versus hand expression and 14 studies compared one type of pump versus another type of pump, with three of these studies comparing both hand expression and pump types. Twenty studies compared a specific protocol or adjunct behaviour including sequential versus simultaneous pumping protocols, pumping frequency, provision of an education and support intervention, relaxation, breast massage, combining hand expression with pumping and a breast cleansing protocol.Due to heterogeneity in participants, interventions, and outcomes measured or reported, we were unable to pool findings for most of the specified outcomes. It was not possible therefore to produce a 'Summary of findings' table in this update. Most of the included results were derived from single studies. Trials took place in 14 countries under a variety of circumstances and were published from 1982 to 2015. Sixteen of the 30 trials that evaluated pumps or products had support from the manufacturers. The risk of bias of the included studies was variable. Primary outcomesOnly one of the 17 studies examining maternal satisfaction/acceptability with the method or adjunct behaviour provided data suitable for analysis. In this study, self-efficacy was assessed by asking mothers if they agreed or disagreed with the following statement: 'I don't want anyone to see me (hand expressing/pumping)'. The study found that mothers who were using the electric pump were more likely to agree with the statement compared to mothers hand expressing, (mean difference (MD) 0.70, 95% confidence interval (CI) 0.15 to 1.25; P = 0.01, participants = 68). Mothers who were hand expressing reported that the instructions for expression were clearer compared to the electric pump, (MD -0.40, 95% CI -0.75 to -0.05; P = 0.02, participants = 68). Descriptive reporting of satisfaction in the other studies varied in the measures used, did not indicate a clear preference for one pump type, although there was satisfaction with some relaxation and support interventions.We found no clinically significant differences between methods related to contamination of the milk that compared any type of pump to hand expression (risk ratio (RR) 1.13, 95% CI 0.79 to 1.61; P = 0.51, participants = 28), manual pump compared to hand expression, (MD 0.20, 95% CI -0.18 to 0.58; P = 0.30, participants = 142) a large electric pump compared to hand expression (MD 0.10, 95% CI -0.29 to 0.49; P = 0.61, participants = 123), or a large electric pump compared to a manual pump (MD -0.10, 95% CI -0.46 to 0.26; P = 0.59, participants = 141).The level of maternal breast or nipple pain or damage was similar in comparisons of a large electric pump to hand expression (MD 0.02, 95% CI -0.67 to 0.71; P = 0.96, participants = 68). A study comparing a manual and large electric pump, reported sore nipples in 7% for both groups and engorgement in 4% using a manual pump versus 6% using an electric pump; and in one study no nipple damage was reported in the hand-expression group, and one case of nipple damage in each of the manual pump and the large electric pump groups.One study examined adverse effects on infants, however as the infants did not all receive their mothers' expressed milk, we have not included the results. Secondary outcomesThe quantity of expressed milk obtained was increased, in some studies by a clinically significant amount, in interventions involving relaxation, music, warmth, massage, initiation of pumping, increased frequency of pumping and suitable breast shield size. Support programmes and simultaneous compared to sequential pumping did not show a difference in milk obtained. No pump consistently increased the milk volume obtained significantly.In relation to nutrient quality, hand expression or a large electric pump were found to provide higher protein than a manual pump, and hand expression provided higher sodium and lower potassium compared to a large electric pump or a manual pump. Fat content was higher with breast massage when pumping; no evidence of difference was found for energy content between methods.No consistent effect was found related to prolactin change or effect on oxytocin release with pump type or method. Economic aspects were not reported.

AUTHORS' CONCLUSIONS

The most suitable method for milk expression may depend on the time since birth, purpose of expression and the individual mother and infant. Low-cost interventions including initiation of milk expression sooner after birth when not feeding at the breast, relaxation, massage, warming the breasts, hand expression and lower cost pumps may be as effective, or more effective, than large electric pumps for some outcomes. Variation in nutrient content across methods may be relevant to some infants. Small sample sizes, large standard deviations, and the diversity of the interventions argue caution in applying these results beyond the specific method tested in the specific settings. Independently funded research is needed for more trials on hand expression, relaxation and other techniques that do not have a commercial potential.

Which breast pump for which mother: an evidence-based approach to individualizing breast pump technology

The majority of new mothers in the United States use breast pumps in the first 4 months postbirth in order to achieve their personal human milk feeding goals. Although these mothers seek guidance from health-care professionals with respect to the type and use of breast pumps, there are few evidence-based guidelines to guide this professional advice. This paper reviews the evidence to facilitate professional individualization of breast pump recommendations using three categories of literature: the infant as the gold standard to which the pump is compared; the degree of maternal breast pump dependency (for example, the extent to which the breast pump replaces the infant for milk removal and mammary gland stimulation); and the stage of lactation for which the pump replaces the infant. This review can also serve to inform public and private payers with respect to individualizing breast pump type to mother-infant dyad characteristics.

Breastfeeding, Other Early Life Exposures and Childhood Leukemia and Lymphoma

Childhood cancer incidence increases and although rare, it is a leading cause of mortality. Leukemia and lymphoma comprise 40% of all cancers in children but little is known of their etiology. In this study, we examined the associations of breastfeeding and other early life exposures with childhood leukemia and lymphoma. A population-based case-control study carried out in 2011-2013 comprised mothers of 190 incidents (2005-2013) of leukemia/lymphoma cases aged 1-19 yr at diagnosis and 384 population-based controls. Interviews based on a computerized structured questionnaire were conducted with the mothers. Multivariate logistic regression models adjusted for potential confounders assessed the association between breastfeeding patterns and childhood leukemia/lymphoma. Ever breastfeeding category was associated with a 64% decreased risk for childhood leukemia/lymphoma lsqb;odds ratio (OR) = 0.36, 95% confidence interval (CI): 0.22, 0.60lrqb; and similar trends, with a dose-response effect, were observed for any breastfeeding (exclusive and/or partial) category for 6, 12, and 18+ mo. Other infant exposures associated with cancer risk were child iron supplementation (OR = 0.39, 95% CI: 0.26, 0.59), pet ownership (OR = 0.50, 95% CI: 0.33, 0.78), paternal smoking (OR = 1.93, 95% CI: 1.18, 3.15), and having older siblings (OR = 1.18, 95% CI: 1.05, 1.33). Breastfeeding-a controllable and modifiable exposure-is inversely associated with risk for childhood leukemia and lymphoma with a dose-response effect.

Effect of a pro-breastfeeding intervention on the maintenance of breastfeeding for 2 years or more: randomized clinical trial with adolescent mothers and grandmothers

BACKGROUND

Being an adolescent mother and cohabiting with the maternal grandmother have been shown to be risk factors for a shorter breastfeeding duration. The objective of this study was to assess whether the positive effects of a pro-breastfeeding intervention aimed at adolescent mothers and maternal grandmothers on the prevalence of breastfeeding observed in the first year of life were maintained at 2 years of age.

METHODS

This study is the continuation of a randomized clinical trial initiated in 2006 involving 323 adolescent mothers, their newborns and maternal grandmothers when cohabiting. The intervention consisted of six breastfeeding counseling sessions, the first one held at the maternity ward and the others at the participants' homes at 7, 15, 30, 60, and 120 days postpartum. The present study reports data collected when the children were 4 to 7 years old, concerning the maintenance of breastfeeding at 2 years. Data were analyzed using multivariable Poisson regression model with robust variance, with breastfeeding at 2 years of age as the outcome.

RESULTS

Maintenance of breastfeeding for 2 years or more was present in 32.2% of the sample. When the intervention and control groups were compared, the prevalence of breastfeeding at 2 years was similar (29.9 vs. 34.3%, respectively; p = 0.605). Multivariable analysis failed to reveal an association between exposure to the intervention and maintenance of breastfeeding at 2 years in the different models tested.

CONCLUSIONS

The positive impact of the intervention on the prevalence of breastfeeding observed in the first year of life was not maintained at 2 years of age.

TRIAL REGISTRATION

The study was registered at ClinicalTrials.gov on May 28, 2009 under protocol no. NCT00910377.

Risk factors for respiratory infections among children attending day care centres

BACKGROUND

Upper respiratory tract infection (URTI), lower respiratory tract infection (LRTI) and acute otitis media (AOM) are common in children attending day care centres.

OBJECTIVES

This study aimed to characterize the risk factors of URTI, LRTI and AOM in children attending day care.

METHODS

A cross-sectional study was conducted in children aged up to 3 years (n = 152) of six day care centres in Porto. Logistic regression was used on independent variables: mother-related, household-related, child-related and day care-related risk factors as predictors of the dependent variables: URTI, LRTI and AOM.

RESULTS

The risk of URTI increased as the number of children decreased [odds ratio (OR) = 0.620, 95% CI = 0.411-0.935], as the area per child decreased (OR = 0.434, 95% CI = 0.206-0.914) and as the disinfection of WC/diapers-change increased (OR = 2.56, 95% CI = 1.089-6.017). There was a higher risk of URTI if nasal aspirators (OR = 6.763, 95% CI = 1.022-44.753), rather than physiologic serum (OR = 5.296, 95% CI = 1.097-25.559), were used at day care centres. The risk of LRTI increased as the household size decreased (OR = 0.213, 95% CI = 0.048-0.937) and it was higher if the child had no siblings (OR = 7.831, 95% CI = 1.065-57.578). The risk of LRTI was higher if the child was not exclusively breastfed (OR = 24.612, 95% CI = 1.108-546.530) and the risk increased as the duration of exclusive breastfeeding decreased (OR = 0.396, 95% CI = 0.170-0.920). The risk of AOM increased as the birth body mass index (OR = 2.247, 95% CI = 1.011-4.992) and weight (OR = 1.607, 95% CI = 1.014-2.545) increased and if nasal aspirators were used (OR = 6.763, 95% CI = 1.022-44.753).

CONCLUSION

URTI were related with day care centres' risk factors, LRTI were associated with mother-related and household-related risk factors and AOM was connected with child-related risk factors.

The Impact of Mailed Samples of Infant Formula on Breastfeeding Rates

INTRODUCTION

Decades of research supports the health benefits of breastfeeding. Prior studies have shown that hospital discharge bags containing free samples of infant formula are associated with decreased breastfeeding exclusivity. This study aims to determine if receiving a free sample of infant formula in the mail has an impact on breastfeeding duration and exclusivity.

MATERIALS AND METHODS

This was a cohort study analyzing data from the Infant Feeding Practices Study II. The main outcomes of interest were any breastfeeding through 12 months of age and exclusive breastfeeding through 6 months of age. The main predictor of interest was receipt of a free sample of infant formula in the mail around the time of the infant's birth. Logistic regression models were developed to evaluate the association between the outcomes and predictor of interest at each month.

RESULTS

This study included 3,031 infants; mothers of 1,741 (57.4%) received a sample of infant formula in the mail. There was no difference in the likelihood of any breastfeeding at each month among those who received formula in the mail compared with those who did not. There was also no difference in exclusive breastfeeding through 5 months; however, by 6 months of age infants whose mothers received formula in the mail were less likely to be exclusively breastfed (odds ratio = 0.57; 95% confidence interval, 0.37, 0.89).

CONCLUSIONS

Receiving infant formula in the mail decreases the likelihood of exclusive breastfeeding by 6 months of age while having no impact on the duration of any breastfeeding.

Breastfeeding: An Unknown Factor to Reduce Heart Disease Risk Among Breastfeeding Women

BACKGROUND

Breastfeeding confers many health benefits not only to babies but also to their lactating mothers. Breastfeeding is a notable protective factor in the Gail model for breast cancer and is protective for heart disease. Although individuals in the Appalachian region have lower risk of developing breast cancer, their risk of heart disease is elevated compared with the national value for the United States.

SUBJECTS AND METHODS

We surveyed 155 predominantly breastfeeding mothers of toddlers under 3 years old, recruited through parenting groups, daycares, and county extension in Appalachian West Virginia. Participants were asked their perceived comparative risks for breast cancer and heart disease and why they felt their risk was higher, same, or lower than that of the general population.

RESULTS

For breast cancer, 29.7% felt their risk was lower than the general population. For heart disease, 26.5% felt their risk was lower than the general population. Although these risks were highly correlated (p=0.006), there was considerable variability in responses (p<0.03). Qualitative responses for breast cancer risk frequently included breastfeeding (30.3%) and family history (30.3%). Qualitative responses for heart disease noted family history (36.1%) but did not include breastfeeding. A regression analysis found that greater family history, shorter duration of breastfeeding, and fewer pregnancies were associated with greater breast cancer risk perceptions. Family history, lower household income, and current smoking were associated with greater heart disease risk perceptions.

CONCLUSIONS

These well-educated, predominantly lactating women did not know the protective effects of breastfeeding for heart disease. Increased educational efforts about heart disease may be helpful to encourage more women to breastfeed.

Maternal and Hospital Factors Associated with First-Time Mothers' Breastfeeding Practice: A Prospective Study

Continuity of breastfeeding is infrequent and indeterminate. Evidence is lacking regarding factors associated with breastfeeding at different postpartum time points. This prospective study investigated the change in, and correlates of, breastfeeding practices after delivery at a hospital and at 1, 3, and 6 months postpartum among first-time mothers. We followed a cohort of 300 primiparous mothers of Taiwan who gave birth at two hospitals during 2010-2011. Logistic and Cox regression analyses were performed to determine factors that were correlated with breastfeeding practices. In the study sample, the rate of exclusive breastfeeding during the hospital stay was 66%; it declined to 37.5% at 1 month and 30.2% at 3 months postpartum. Only 17.1% of women reported continuing breastfeeding at 6 months. Early initiation of breastfeeding, rooming-in practice, and self-efficacy were significantly related to exclusive breastfeeding during the hospital stay. After discharge, health literacy, knowledge, intention, and self-efficacy were positively and significantly associated with breastfeeding exclusivity. Later initiation (hazard ratio=1.53; 95% confidence interval, 1.05, 1.97), shorter intention (hazard ratio=1.42; 95% confidence interval, 1.13, 1.68), and self-efficacy (hazard ratio=0.98; 95% confidence interval, 0.96, 0.99) were important predictors of breastfeeding cessation within 6 months of delivery. Continuous breastfeeding practice for 6 months is challenging and difficult for new mothers. Results showed that factors related to breastfeeding varied over time after delivery. Interventions seeking to sustain breastfeeding should consider new mothers' needs and barriers at different times.

Prepregnancy obesity and breastfeeding noninitiation in the United States: an examination of racial and ethnic differences

BACKGROUND

Prepregnancy overweight/obesity can adversely affect breastfeeding initiation, but studies examining this association among different racial/ethnic groups of U.S. women are limited. This study used a large, nationally representative sample to assess racial/ethnic differences in breastfeeding noninitiation among U.S. women of different body mass index (BMI) classifications.

MATERIALS AND METHODS

This study analyzed data from the Pregnancy Risk Assessment Monitoring System, including 95,141 women who delivered a live, singleton baby from 2009 to 2011 and provided BMI and breastfeeding information. Prepregnancy BMI was categorized as underweight (<18.5 kg/m(2)), normal weight (18.5-24.9 kg/m(2)), overweight (25.0-29.9 kg/m(2)), and obese (≥30.0 kg/m(2)). Breastfeeding initiation was reported as having ever breastfed after delivery (yes or no). Adjusted models, which included only potential confounders resulting in a 10% or greater change in estimate, generated adjusted odds ratios (AOR) and 95% confidence intervals (CI) for breastfeeding noninitiation. Analysis was stratified by race/ethnicity.

RESULTS

Compared with normal weight non-Hispanic white women, the odds of breastfeeding noninitiation were 17% and 25% higher among overweight (AOR=1.17, 95% CI=1.07-1.29) and obese (AOR=1.25, 95% CI=1.14-1.36) non-Hispanic white women, respectively. Among non-Hispanic black women, the odds of breastfeeding noninitiation were 29% higher only in obese women compared with normal weight non-Hispanic black women. No association was observed among Hispanic women or women of other races.

CONCLUSIONS

Prepregnancy BMI is a significant predictor for breastfeeding noninitiation for non-Hispanic white and non-Hispanic black women. Further exploration of the differences underlying the association between prepregnancy BMI and breastfeeding behaviors among racial subpopulations of women in the United States is warranted.

Breastfeeding and ovarian cancer risk: a systematic review and meta-analysis of 40 epidemiological studies

The present systematic review and meta-analysis was conducted to assess any association between breastfeeding and the risk of ovarian cancer. A systematic search of published studies was performed in PUBMED and EMBASE and by reviewing reference lists from retrieved articles through March 2013. Data extraction was conducted independently by two authors. Pooled relative risk ratios were calculated using random-effect models. Totals of 5 cohort studies and 35 case-control studies including 17,139 women with ovarian cancer showed a 30% reduced risk of ovarian cancer when comparing the women who had breastfed with those who had never breastfed (pooled RR = 0.70, 95% CI: 0.64-0.76; p = 0.00), with significant heterogeneity in the studies (p = 0.00; I2 = 76.29%). A significant decreasd in risk of epithelial ovarian cancer was also observed (pooled RR = 0.68, 95% CI: 0.61-0.76). When the participants were restricted to only parous women, there was a slightly attenuated but still significant risk reduction of ovarian cancer (pooled RR = 0.76, 95% CI: 0.69-0.83). For total breastfeeding duration, the pooled RRs in the < 6 months, 6-12 months and > 12 months of breastfeeding subgroups were 0.85 (95% CI: 0.77-0.93), 0.73 (95% CI: 0.65-0.82) and 0.64 (95%CI: 0.56-0.73), respectively. Meta-regression of total breastfeeding duration indicated an increasing linear trend of risk reduction of ovarian cancer with the increasing total breastfeeding duration (p = 0.00). Breastfeeding was inversely associated with the risk of ovarian cancer, especially long-term breastfeeding duration that demonstrated a stronger protective effect.

Methods of milk expression for lactating women

BACKGROUND

This is an update of a 2008 Cochrane review. Breastfeeding is important. However, not all infants can feed at the breast and methods of expressing milk need evaluation.

OBJECTIVES

To assess acceptability, effectiveness, safety, effect on milk composition, contamination and cost implications of methods of milk expression.

SEARCH METHODS

We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (March 2014), CINAHL (1982 to March 2014), conference proceedings, secondary references and contacted researchers.

SELECTION CRITERIA

Randomised and quasi-randomised trials comparing methods at any time after birth.

DATA COLLECTION AND ANALYSIS

Three authors independently assessed trials, extracted data and assessed risk of bias.

MAIN RESULTS

This updated review includes 34 studies involving 1998 participants, with 17 trials involving 961 participants providing data for analysis. Eight studies compared one or more types of pump versus hand expression and 14 studies compared one type of pump versus another type of pump, with three of these studies comparing both hand expression and multiple pump types. Fifteen studies compared a specific protocol or adjunct behaviour including sequential versus simultaneous pumping protocols (five studies), pumping > 4 times per day versus < 3 times per day (one study), provision of a milk expression education and support intervention to mothers of preterm infants versus no provision (one study), provision of audio/visual relaxation to mothers of preterm infants versus no specific relaxation (two studies), commencing pumping within one hour of delivery versus between one to six hours (one study), breast massage before or during pumping versus no massage (two studies, of which one also tested a second behaviour), therapeutic touch versus none (one study), warming breasts before pumping versus not warming breasts (one study), combining hand expression with pumping versus pumping alone (one study) and a breast cleansing protocol versus no protocol (one study).There were insufficient comparable data on outcomes to undertake meta-analysis and data reported relates to evidence from single studies.Only one of the 17 studies examining maternal satisfaction/acceptability provided data in a way that could be analysed, reporting that mothers assigned to the pumping group had more agreement with the statement 'I don't want anyone to see me pumping' than mothers in the hand expression group and the statement 'I don't want anyone to see me hand expressing' (n = 68, mean difference (MD) -0.70, 95% confidence interval (CI) -1.25 to -0.15, P = 0.01), and that mothers found instructions for hand expression were clearer than for pumping (n = 68, MD 0.40, 95% CI 0.05 to 0.75, P = 0.02). No evidence of a difference was found between methods related to adverse effects of milk contamination (one study, n = 28, risk ratio (RR) 0.89, 95% CI 0.62 to 1.27, P = 0.51), (one study, n = 142 milk samples, MD 0.20, 95% CI -0.18 to 0.58, P = 0.30), (one study, n = 123 milk samples, MD 0.10, 95% CI -0.29 to 0.49, P = 0.61), (one study, n = 141 milk samples, MD -0.10, 95% CI -0.46 to 0.26, P = 0.59 ); or level of maternal breast or nipple pain or damage (one study, n = 68, MD 0.02, 95% CI -0.67 to 0.71, P = 0.96).For the secondary outcomes, greater volume was obtained when mothers with infants in a neonatal unit were provided with a relaxation tape or music-listening interventions to use while pumping, when the breasts was warmed before pumping or massaged while pumping.Initiation of milk pumping within 60 minutes of birth of a very low birthweight infant obtained higher mean milk quantity in the first week than the group who initiated pumping later. No evidence of difference in volume was found with simultaneous or sequential pumping or between pumps studied. Differences between methods was found for sodium, potassium, protein and fat constituents; no evidence of difference was found for energy content.No consistent effect was found related to prolactin change or effect on oxytocin release with pump type or method. Economic aspects were not reported.Most studies were classified as unclear or low risk of bias. Most studies did not provide any information regarding blinding of outcome assessment. Fifteen of the 25 studies that evaluated pumps or products had support from the manufacturers.

AUTHORS' CONCLUSIONS

The most suitable method for milk expression may depend on the time since birth, purpose of expression and the individual mother and infant. Low-cost interventions including early initiation when not feeding at the breast, listening to relaxation music, massage and warming of the breasts, hand expression and lower cost pumps may be as effective, or more effective, than large electric pumps for some outcomes. Small sample sizes, large standard deviations, and the diversity of the interventions argue caution in applying these results beyond the specific method tested in the specific settings.

Building Perinatal Case Manager Capacity Using Quality Improvement

Improving breastfeeding rates among Black women is a potential strategy to address disparities in health outcomes that disproportionately impact Black women and children. This quality improvement (QI) initiative aimed to improve perinatal case manager knowledge and self-efficacy to promote breastfeeding among Black, low-income women who use services through Boston Healthy Start Initiative. QI methodology was used to develop and test a two-part strategy for perinatal case managers to promote and support breastfeeding. A positive change was observed in infant feeding knowledge and case manager self-efficacy to promote breastfeeding. Among the 24 mothers participating in this QI initiative, 100% initiated and continued breastfeeding at 1 week postpartum, and 92% were breastfeeding at 2 weeks postpartum.

Healthy Birth Practice #6: Keep Mother and Baby Together- It's Best for Mother, Baby, and Breastfeeding

Mothers and babies have a physiologic need to be together at the moment of birth and during the hours and days that follow. Keeping mothers and babies together is a safe and healthy birth practice. Evidence supports immediate, uninterrupted skin-to-skin care after vaginal birth and during and after cesarean surgery for all stable mothers and babies, regardless of feeding preference. Unlimited opportunities for skin-to-skin care and breastfeeding promote optimal maternal and child outcomes. This article is an updated evidence-based review of the "Lamaze International Care Practices That Promote Normal Birth, Care Practice #6: No Separation of Mother and Baby, With Unlimited Opportunities for Breastfeeding," published in The Journal of Perinatal Education, 16(3), 2007.

Perinatal programming prevention measures

Over the past 10 years, there has been outstanding scientific progress related to perinatal programming and its epigenetic effects in health, and we can anticipate this trend will continue in the near future. We need to make use and apply these achievements to human neurodevelopment via prevention interventions. Based on the concept of the interaction between genome and ambiome, this chapter proposes low-cost easy-implementation preventive strategies for maternal and infant health institutions.Breastfeeding and human milk administration are the first preventive measures, as has been reviewed in the policy statement of the American Academy of Pediatrics. Another strategy is the Safe and Family-Centered Maternity Hospitals initiative that promotes and empowers the inclusion of the families and the respect for their rights, especially during pregnancy and birth. (This change of paradigm was approved and is recommended by both United Nations Children's Fund, UNICEF, and Pan American Health Organization, PAHO.) Then, there is also an important emphasis given to the sacred hour-which highlights the impact of bonding, attachment, and breastfeeding during the first hour of life-the pain prevention and treatment in newborns, the control of the "new morbidity" represented by late preterm infants, and finally, the importance of avoiding intrauterine and extrauterine growth restriction. (However, there are not yet clear recommendations about nutritional interventions in order to diminish the potential metabolic syndrome consequence in the adult.).

Vitamins, fatty acids, and antioxidant capacity stability during storage of freeze-dried human milk

Although freezing is the most common method used to preserve human milk, nutritional and immunological components may be lost during storage. Freeze-drying could increase the shelf life of human milk, while preserving its original characteristics. Seventy-two samples of freeze-dried human milk were stored for different periods of time, up to a maximum of 3 months, at 4 °C or 40 °C. Vitamin C, tocopherols, antioxidant capacity, and fatty acids composition were analyzed. A new HILIC-UHPLC method improving vitamin C determination was also validated. Ascorbic acid and total vitamin C concentrations significantly decreased at both temperatures, while antioxidant capacity only decreased at 40 °C. Fatty acids composition and both γ-tocopherol and δ-tocopherol contents remained unaltered. The stability after storage of freeze-dried milk was higher than that reported for frozen or fresh milk indicating that freeze-drying is a promising option to improve the preservation of human milk in banks.

Pharmacotherapy of postpartum depression: an update

INTRODUCTION

Postpartum depression (PPD) is a common and serious illness that affects up to 14% of women in the first month after childbirth. We present an update on the pharmacologic treatment of PPD, although there continues to be a lack of large, randomized controlled trials (RCTs).

AREAS COVERED

A review of the literature on the use of antidepressants, hormonal supplements and omega-3 fatty acids for the prevention and the treatment of PPD published since the original review in 2009 and the authors' opinion on the current status of the pharmacological treatment of PPD are covered. An electronic search was performed by using PubMed, Medline and PsychINFO. Inclusion criteria were: i) empirical articles in peer-reviewed English-language journals; ii) well-validated measures of depression; and iii) a uniform scoring system for depression among the sample.

EXPERT OPINION

Since the last Expert Opinion review, four antidepressant treatment studies and one prevention study of PPD have been published. Six RCTs evaluating the use of omega-3 fatty acids (four for prevention and two for treatment) have been published. There continues to be lack of data regarding the pharmacotherapy of PPD. However, serotonin reuptake inhibitors should be considered first-line for women with PPD after it has been determined that the proper diagnosis is not bipolar disorder. It is important to individualize treatment for women with PPD and consider the risks and benefits of treatment while breastfeeding.

Increased breastfeeding rates in black women after a treatment intervention

There has been a considerable increase in rates of breastfeeding in the United States. Despite these trends, black women continue to fall below medical recommendations. Impoverished and poorly educated women also have a comparatively lower rate of breastfeeding. Provider encouragement and supportive interventions increase breastfeeding initiation among women of all backgrounds. The data presented come from a three-site randomized controlled bilingual depression treatment trial from 2005 to 2011 that examined the comparative effectiveness of interpersonal psychotherapy and a parenting education program. Breastfeeding education and support were provided for the majority of participants in each intervention. Breastfeeding status was queried at postpartum week 4. We found higher rates of breastfeeding in black women compared with those reported in national surveys. The black breastfeeding rate did not significantly differ from that of white or Hispanic women. American-born black women were just as likely to breastfeed as American-born white women, both at significantly greater rates than American-born Hispanic women. We also found no differences in breastfeeding rate in poorly educated and impoverished women. These data must be seen against the backdrop of a significant intervention to treat depression. Because breastfeeding interventions have been shown to increase breastfeeding rates, the support provided in our study likely increased rates in groups that lag behind.

Human milk: a source of more life than we imagine

The presence of bacteria in human milk has been acknowledged since the seventies. For a long time, microbiological analysis of human milk was only performed in case of infections and therefore the presence of non-pathogenic bacteria was yet unknown. During the last decades, the use of more sophisticated culture-dependent and -independent techniques, and the steady development of the -omic approaches are opening up the new concept of the ‘milk microbiome’, a complex ecosystem with a greater diversity than previously anticipated. In this review, possible mechanisms by which bacteria can reach the mammary gland (contamination versus active migration) are discussed. In addition, the potential roles of human milk for both infant and maternal health are summarised. A better understanding of the link between the milk microbiome and health benefit, the potential factors influencing this relationship and whether or not it can be influenced by nutrition is required to open new avenues in the field of pregnancy and lactation.

Human milk, a concrete risk for infection?

Breastfeeding should be considered a public health issue and the reference normative standards for infant feeding at least to the 6th month of life, with continuation of breastfeeding for 1 year or longer as mutually desired by mother and infant. Numerous studies demonstrate that breastfeeding results in improved infant and maternal health. Moreover the reduction of the risk of severe retinopathy of prematurity, sepsis and necrotizing enterocolitis is particularly evident in preterm infants. There are a limited number of medical conditions in which breastfeeding is contraindicated, including some maternal infectious diseases. During breastfeeding the baby can be infected by mother's pathogens with several routes of transmission that can be considered, such as respiratory secretions and droplets (e.g. Adenovirus, Influenza virus, Respiratory Syncytial Virus, Haemophilus, Mycoplasma) direct contact with lesions in the breast and nipple (e.g. HSV 1-2, VZV, Treponema) and breast milk. Frequently, in case of infection, different routes of transmission are contemporary implicated. The basic assumption is that breastfeeding is rarely contraindicated during maternal infections, a few exceptions are HTVL-I and HIV in industrialized country. The theoretic risk for transmission trough breast milk should be discussed and balanced with the benefits of breast milk, so the mother and parents can make an informed decision concerning infant feeding.

"Breastfeeding" by feeding expressed mother's milk

This article provides the pediatric community with a practical overview of milk expression and an update on the recent literature. Approaches for working mothers, preterm infants, critically ill infants, and mothers before lactogenesis II are presented separately, as these groups may benefit from practices tailored to individual needs.

Physician breastfeeding education leads to practice changes and improved clinical outcomes

BACKGROUND AND OBJECTIVES

Lack of physician knowledge about breastfeeding is associated with decreased initiation and continuation of breastfeeding by patients. We evaluated the effects of a breastfeeding education program on physicians' breastfeeding knowledge, attitudes, and beliefs, measured changes in clinical practice, and examined breastfeeding rates of patients of participating physicians.

STUDY DESIGN AND METHODS

Six breastfeeding sessions addressed breastfeeding problem-solving and counseling and specific clinical issues including mastitis, perceived insufficient milk, poor infant weight gain, and return to work. We measured physicians' breastfeeding knowledge, attitudes, and beliefs before and after curriculum implementation and also measured changes in practice. We analyzed breastfeeding rates of patients in the practice before, during, and after the intervention.

RESULTS

We studied 24 residents and 15 faculty members at the intervention site; there were 12 residents and nine faculty in a similar control program. Attendance at education sessions improved breastfeeding knowledge (p<0.01) and attitudes/beliefs (p=0.03). Participants identified 15 unique practice changes with a strong commitment to make these changes (4.7 on a 5-point scale) and fulfillment of practice change of 3.6. Participation in education sessions improved patients' rates of any breastfeeding at 4 and 6 months and of full breastfeeding at 4 months.

CONCLUSIONS

A breastfeeding education program at a semirural residency program improved physicians' breastfeeding knowledge. Implementation of practice changes was fair. Two years into the intervention, breastfeeding rates improved for patients of the physicians with high levels of participation in the program.

Effectiveness of four manual breast pumps for mothers after preterm delivery in a developing country

BACKGROUND

Hospital-grade electric pumps may be useful to initiate and sustain adequate milk production for mothers who are unable to breast-feed their babies hospitalized at special care nurseries (SCN), but their cost is generally not affordable for SCN and for most mothers in developing countries. Therefore, manual breast pumps (MBPs) can be an alternative, but the best option is unknown considering clinical parameters and mothers' preference from among currently available MBPs.

OBJECTIVE

To compare the effectiveness of four MBPs in terms of milk volume, nutritional composition, and breast emptying in order to assist in making a choice for health care personnel and mothers in SCN settings. Duration of expression and maternal preference were also evaluated as secondary outcomes.

METHODS

Mothers of preterm infants used 4 MBPs in a random order, 2 with a squeeze-handle mechanism (Isis and Harmony) and 2 with a cylindrical mechanism (Little Heart and Evenflo), both at the hospital and in home settings using each pump over one 24-hour period.

RESULTS

Milk volume, nutritional composition, breast emptying, and duration of expression were not different among MBPs. Scale of maternal preference rated higher those with the squeeze-handle mechanism than the cylindrical mechanism (p < 0.05).

CONCLUSIONS

There was no difference found in the effectiveness across the four pumps tested. The mothers' rating for comfort and ease of use showed a marked difference between pumps. These factors, plus cost, need to be considered when evaluating manual pumps for use in SCN settings in developing countries.

Estimated dose exposure of the neonate to buprenorphine and its metabolite norbuprenorphine via breastmilk during maternal buprenorphine substitution treatment

OBJECTIVE

The aim of the present study was to estimate the dose of buprenorphine and its primary metabolite norbuprenorphine that a breastfed infant would receive during maternal maintenance treatment with buprenorphine.

STUDY DESIGN

Seven pregnant opioid-dependent women taking buprenorphine (median, 7 mg/day; range, 2.4-24 mg) and who intended to breastfeed were recruited. After lactation was established, several milk samples were collected from each subject over a 24-hour dose interval, and buprenorphine and norbuprenorphine concentrations were measured by liquid chromatography-tandem mass spectrometry. The average concentration (C(avg)) across the dose interval was estimated as for both buprenorphine and norbuprenorphine (as buprenorphine equivalents). Absolute infant dose (AID), defined as C(avg) × daily milk intake, and relative infant dose (RID), defined as 100×AID/weight-adjusted maternal daily dose, via milk were calculated, assuming a milk intake of 0.15 L/kg/day. The infant's health and progress were assessed directly and by questionnaire on the study day.

RESULTS

Mean (95% confidence interval) norbuprenorphine concentration in milk and AID values (1.94 [0.79-3.08] μg/L and 0.29 [0.12-0.46] μg/kg/day, respectively) were approximately half those for buprenorphine (3.65[1.61-5.7] μg/L and 0.55 [0.24-0.85] μg/kg/day, respectively). Similarly, the mean RID values were 0.18% (0.11-0.25%) for norbuprenorphine and 0.38% (0.23-0.53%) for buprenorphine. The breastfed infants showed no adverse effects, were all in good health, and were progressing as expected.

CONCLUSION

Thus the dose of buprenorphine and norbuprenorphine received via milk is unlikely to cause any acute adverse effects in the breastfed infant.

Development of the breast milk expression experience measure

Exclusive breastfeeding provides optimal nutrition through 6 months. Recent research has shown that milk expression may affect breastfeeding duration. A woman's experience with milk expression might mediate the effect of milk expression on breastfeeding duration. The objective of this study was to develop a measure to evaluate women's experiences of expressing milk. Based on the available literature, we developed a brief measure of the Breast Milk Expression Experience (BMEE) assessing three dimensions: (1) social support for milk expression; (2) ease of learning how to express milk; and (3) personal experiences of milk expression. All items used 1-5 Likert scales, with higher scores indicating better experiences. We administered the items immediately after expression to 68 mothers who expressed milk post-partum. We evaluated this measure for reliability using Cronbach's alpha. Mothers completing the BMEE were 57% primiparous with 75% vaginal births. The BMEE demonstrated appropriate reliability with a Cronbach's alpha of 0.703 for the summary index and 0.719-0.763 for social support, learning experience and personal experience subscales. The BMEE also indicated good predictive validity; of the six mothers who had a mean score <3 on the 11-item scale post-partum, two (33.3%) were expressing breast milk at 1 month, compared with 37 (80.4%) of the 46 mothers who had a mean score ≥3 on the 11-item scale post-partum (P = 0.012). The BMEE is a promising measure of milk expression experience in this population. Use of this measure may allow improved understanding of women's experiences expressing milk.

Breastfeeding the infant with congenital diaphragmatic hernia post extracorporeal membrane oxygenation

Infants born with congenital diaphragmatic hernia (CDH) often require extracorporeal membrane oxygenation (ECMO). Infants on ECMO may experience a long period of being nothing by mouth (NPO) while receiving parenteral nutrition. Once the infant with CDH is repaired and off ECMO, human milk should be used to initiate enteral feedings. Human milk provides immunologic, developmental, and nutritional protection for these highrisk infants and may be crucial in decreasing morbidities commonly associated with post-ECMO survivors. These mother-infant dyads require extensive lactation support to ensure maintenance of milk supply and successful transition to direct breastfeeding. Three case studies are presented as exemplars to demonstrate how breastfeeding success can be achieved even in the most vulnerable infants.

Methods of milk expression for lactating women

BACKGROUND

This is an update of a 2008 Cochrane review. Breastfeeding is important. However, not all infants can feed at the breast and methods of expressing milk need evaluation.

OBJECTIVES

To assess acceptability, effectiveness, safety, effect on composition, contamination and cost implications of methods of milk expression.

SEARCH METHODS

We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (20 January 2011), CINAHL (1982 to January 2011), conference proceedings, secondary references and contacted researchers.

SELECTION CRITERIA

Randomised and quasi-randomised trials comparing methods at any time after birth, and crossover trials commencing at least 28 days after birth.

DATA COLLECTION AND ANALYSIS

Three authors independently assessed trials, extracted data and assessed risk of bias. Data were checked for accuracy.

MAIN RESULTS

We included 23 studies with 10 studies (632 mothers) providing data for analysis.Mothers provided with a relaxation tape produced more milk than mothers who were not (mean difference (MD) 34.70 ml/single expression, 95% confidence interval (CI) 9.51 to 59.89, P = 0.007). A lower milk volume over six days was reported when comparing hand expression to the electric pump (standardised mean difference (SMD) -1.00 ml, 95% CI -1.64 to -0.36, P = 0.002); other studies of the same pump using different measures did not find a significant difference (12 to 36 hours postpartum SMD -0.38 cc, 95% CI -0.86 to 0.10, P = 0.12); day five postpartum SMD -0.62 ml/day, 95% CI -1.43 to 0.19, P = 0.13). No evidence of difference in volume was found with simultaneous or sequential pumping, or between manual and electric pumps studied. One study reported a higher sodium concentration in hand expressed milk compared to a manual pump (SMD 0.59 mmol/L, 95% CI 0.22 to 0.96, P = 0.002) and to an electric pump (SMD 0.70 mmol/L, 95% CI 0.32 to 1.09, P = 0.0003), and lower potassium concentration compared to a manual pump (MD -0.37 mmol/L, 95% CI 0.00 to 0.73, P = 0.05) or to an electric pump (SMD -0.32 mmol/L, 95% CI -0.69 to 0.06, P = 0.10). No evidence of difference was found for energy content, milk contamination or adverse effects. Reports of maternal views were not comparable. Economic aspects were not reported.  

AUTHORS' CONCLUSIONS

The most suitable method for milk expression may depend on the time since birth, purpose of expression and the individual mother and infant. Low cost interventions including early initiation when not feeding at the breast, relaxation, hand expression and lower cost pumps may be as effective, or more effective, than large electric pumps for some outcomes. Small sample sizes, large standard deviations, small number of studies reviewed, and the diversity of the interventions argue caution in applying these results beyond the specific method tested in the specific settings.

Effect of warm breastshields on breast milk pumping

The effect of using a warm breastshield on the efficiency, effectiveness, and comfort of expressing milk with an electric breast pump was assessed. The authors tested a standard breastshield at 25°C and a breastshield warmed to 39°C on 25 mothers using their maximum comfortable vacuum or -125 mm Hg. Using a warm breastshield effectively warmed the nipple and areola and, combined with maximum comfortable vacuum, decreased the time to remove 80% of the total milk yield and increased the percentage of available milk removed after 5 minutes of expression, with no change in the percentage of available milk removed after 15 minutes of expression compared with an ambient-temperature breastshield. The data confirmed that use of the mother's maximum comfortable vacuum was more efficient than a vacuum of -125 mm Hg. Using a warm breastshield with an electric breast pump was comfortable and improved the efficiency of milk removal.

Spot the red herring: breastfeeding, fruitpurée, and infant autonomic functioning-the generation R study

Several studies have suggested that breastfeeding is related to infant autonomic functioning. The authors investigated whether this is a causal relation. In all, 444 mothers reported breastfeeding practices 2 mo postpartum. Infant autonomic functioning was assessed by heart rate variability at age 14 mo, after discontinuation of breastfeeding. The dose-dependent association between breastfeeding and infant autonomic functioning was tested with linear regression models adjusted for multiple confounders. The authors investigated the relation of fruitpurée consumption with infant autonomic functioning. Fruitpurée consumption has similar socioeconomic epiphenomena but is not related via the same causal mechanism to autonomic regulation as breastfeeding. Nonbreastfed infants had high sympathetic modulation [7.87 log (ms)/SD, 95% CI: 7.71-8.02], partially breastfed infants had intermediate sympathetic modulation [7.75 log (ms)/SD, 95% CI: 7.51-7.82], sympathetic modulation of exclusively breastfed infants was low [7.63 log (ms)/SD, 95% CI: 7.50-7.77]. However, this association could be explained by socioeconomic confounders. Furthermore, fruitpurée consumption was similarly associated with reduced infant sympathetic modulation. The association between breastfeeding practices and infant sympathetic modulation was accounted for by socioeconomic and environmental factors. We found a similar association between fruitpurée consumption and autonomic functioning, further suggesting that the association between breastfeeding and infant autonomic functioning is noncausal.

An exploration of the attitudes and experiences of mothers in the United Kingdom who chose to breastfeed exclusively for 6 months postpartum

BACKGROUND

Levels of exclusive breastfeeding are negligible in the United Kingdom despite World Health Organization recommendations to practice exclusive breastfeeding for the first 6 months postpartum. Although numerous studies have explored the reasons behind low levels of breastfeeding, few have examined the behaviors of women who do breastfeed successfully. However, understanding the influences upon the decision to breastfeed exclusively is important in supporting women to continue breastfeeding.

METHODS

In the current study, 33 women with an infant 6-12 months old who exclusively breastfed for the first 6 months postpartum took part in an interview to explore their motivation and experiences while breastfeeding. The interview explored issues such as sources of support, difficulties, and familial and peer behavior.

RESULTS

Mothers reported high levels of confidence and determination in their decision despite difficulties in reaching their goal and discussed a range of techniques they adopted to overcome issues faced.

CONCLUSIONS

Ingrained and strong beliefs that their choice of feeding method was the normal and healthiest way to feed an infant enabled mothers to overcome problems and continue breastfeeding.

Breastfeeding women's experience of expressing: a descriptive study

There is an increasing trend in Australia and elsewhere for mothers to express breast milk. The purpose of this study was to explore breastfeeding women's experiences of expressing breast milk. An anonymous online questionnaire was sent to Victorian members of the Australian Breastfeeding Association via an e-mail link. Response fraction was 903 of 3024 (29.9%). The most common reason for expressing milk was to "store extra breast milk" (57%, 479/836). The most important reason was "not enough milk"/"to make more milk" (15%, 118/771). The majority of women (65%, 666/843) used an electric breast pump, and this method of expressing was preferred by 59% (454/769) of women. Adverse effects of pumps were pain (17%, 126/737) and damage to nipples (11%, 86/737). Breast pumps may have a role in enabling women to extend the duration of breast milk feeding, but further research is needed.