Immersive Videos Improve Student Self-Efficacy in Clinical Lactation

The current study examined the use of immersive technology as a way to improve access to high-quality interpersonal breastfeeding interactions in an undergraduate clinical lactation course. In particular, we investigated the impact of immersive consultation videos and related activities on student self-efficacy, motivational beliefs, and perceived skill level. Results indicate that usability was high, with participants rating videos, interactives, and activities positively. Students did report a significant increase in self-efficacy and their perceived ability to meet the course learning objectives; no significant changes in the level of interest or perceived skill were found. Our results demonstrate that high-quality immersive videos can be an important learning tool for teaching clinical skills when access to direct patient care is limited or absent.

Perspectives From a Career in Breastfeeding Research, Mentorship, and Advocacy: An Interview With Karen Wambach

Karen Wambach recently retired from a distinguished career in nursing education and breastfeeding research in the United States, practicing her craft during the formative years of the field of lactation consulting. Her research focused on the description of biopsychosocial influences on breastfeeding initiation and duration, as well as interventions for promoting and supporting breastfeeding among vulnerable childbearing populations, for example, adolescent mothers. Her research career trajectory mirrors the development of breastfeeding research more broadly. She began with descriptive studies and theory testing, which included the development of the Breastfeeding Experience Scale quantifying early breastfeeding problems. She then moved on to randomized clinical trials of breastfeeding education/support for adolescent mothers, and finished her funded research using a multi-behavioral, technology-based education and support intervention to promote breastfeeding, healthy lifestyle, and depression prevention in adolescent mothers. As researcher and educator in a clinical science area, she has supported evidence-based practice and translational science through her work as lead editor of many editions of the textbook Breastfeeding and Human Lactation. She is a consummate teacher, having mentored many upcoming researchers during her teaching career, and directed the undergraduate nursing honors program and PhD program at the University of Kansas School of Nursing in the United States. She also believes in serving her profession and has been an active member of American Academy of Nursing, the Midwest Nursing Research Society, the Association of Women's Health, Obstetric, and the Neonatal Nursing and the International Lactation Consultant Association, including serving on JHL's Editorial Review Board for many years. (This conversation was recorded on October 14, 2022 then transcribed and edited for readability. EC = Ellen Chetwynd; KW = Karen Wambach).

Increasing Diversity in the Field of Lactation: An Interview With the Directors of Pathway 2 IBCLC Programs at Historically Black Colleges and Universities

In this issue's Lactation Newsmakers: Documenting our History, we are featuring two emerging leaders in the field of lactation. Rachel Davis and Janiya Williams are both International Board Certified Lactation Consultants and hold positions as directors for the only two Pathway 2 Lactation Consultant Training Programs in Historically Black Colleges / Universities. Rachel is Program Director for the Lactation Consultant Training Program at Johnson C. Smith University in Charlotte, North Carolina, while Janiya directs the Human Lactation Training Program at North Carolina Agricultural and Technical State University an hour and a half away in Greensboro, North Carolina. While their backgrounds are quite different, both women care passionately about increasing diversity and equity in the field of lactation support, as well as normalizing nursing for Black and brown families transitioning into parenthood. In this interview they speak to relationships they have developed with their students, their students have developed with each other, and the strength of community created within and between their programs. They describe the difficulties their students encounter with institutional racism within the medical system, and the additional preparation they receive to navigate it. Both programs experience high volumes of applicants-almost 350 for the 12 positions at Johnson C. Smith University-demonstrating the significant need for this curriculum in Historically Black Universities/Colleges. The importance of this model in diversifying the field of lactation cannot be underestimated, and the outspoken women doing this work will be influencers in this field for years to come. (RD = Rachel Davis; JW = Janiya Williams; EC = Ellen Chetwynd).

Maternity Units in Rural Hospitals in North Carolina: Successful Models for Staffing and Structure

OBJECTIVES

Almost 15% of all US births occur in rural hospitals, yet rural hospitals are closing at an alarming rate because of shortages of delivering clinicians, nurses, and anesthesia support. We describe maternity staffing patterns in successful rural hospitals across North Carolina.

METHODS

All of the hospitals in the state with ≤200 beds and active maternity units were surveyed. Hospitals were categorized into three sizes: critical access hospitals (CAHs) had ≤25 acute staffed hospital beds, small rural hospitals had ≤100 beds without being defined as CAHs, and intermediate rural hospitals had 101 to 200 beds. Qualitative data were collected at a selection of study hospitals during site visits. Eighteen hospitals were surveyed. Site visits were completed at 8 of the surveyed hospitals.

RESULTS

Nurses in CAHs were more likely to float to other units when Labor and Delivery did not have patients and nursing management was more likely to assist on Labor and Delivery when patient census was high. Anesthesia staffing patterns varied but certified nurse anesthetists were highly used. CAHs were almost twice as likely to accept patients choosing a trial of labor after cesarean section (CS) than larger hospitals, but CS rates were similar across all hospital types. Hospitals with only obstetricians as delivering providers had the highest CS rate (32%). The types of hospitals with the lowest CS rates were the hospitals with only family physicians (24%) or high proportions of certified nurse midwives (22%).

CONCLUSIONS

Innovative staffing models, including family physicians, nurse midwives, and nurse anesthetists, are critical for the survival of rural hospitals that provide vital maternity services in underserved areas.

Ankyloglossia Identification, Diagnosis, and Frenotomy : A Qualitative Study of Community Referral Pathways

BACKGROUND

Researchers and practitioners continue to debate the most appropriate assessment, diagnostic, and treatment practices for ankyloglossia (tongue-tie). Health care workers struggle to provide evidence-based care in the absence of consistent standards.

RESEARCH AIM

The aims of this pilot study were to qualitatively (a) evaluate the knowledge of, and attitudes toward tongue-tie and (b) describe how they shaped referral pathways and the establishment of practice patterns of frontline practitioners (pediatric dentists, speech-language pathologists, pediatric chiropractors, and International Board Certified Lactation Consultants).

METHODS

We recruited clinicians (N = 9) using nonprobability purposive sampling. Participants were interviewed using survey schedules adjusted to reflect their specialty area. Semistructured interviews were transcribed and coded using manual and inductive coding techniques common in grounded theory. Themes were iteratively developed using memoing techniques, in which observations and potential concepts were recorded using the aforementioned codes.

RESULTS

Participants were familiar with a variety of protocols and assessment tools, but did not consistently use them. No formal training about the management of tongue-tie was received through their degree programs. Instead they pursued self-guided study. Interprofessional consensus guided opinions about tongue-tie best practices, and referral pathways reflected these consensuses. International Board Certified Lactation Consultants were viewed as pivotal to the care of infants with tongue-tie while primary care physicians-primarily pediatricians-were omitted from referral pathways.

CONCLUSION

Lack of formalized training, professional consensus about best practices, and insufficient resources for assessing and treating tongue-tie led participants to incomplete referral pathways and personal interpretations of the data through the lens of anecdotal evidence.

The Lactational Effects of Contraceptive Hormones: an Evaluation (LECHE) Study

OBJECTIVE

To estimate the proportion of women for whom use of hormonal contraception was associated with reporting a decreased breast milk supply.

STUDY DESIGN

The Lactational Effects of Contraceptive Hormones: an Evaluation ("LECHE") Study was an anonymous, internet-based, exploratory, cross-sectional survey of postpartum women using approximately 70 questions. Women were eligible to participate in the survey if they were 18 years or older, had a singleton infant between 3 and 9 months of age, had breastfed this infant for any amount of time and could read English. The survey included questions about breastfeeding, reproductive health, demographic characteristics and the timing of postpartum events.

RESULTS

A total of 3971 participants clicked on the survey. Our final study population included 2922 participants. Overall, 1201 (41%) reported having had milk supply concerns at some point in the first 12 weeks postpartum. The median time from birth until milk supply concerns was 3 weeks (IQR 1-7). Eight hundred fifty-two women (29%) started hormonal contraception in the first 12 weeks postpartum. Fifteen percent (127/852) of women reported new or additional milk supply concerns after starting hormonal contraception. Reported milk supply concerns were higher for women who used hormonal contraception than those who did not (44% vs. 40%; p=.05) Adjusted hazard ratios (HRs) assessing the association between contraceptive use and time to milk supply concerns were not statistically significant (HR 1.18, 95% confidence interval 0.94-1.47 for any type of hormonal contraception).

CONCLUSIONS

This study found a slightly increased proportion of reported milk supply concerns among women who started hormonal contraception.

IMPLICATIONS

It is important for caregivers in the postpartum period to recognize the potential for multiple factors, including initiation of hormonal contraception, to affect breastfeeding. Patient-centered counseling can help elicit women's values and preferences regarding breastfeeding and pregnancy prevention.

A Geospatial Analysis of the Impact of the Baby-Friendly Hospital Initiative on Breastfeeding Initiation in North Carolina

BACKGROUND:

Significant disparities in breastfeeding support and practice exist in North Carolina. The Baby-Friendly Hospital Initiative is a worldwide intervention that encourages birth facilities to adopt specific practices in support of breastfeeding.

RESEARCH AIM:

This study aimed to evaluate the impact of the Baby-Friendly Hospital Initiative on breastfeeding initiation in North Carolina, with special attention to rural areas.

METHODS:

To better understand disparities in breastfeeding initiation across North Carolina, we conducted a secondary analysis of birth certificate data from 2011 to 2014. Univariate and multivariate logistic regression models were used to estimate the association between breastfeeding initiation and (a) birth at a Baby-Friendly hospital and (b) maternal residence in a county with a Baby-Friendly hospital. Model residuals were aggregated by county and analyzed for spatial autocorrelation.

RESULTS:

Birth at a Baby-Friendly hospital was associated with increased odds of breastfeeding initiation, adjusted odds ratio = 1.7, 95% confidence interval [1.65, 1.89]. Model residuals showed significant clustering by county, with some rural areas' rates systematically overestimated. Whereas presence of a Baby-Friendly hospital in a mother's community of residence was not associated with increased initiation, birth at a Baby-Friendly hospital was associated with smaller disparities in initiation between rural and urban births.

CONCLUSION:

Birth at a Baby-Friendly hospital is associated with improved breastfeeding initiation and reduced disparities in initiation between rural and urban counties in North Carolina.

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.

Improving Access to Medical Lactation Support and Counseling: Building the Case for Medicaid Reimbursement

Objective While the Affordable Care Act improves access to lactation services for many women across the US, low-income mothers in states without Medicaid expansion lack coverage for lactation support. As these states consider individual Medicaid reimbursement policies, the availability, effectiveness, and cost-benefit of lactation services must be evaluated. We conducted such an analysis for low-income mothers in North Carolina (NC), providing a model for other states. Methods First, we analyzed the distribution of NC International Board Certified Lactation Consultants (IBCLCs) and county-level breastfeeding rates among low-income infants. Logistic regression was used to examine the association between IBCLC density and 6-week breastfeeding duration. Finally, state advocates collaborated on a cost-benefit analysis of Medicaid coverage of IBCLCs. Results Maps of the NC breastfeeding support landscape indicate that IBCLCs are available to provide services to low-income women across the state. Compared to counties with no IBCLCs, those with high IBCLC density were found to have a 6-week breastfeeding prevalence ratio of 1.20 (95 % CI 1.12, 1.28). Medicaid reimbursement of IBCLCs showed an estimated annual cost savings of $2.33 million. Conclusions for Practice In one state without Medicaid expansion, we found that breastfeeding support resources are available across the state, high density IBCLC support is associated with increased breastfeeding by low-income mothers, and services are cost-effective. Our model for Medicaid reimbursement in NC provides a framework for states to improve equity in access to optimal lactation support.

Stakeholder views of breastfeeding education in schools: a systematic mixed studies review of the literature

BACKGROUND

Breastfeeding provides numerous health benefits for mothers and infants, but worldwide breastfeeding rates fall below recommendations. As part of efforts to increase breastfeeding initiation and duration, the World Health Organization and UNICEF UK recommend educational interventions to increase awareness and positive attitudes towards breastfeeding beginning during the school years. Breastfeeding education in the school setting offers the opportunity to improve the knowledge base, address misconceptions, and positively influence beliefs and attitudes for students from a wide range of socioeconomic and cultural backgrounds. The purpose of this paper is to present a comprehensive narrative review of the literature regarding student and teacher (stakeholder) views of breastfeeding and breastfeeding education programs in schools to inform future research in the area.

METHODS

Articles were located through a systematic search of online databases and journals using the following keywords in various combinations: (1) breastfeeding, lactation, breast-feeding, "bottle feeding", "infant feeding" (2) student, educator, teacher, "school administrator" and (3) schools, "secondary education", "primary education", "K-12", "high school", "middle school", "elementary school", education, adolescents, curriculum, and a manual search of article references. Studies were screened for inclusion against specific criteria and included papers were assessed using the Mixed Methods Appraisal Tool (MMAT).

RESULTS

This review suggests that adolescents have a deficit in breastfeeding knowledge and express negative conceptions about breastfeeding. Breastfeeding is being discussed in some school environments, but the extent of lessons and the specific messages that teachers communicate have not been explored. Students appear to be interested in receiving more information about breastfeeding, especially if delivered by health professionals or breastfeeding mothers. The majority of teachers are supportive of incorporating breastfeeding education in family and consumer sciences, sexual education, and health classes; however, time constraints and limited knowledge of infant feeding recommendations may be barriers to implementation of appropriate lesson plans.

CONCLUSIONS

Students generally support and are receptive to breastfeeding education; however, research on educator attitudes, knowledge, and experiences are necessary for appropriate implementation of breastfeeding education in varying school settings around the world.

Gene expression in breastmilk cells is associated with maternal and infant characteristics

Breastmilk is a rich source of cells with a heterogeneous composition comprising early-stage stem cells, progenitors and more differentiated cells. The gene expression profiles of these cells and their associations with characteristics of the breastfeeding mother and infant are poorly understood. This study investigated factors associated with the cellular dynamics of breastmilk and explored variations amongst women. Genes representing different breastmilk cell populations including mammary epithelial and myoepithelial cells, progenitors, and multi-lineage stem cells showed great variation in expression. Stem cell markers ESRRB and CK5, myoepithelial marker CK14, and lactocyte marker α-lactalbumin were amongst the genes most highly expressed across all samples tested. Genes exerting similar functions, such as either stem cell regulation or milk production, were found to be closely associated. Infant gestational age at delivery and changes in maternal bra cup size between pre-pregnancy and postpartum lactation were associated with expression of genes controlling stemness as well as milk synthesis. Additional correlations were found between genes and dyad characteristics, which may explain abnormalities related to low breastmilk supply or preterm birth. Our findings highlight the heterogeneity of breastmilk cell content and its changes associated with characteristics of the breastfeeding dyad that may reflect changing infant needs.

A pilot study on the protein composition of induced nonpuerperal human milk

BACKGROUND

Our understanding of the components of human puerperal milk is extensive and increasing, yet the literature on nonpuerperal human milk has been limited to studies that measure the success of induced lactation.

OBJECTIVE

This study aimed to describe the composition of total protein and key bioactive proteins when lactation is induced in nonpuerperal women.

METHODS

Two women who induced lactation in the absence of pregnancy provided weekly milk samples over a 2-month period for analysis of total protein, secretory immunoglobulin A (sIgA), lysozyme, and lactoferrin. Composition was compared to the mature milk of 3 puerperal control subjects who were 11 months postpartum.

RESULTS

Median total protein for subject A was 2.30 g/dL (interquartile range [IQR] = 0.46) and showed a significant downward trend over time (P < .0001), whereas the median total protein for subject B was 2.21 g/dL (IQR = 0.18) and showed a nonsignificant decline (P = .232). Total protein in both nonpuerperal subjects was elevated compared to control subjects. Secretory IgA activity declined for both nonpuerperal subjects over time, whereas lysozyme concentrations increased over time. Both sIgA and lysozyme approached the levels seen in the puerperal controls. Lactoferrin levels remained stable for both nonpuerperal subjects and were elevated compared to puerperal milk samples.

CONCLUSION

This pilot study suggests that nonpuerperal milk has similar or higher levels of total protein, sIgA, lactoferrin, and lysozyme compared to puerperal, mature milk at 11 months postpartum, which warrants more attention as adoptive mothers increasingly choose to induce lactation.

The intricacies of induced lactation for same-sex mothers of an adopted child

The definition of a modern family is changing. In this case study, we describe the breastfeeding experience of a child receiving human milk from all 3 of his mothers: his 2 adoptive mothers, who induced lactation to nurse him, and his birth mother, who shared in his early feeding during the open adoption process and continued to pump and send milk to him for several months. We review the lactation protocol used by his adoptive mothers and the unique difficulties inherent in this multi-mother family dynamic. Both adoptive mothers successfully induced moderate milk production using a combination of hormonal birth control, domperidone, herbal supplements, and a schedule of breast pumping. However, because of the increased complexity of the immediate postpartum period and concerns with defining parental roles in a same-sex marriage, maintenance of milk production was difficult.

Temporal trends in the inflammatory cytokine profile of human breastmilk

A longer lifetime duration of breastfeeding may decrease the risk of breast cancer by reducing breast inflammation and mitigating inflammatory cytokine expression during postlactational involution. However, little is known about how the inflammatory cytokine profile in human breastmilk changes over time. To study temporal trends in breastmilk cytokine expression, we measured 80 human cytokines in the whey fraction of breastmilk samples from 15 mothers at 1, 4, 8, and 12 weeks postpartum. We used mixed models to identify temporal changes in cytokine expression and investigated parity status (multiparous vs. primiparous) as a potential confounder. Nine cytokines (monocyte chemoattractant protein-1, epithelial-derived neutrophil-activating protein-78, hepatocyte growth factor, insulin-like growth factor-binding protein-1, interleukin-16, interleukin-8, macrophage colony-stimulating factor, osteoprotegerin, and tissue inhibitor of metallopeptidase-2) had significantly decreased expression with increasing breastfeeding duration; all nine have known roles in breast involution, inflammation, and cancer and may serve as biomarkers of changing breast microenvironment. No cytokine significantly increased in level over the study period. Total protein concentration significantly decreased over time (p<0.0001), which may mediate the association between length of breastfeeding and inflammatory cytokine expression. Parity status did not confound temporal trends, but levels of several cytokines were significantly higher among multiparous versus primiparous women. Our results suggest that inflammatory cytokine expression during lactation is dynamic, and expressed milk may provide a noninvasive window into the extensive biological changes that occur in the postpartum breast.

Prevalence and risk factors for early, undesired weaning attributed to lactation dysfunction

BACKGROUND

Breastfeeding durations in the United States fall short of public health objectives. We sought to quantify the prevalence and identify risk factors for early, undesired weaning that mothers attribute to physiologic difficulties with breastfeeding.

METHODS

We analyzed data from the Infant Feeding Practices Study (IFPS) II, a longitudinal study of US women. We defined disrupted lactation as early, undesired weaning attributed to at least two of the following three problems: breast pain, low milk supply, and difficulty with infant latch. We used logistic regression to estimate the association maternal body mass index (BMI), postpartum depressive symptoms, and disrupted lactation.

RESULTS

Of 4,902 women enrolled in the IFPS II, we analyzed 2,335 women who reported prenatal intention and breastfeeding initiation. The prevalence of disrupted lactation was 12 per 100 women (95% confidence interval [CI] 11, 13) during the first year of life. Women in this group weaned earlier (median 1.2 months, interquartile range [IQR] 0.5-2.8) than women without disrupted lactation (median 7.0 months, IQR 2.8-2.0, p<0.01). In multivariable-adjusted (MV-adj.) models, we found increased odds of disrupted lactation among overweight (odds ratio [OR] 1.6, 95% CI 1.1-2.3) or obese (OR 1.7, 95% CI 1.2-2.6) women, compared with women with a normal pregravid BMI. Maternal depressive symptoms at 2 months, defined as Edinburgh Postnatal Depression Scale ≥13, were also associated with disrupted lactation (MV-adj. OR 1.7, 95% CI 1.1-2.7).

CONCLUSION

In a longitudinal sample of US women, disrupted lactation affected one in eight mothers who initiated breastfeeding. These findings underscore the need for both improved early breastfeeding support and targeted research to define the underlying pathophysiology and to determine management strategies that will enable more mothers to achieve their breastfeeding goals.

Recognition of International Board Certified Lactation Consultants by health insurance providers in the United States: results of a national survey of lactation consultants

BACKGROUND

Insurance coverage for lactation management is proposed by the United States Affordable Care Act. International Board Certified Lactation Consultants (IBCLCs) are key providers of lactation services. In order to inform national discussion, this study examines the scope of insurance reimbursement of IBCLC services.

OBJECTIVES

An email survey of US IBCLCs (N = 10 495) in March 2011 was used to explore frequencies of (1) submission--how often lactation consults were submitted to insurance providers for reimbursement and (2) recognition--the proportion of submitted charges recognized by insurance providers.

METHODS

Results (N = 2045) were analyzed to describe patterns of submission and recognition by IBCLC work setting, job classification, and reimbursement strategy.

RESULTS

Many survey respondents did not know their submission (41%) or recognition (57%) levels. Multiple strategies were used for reimbursement of IBCLC services with large variations in recognition between strategies. Overall, less than 15% reported high levels of submissions to insurance providers. Moreover, of submitted encounters, only 4% were consistently recognized by insurance providers. Inpatient hospital IBCLCs were least likely to have consults recognized (3%), and private community IBCLCs were most frequently recognized (32%). Compared with using IBCLC credentials for submitting an encounter, using another clinical license was the most successful strategy for achieving recognition of IBCLC consults (crude risk ratio, 1.44; 95% confidence interval, 1.04-2.01; P = .02).

CONCLUSION

IBCLCs provide key care to a vulnerable population. However, we found that these services are not consistently reimbursed. IBCLCs poorly communicate their health care activities to insurance providers, but insurance providers also inconsistently recognize and reimburse IBCLC care.

Breastmilk is a novel source of stem cells with multilineage differentiation potential

The mammary gland undergoes significant remodeling during pregnancy and lactation, which is fuelled by controlled mammary stem cell (MaSC) proliferation. The scarcity of human lactating breast tissue specimens and the low numbers and quiescent state of MaSCs in the resting breast have hindered understanding of both normal MaSC dynamics and the molecular determinants that drive their aberrant self-renewal in breast cancer. Here, we demonstrate that human breastmilk contains stem cells (hBSCs) with multilineage properties. Breastmilk cells from different donors displayed variable expression of pluripotency genes normally found in human embryonic stem cells (hESCs). These genes included the transcription factors (TFs) OCT4, SOX2, NANOG, known to constitute the core self-renewal circuitry of hESCs. When cultured in the presence of mouse embryonic feeder fibroblasts, a population of hBSCs exhibited an encapsulated ESC-like colony morphology and phenotype and could be passaged in secondary and tertiary clonogenic cultures. While self-renewal TFs were found silenced in the normal resting epithelium, they were dramatically upregulated in breastmilk cells cultured in 3D spheroid conditions. Furthermore, hBSCs differentiated in vitro into cell lineages from all three germ layers. These findings provide evidence that breastmilk represents a novel and noninvasive source of patient-specific stem cells with multilineage potential and establish a method for expansion of these cells in culture. They also highlight the potential of these cells to be used as novel models to understand adult stem cell plasticity and breast cancer, with potential use in bioengineering and tissue regeneration.