Journal of Human Lactation

The UNICEF/WHO Baby-Friendly Hospital Initiative suggests that breastfeeding activities in hospital are important to later breastfeeding. Understanding reasons for in-hospital supplementation may help to optimize the successful implementation of this initiative. The objective was to identify predictors of in-hospital initial formula supplementation of healthy, breastfeeding newborns. The authors analyzed 564 Canadian mother-infant pairs and interviewed nurses. Half of the study infants (47.9%) received formula in hospital; the median age at first supplementation was 8.4 hours. Risk for supplementation was affected by birth occurring between 7 PM and 9 AM (hazard ratio [HR] varied with time) and high maternal trait anxiety (HR = 1.61, 95% confidence interval [CI] = 1.01, 2.59). The following variables were protective against supplementation: planning to exclusively breastfeed (HR = 0.46, 95% CI = 0.33, 0.64), planning to breastfeed for ≥ 3 months (HR = 0.56, 95% CI = 0.37-0.86), childbirth education (HR = 0.61, 95% CI = 0.43, 0.86), mother born in Canada (HR = 0.68, 95% CI = 0.53, 0.87), completion of community college (HR = 0.76, 95% CI = 0.59, 0.98), male infant (HR = 0.78, 95% CI = 0.61, 0.99), and breastfeeding at delivery (HR varied with time). Nurses reported breastfeeding problems, infant behavior, and maternal fatigue as reasons for supplementing. Reassessing patterns of night feeds and encouraging breastfeeding at delivery may decrease supplementation. Trait anxiety reduction and the role of infant gender in supplementation merit further study.

The authors tested indicators of effective breastfeeding to identify those that provide reliable estimates of human milk intake. Human milk intake of 82 full-term infants was measured by test weights before and after feeding and compared with commonly used breastfeeding indicators: rooting, length of time before latch-on, latch-on, suckle, observable swallowing, and audible swallowing. Two models were tested: model 1, describing indicators at 96 hours postpartum, and model 2, describing indicators at > 96 hours postpartum. Median (interquartile) milliliters of mother’s milk consumed per feeding was 26 ml (range, 4-47) at 96 hours and 54 ml (range, 26-73) at > 96 hours. Significant predictors of human milk intake in model 1 were rooting and observable swallowing (R ² = 26%, P < .01). In model 2, audible swallowing alone estimated human milk intake (R ² = 29%, P < .001). Observed swallowing and rooting during the first 4 days (96 hours) following birth and audible swallowing after that time should be included in the breastfeeding assessment of full-term infants.

Rates of breastfeeding are increasing, but the methods by which human milk is fed to infants is not well described. Using a retrospective survey design, the authors collected information about infant feeding from mothers of term, preterm, singleton, and multiple-gestation infants (n = 346). Human milk feeding methods were characterized as solely at the breast, pumped only, or a combination. Sixty-eight percent of mothers in the study fed their infants at least some human milk; 77% of these mothers reported pumping milk. There was no difference in the percentage of pumping based on multiple gestation or length of pregnancy. Feeding human milk solely at the breast at early postpartum time points was associated with longer durations of human milk feeding overall. More research is needed to better understand why mothers choose pumping over direct human milk feedings and to evaluate the health outcomes associated with this practice. J Hum Lact. 21(4):413-420.

This study aimed to use ultrasound imaging to investigate the milk ejection characteristics of women during a 10-minute expression using an electric breast pump capable of applying 2 markedly different vacuum patterns. The classic pattern (47 cycles/min) and 3-phase pattern (pre-milk ejection: 120 cycles/min, post-milk ejection: 20 cycles/min for 2 minutes post-milk ejection then 55-78 cycles/min for 8 minutes) were tested, and the milk expressed was collected in 30-second intervals. Multiple milk ejections (96%) were detected (classic: 3.27 ± 2.05; 3-phase: 3.72 ± 1.19) and associated with increases in milk flow. Almost half of the total volume of milk expressed was removed during the first milk ejection (classic: 41.38 ± 21.48%; 3-phase: 46.72 ± 26.60%). There was no correlation between the number of milk ejections and both the total volume of milk and percentage of available milk for either pattern. In conclusion, milk ejection characteristics and efficiency of milk expression did not change in response to different expression patterns.

Strategies promoting initiation and successful continuation of breastfeeding are important in facilitating the breastfeeding experience. However, unique difficulties with breastfeeding may occur that necessitate specific interventions, to prevent early weaning and promote satisfaction with the breastfeeding experience. Special devices have been recommended and used to help women overcome various breastfeeding problems. A supplemental feeding tube device (SFTD) is a device that permits supplemental nourishment for infants while still preserving the breastfeeding goals of the mother. The purpose of this naturalistic study was to describe the experiences of breastfeeding mothers who used SFTDs to establish, reestablish, or supplement infant feeding at the breast. From the findings, 3 groups of themes emerged: seeking a solution, managing the challenges, and forming opinions. The underlying theme identified by all of the participants in the study was “finding an alternative.” Women found the SFTD to be an acceptable alternative that facilitated their breastfeeding experience.

This study compared concentrations of total protein, lysozyme, and immunoglobulins (IgA, IgG, IgM) in samples of colostrum (n = 101) obtained from mothers of infants < 32 weeks, 32 to 36⁶ 7 weeks, and ≥ 37 weeks gestational age, both before and after pasteurization. Total protein was measured by refraction index, lysozyme by the lysoplate method, and immunoglobulins through the radial immunodiffusion technique. The total protein concentration was greater in colostrum of the < 32 weeks and 32 to 36⁶ 7 weeks categories compared to full-term (P < .001), while concentrations of lysozyme and IgM were similar. IgA concentrations were higher in the < 32 weeks group compared to the full-term and similar to the 32 to 36⁶ 7 weeks group (P < .05). The IgG was higher in the < 32 weeks category compared to 32 to 36⁶ 7 weeks, and both were similar to the full-term (P < .05). Pasteurization significantly decreased all of the factors analyzed.

Despite important health benefits, the presence of depressive symptoms may decrease the prevalence of breastfeeding. The current study assessed the relationship between depressive symptoms and breastfeeding at 6 and 12 weeks postpartum. Participants were recruited from a cohort completing a clinical trial of calcium for prevention of preeclampsia. At 6 weeks postpartum, the Edinburgh Postnatal Depression Scale (EPDS) was completed by mail. At 12 weeks postpartum, the EPDS was completed at an outpatient visit. There was an inverse relationship between depressive symptoms and breastfeeding at 6 weeks postpartum (P < .001) but not at 12 weeks. This relationship persisted even after controlling for prior history of depression, increased life stress, and current psychoactive medication. The results suggest that depressive symptoms early in the postpartum period may lower the prevalence of breastfeeding.

Medical school and residency training programs, in which practice patterns are established, frequently lack formal education in breastfeeding in the United States. This project, a curriculum based on the Wellstart Lactation Management Guide, was developed for resident physicians and medical students at the University of New Mexico to address the deficiency in formal education about breastfeeding. The curriculum, developed and implemented by faculty members from obstetrics/gynecology, pediatrics, and family medicine, includes formal interactive teaching sessions, discussion of breastfeeding issues on daily clinical rounds, and patient visits with lactation support personnel. Interns from the Departments of Pediatrics, Obstetrics/Gynecology, and Family Medicine participate. Surveys of participating residents and faculty demonstrate highly favorable attitudes. In conclusion, a multidisciplinary approach to breastfeeding education is feasible and well received by both teachers and residents. J Hum Lact. 21(4):458-464.