Bed-sharing in the absence of hazardous circumstances: is there a risk of sudden infant death syndrome? An analysis from two case-control studies conducted in the UK

Maternal depressive symptoms and mother-infant cosleeping (including room sharing and bedsharing): a systematic review

STUDY OBJECTIVES

Maternal depressive symptoms (MDS) affect most women during the first year postpartum. Mothers provide most of the nighttime care for infants, so studying the relationship between MDS and infant sleep location (ISL) is highly relevant to understanding maternal mental health over the first year of life and beyond. Infant sleep is studied by anthropologists, health care providers, and psychologists, with very little communication across disciplines. This review aimed to determine whether there is a predictive relationship between MDS and ISL.

METHODS

This systematic review searched 6 databases with terms related to maternal mood and ISL. Final analysis included 14 published studies, analyzed with narrative synthesis and Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Included studies directly compared ISL and MDS.

RESULTS

Five studies showed no relationship between ISL and MDS, and 1 study found bedsharing reduced MDS. Five studies found cosleeping was related to higher MDS although directionality is mixed or missing, and 3 studies found an association at some ages or for some populations only. Examining studies according to type of infant sleep assessment, study design, age of infant, or breastfeeding status failed to detect consistent patterns.

CONCLUSIONS

A variety of study designs, types and definitions of variable measures, sample recruitment, and study outcomes prevent detection of a consistent relationship between MDS and ISL. We explore reasons for the elusive nature of a relationship and make recommendations for future research in MDS and ISL, including crossdisciplinary collaborations.

CITATION

Barry ES, D'Souza L. Maternal depressive symptoms and mother-infant cosleeping (including room sharing and bedsharing): a systematic review. J Clin Sleep Med. 2024;20(9):1517-1533.

Bedsharing among breastfeeding physicians: Results of a nationwide survey

INTRODUCTION

Bedsharing is common but advised against by the American Academy of Pediatrics. It is unknown if breastfeeding physicians bedshare more or less than the general population.

OBJECTIVES

To determine the prevalence of bedsharing among physicians, their reasons for bedsharing or not, and whether bedsharing was associated with a longer duration of breastfeeding.

METHODS

An online survey was adapted from surveys administered by the Centers for Disease Control and Prevention. The survey was administered to physicians and medical students who birthed children from October 2020 through August 2021. Respondents were asked to report on a singleton birth, and questions centered around sleep practices and breastfeeding. Survival analysis was used to examine the association between bedsharing and breastfeeding duration.

RESULTS

Of 546 respondents with bedsharing data, 68% reported some history of bedsharing, and 77% were in specialties that involved caring for pregnant people and/or infants. Those who bedshared breastfed an average of four months longer than those who never bedshared (18.08 versus 14.08 months p<0.001). The adjusted risk of breastfeeding cessation was markedly lower for those who bedshared compared to those who did not (Hazard Ratio 0.57, 95% Confidence Interval 0.45, 0.71). The primary reason for bedsharing was to breastfeed (73%); the primary reason for not bedsharing was safety concerns (92%). Among those who bedshared (n = 373), 52% did not inform their child's healthcare provider.

CONCLUSIONS

Bedsharing is common among our sample of mainly breastfeeding physicians, including those who care for pregnant people and/or infants. It is also associated with a longer duration of breastfeeding, which has implications for population health. Practicing bedsharing implies cognitive dissidence and may affect how physicians counsel about bedsharing. Additionally, lack of disclosure of bedsharing practices has implications for practical guidance about having open non-judgmental conversations and may be a missed opportunity to counsel on bedsharing safety.

The Role of Family Physicians in Children's Sleep

Sleep holds significant importance for maintaining health and aiding in illness recovery. Its deprivation impacts all human organ systems, from cognitive function, social interaction, and work capacity to cellular regeneration and immune function. Therefore, sleep plays a crucial role in our body and maintaining health and well-being. Given its importance and close relationship with the neurodevelopment and growth of children and adolescents, this topic is highly significant in pediatric and adolescent health consultations. Family physicians, due to their proximity and understanding of the individual within their family, have the prerogative to contribute to family literacy, empower them, and significantly enhance the quality of life and overall health.

Sources of attitudes towards parent-child co-sleeping and their effects: A systematic scoping review

Parent-child co-sleeping is a common practice in many cultures, although in Western countries, families who engage in parent-child co-sleeping can encounter attitudes about co-sleeping that feel critical from the people around them, as it is not commonly accepted and often stigmatized. This systematic scoping review examined and synthesized the available literature on the attitudes about parent-child co-sleeping that people encounter, their origins, and their effect on parents' own attitudes and behaviors. A total of 9796 abstracts were screened, and 33 studies were included. While the scope of the literature on this topic was narrow, this review demonstrated that parents/caregivers mostly encounter encouraging attitudes about co-sleeping from their extended family members and within their culture and discouraging attitudes from healthcare professionals. Findings suggest that encouraging attitudes enhance the likelihood of parents engaging and continuing with co-sleeping behavior, while discouraging attitudes can lead to the avoidance of parents discussing sleep with their healthcare professionals and can cause conflicts with other family members, including partners. Based on these findings, we conclude that further research is needed in several areas related to co-sleeping in Western culture, most specifically in how external attitudes influence the decision to co-sleep, as well as other behaviors and cognitions such as engagement with healthcare professionals, family satisfaction, parental self-efficacy, and overall mental health.

Death from Failed Protection? An Evolutionary-Developmental Theory of Sudden Infant Death Syndrome

Sudden infant death syndrome (SIDS) has been mainly described from a risk perspective, with a focus on endogenous, exogenous, and temporal risk factors that can interact to facilitate lethal outcomes. Here we discuss the limitations that this risk-based paradigm may have, using two of the major risk factors for SIDS, prone sleep position and bed-sharing, as examples. Based on a multipronged theoretical model encompassing evolutionary theory, developmental biology, and cultural mismatch theory, we conceptualize the vulnerability to SIDS as an imbalance between current physiologic-regulatory demands and current protective abilities on the part of the infant. From this understanding, SIDS appears as a developmental condition in which competencies relevant to self-protection fail to develop appropriately in the future victims. Since all of the protective resources in question are bound to emerge during normal infant development, we contend that SIDS may reflect an evolutionary mismatch situation-a constellation in which certain modern developmental influences may overextend the child's adaptive (evolutionary) repertoire. We thus argue that SIDS may be better understood if the focus on risk factors is complemented by a deeper appreciation of the protective resources that human infants acquire during their normal development. We extensively analyze this evolutionary-developmental theory against the body of epidemiological and experimental evidence in SIDS research and thereby also address the as-of-yet unresolved question of why breastfeeding may be protective against SIDS.

Practices and Awareness Regarding an Infant's Sleep Environment among Japanese Caregivers: A Cross-Sectional Survey

Preventing sudden, unexpected infant death related to sleep, especially suffocation and sudden infant death syndrome, remains challenging globally. To evaluate factors associated with an unsafe sleep environment (SE) for infants in Japan, this cross-sectional study investigated the current status of practices and awareness among caregivers about a safe SE. Two hundred and fifty-four caregivers of infants in Yamaguchi Prefecture participated. Among the caregivers, 96.0% could not thoroughly practice a safe SE, although 65.0% had knowledge about a safe SE. More unsafe SE practices were significantly associated with 8- to 11-month-old infants than with 0- to 3-month-old infants, using the same practice as for an older child than with accessing information or a familiar person than with mass media as the most useful source of information. The differences in having knowledge were not associated with their practice. Many caregivers obtained information about an infant's SE from mass media and a familiar person. They preferred education via a face-to-face method by medical experts to raise awareness about a safe SE. Thus, efforts need to be developed in Japan in which experts who directly attend to caregivers can truly educate them to ensure that caregivers are continuously aware of the importance of an SE.

Construction of the Views oN Infant Sleep (VNIS) Questionnaire

Parents' beliefs about infant sleep behaviour vary over time and across cultures. No validated instrument exists to understand parents' pre- and postnatal views on infant sleep behaviours, which may influence their caregiving decisions. The Views oN Infant Sleep Questionnaire (VNIS) will be a tool to assess parents' beliefs in order to facilitate tailored perinatal care, increase the reliability of postnatal self-report measures, allow for cross-cultural comparisons, and provide a baseline for researchers to use in longitudinal studies. We recruited an online sample of 971 female participants who were resident in the United Kingdom, at least 28 weeks pregnant, and at least 18 years of age. The initial questionnaire consisted of 31 questions about infant independence, night-waking, infant feeding, touch, and safety, and items were rated on a 5-point Likert scale. The item pool was reduced to 12 using principal component analysis and a structure was found for the three components "Closeness", "Independence", and "Night-waking". Overall, these results suggest that the VNIS can provide a brief scale to measure different aspects of individuals' beliefs about infant sleep. In further research the VNIS needs to be validated with a confirmatory factor analysis in another sample, and to be tested as a cross-cultural instrument.

Characteristics of Sudden Unexpected Infant Deaths on Shared and Nonshared Sleep Surfaces

OBJECTIVES

Describe characteristics of sudden unexpected infant deaths (SUID) occurring on shared or nonshared sleep surfaces.

METHODS

We examined SUID among residents of 23 US jurisdictions who died during 2011 to 2020. We calculated frequencies and percentages of demographic, sleep environment, and other characteristics by sleep surface sharing status and reported differences of at least 5% between surface sharing and nonsharing infants.

RESULTS

Of 7595 SUID cases, 59.5% were sleep surface sharing when they died. Compared with nonsharing infants, sharing infants were more often aged 0 to 3 months, non-Hispanic Black, publicly insured, found supine, found in an adult bed or chair/couch, had a higher number of unsafe sleep factors present, were exposed to maternal cigarette smoking prenatally, were supervised by a parent at the time of death, or had a supervisor who was impaired by drugs or alcohol at the time of death. At least 76% of all SUID had multiple unsafe sleep factors present. Among surface-sharing SUID, most were sharing with adults only (68.2%), in an adult bed (75.9%), and with 1 other person (51.6%). Surface sharing was more common among multiples than singletons.

CONCLUSIONS

Among SUID, surface sharing and nonsharing infants varied by age at death, race and ethnicity, insurance type, presence of unsafe sleep factors, prenatal smoke exposure, and supervisor impairment. Most SUID, regardless of sleep location, had multiple unsafe sleep factors present, demonstrating the need for comprehensive safe sleep counseling for every family at every encounter.

Infant death from accidental suffocation and strangulation in bed in England and Wales: rare or unrecognised events?

BACKGROUND

Mandatory joint police and healthcare investigations of sudden unexpected death in infancy (SUDI) have been in place since 2008 in England. These include death scene examination with cause of death determined at multiprofessional case conference. Detailed evidence on sleep arrangements is available for most cases potentially leading to more being identified as due to accidental suffocation. SUDI remaining unexplained following investigation are classified as SIDS (sudden infant death syndrome) or unspecified deaths.Our objective was to determine whether detailed SUDI investigation has led to an increase in deaths classified as accidental suffocation or strangulation in bed (ASSB)?

METHODS

We obtained official mortality data for England and Wales for infants dying aged 0-364 days for International Statistical Classification of Diseases and Related Health Problems, 10th revision codes R95 (SIDS), R96, R98, R99 (unspecified causes of mortality) and W75 (ASSB) for the years 2000-2019.We calculated the mortality rate for ASSB, SIDS and unspecified causes based on total live births each year.

RESULTS

Unexplained SUDI decreased from 353 in 2000 to 175 in 2019, with the mortality rate falling from 0.58 to 0.29 per 1000 live births. The total postneonatal mortality rate fell during this time from 1.9 to 0.9 per 1000 live births suggesting this is a genuine fall. SIDS accounted for 70% of unexplained SUDI in 2000 falling to 49% in 2020 with a corresponding increase in R99 unspecified deaths.Few deaths were recorded as ASSB (W75), ranging between 4 in 2010 and 24 in 2001. The rate for ASSB ranged from 0.6 to 4.0 per 100000 live births.

CONCLUSIONS

There is a shift away from SIDS (R95) towards unspecified causes of death (R96, R98, R99). Improved investigation of deaths has not led to increased numbers of death identified as due to ASSB. There needs to be clear guidelines on accurate classification of deaths from ASSB to facilitate learning from deaths and inform prevention efforts.

A study of Samoan, Tongan, Cook Island Māori, and Niuean infant care practices in the Growing Up in New Zealand study

BACKGROUND

Despite a low rate of infant mortality, Aotearoa New Zealand has a high rate of Sudden Unexpected Death in Infants (SUDI), with disproportionate impact for Pacific infants. This study explored the infant care practices, factors and relationships associated with increased risk of SUDI amongst Tongan, Samoan, Cook Islands Māori, and Niuean mothers in New Zealand, to inform evidence-based interventions for reducing the incidence of SUDI for Pacific families and their children.

METHODS

Analysis comprised of data collected in 2009-2010 from 1089 Samoan, Tongan, Cook Islands Māori and Niuean mothers enrolled in the Growing Up in New Zealand longitudinal cohort study. The sleeping environment (bed-sharing and sleep position) of the infants was assessed at 6 weeks. Multivariable logistic regression analysis were conducted, controlling for sociodemographic factors to explore the association between selected maternal and pregnancy support and environment factors and the sleeping environment for infants.

RESULTS

Mothers who converse in languages other than English at home, and mothers who consulted alternative practitioners were less likely to follow guidelines for infant sleeping position. Similarly language, smoking, alcohol, household dwelling, crowding and access to a family doctor or GP were associated with mothers following guidelines for bed-sharing.

CONCLUSION

The impact of SUDI on Pacific infants may be lessened or prevented if communication about risk factors is more inclusive of diverse ethnic, cultural worldviews, and languages. Societal structural issues such as access to affordable housing is also important. This research suggests a need for more targeted or tailored interventions which promote safe sleeping and reduce rates of SUDI in a culturally respectful and meaningful way for Pasifika communities in Aotearoa, New Zealand.

Changes in background characteristics and risk factors among SIDS infants in England: cohort comparisons from 1993 to 2020

OBJECTIVES

Using the National Child Mortality Database, this work aims to investigate background characteristics and risk factors in the sleeping environment associated with sudden infant death syndrome (SIDS) and compare the prevalence with previous English SIDS case-control studies.

DESIGN

Cohort of SIDS in 2020 compared with a combined analysis of two case-control studies conducted in 1993-1996 and 2003-2006.

SETTING

England, UK PARTICIPANTS: 138 SIDS deaths in 2020 compared with 402 SIDS deaths and 1387 age-equivalent surviving controls, combined from previous studies.

RESULTS

The increased vulnerability of SIDS infants identified in previous studies has become more marked. The infants who died in 2020 were younger (median=66 days (IQR: 34-118) vs 86 days (IQR: 52-148), p=0.003) with an increased prevalence of low birth weight (30.5% vs 21.6%, p=0.04) and preterm births (29.6% vs 19.3%, p=0.012). The excess of socioeconomically deprived families, male infants and high levels of maternal smoking during pregnancy were still evident. Among recent deaths, fewer infants were put down or found on their side; however, there was no significant change in the proportion of infants who were put down (15.6% vs 14.6%, p=0.81) and found prone (40.4% vs 35.3%, p=0.37), despite population wide risk reduction advice over three decades. The proportional increase observed in 2003-2006 of half the deaths occurring while sleeping next to an adult was maintained in 2020, and for the vast majority (90%), this was in hazardous circumstances (adult had consumed alcohol, smoked, slept on a sofa, or the infant was premature or low birth weight and less than 3 months old). More deaths also occurred when there was a disruption in infant care routine compared with previous observations (52.6% vs 20.7%, p<0.001).

CONCLUSIONS

A more targeted approach is needed with vulnerable families emphasising the importance of sleeping infants on their back and proactive planning infant sleep when there are disruptions to the normal routine, in particular to avoid hazardous co-sleeping.

Contextual considerations in infant sleep: Offering alternative interventions to families

Infant sleep problems are one of the commonly reported reasons parents seek professional help, yet what constitutes a "sleep problem" depends on the models used to explain the development of infant sleep. The current models are based on research conducted in the western context where infant solitary sleeping is the norm. Parent-child co-sleeping is the norm in many cultures around the world. We argue that the primary focus of current research on parent-child interactions as the mediating context for the development of infant sleep problems has inherently made these models and ensuing interventions less sensitive and applicable to infant sleep problems in the context of co-sleeping families. When families present for help with infant sleep difficulties, extinction based behavioral interventions or interventions focused on reducing parental presence at bedtime are commonly recommended. These recommendations may not always align with cultural values and parenting practices of all families, therefore precluding these families from getting necessary help. In attempting to provide families with choices that depart from behavioral based interventions, this paper draws on research and adapts current models to propose an alternative to conceptualize perceptions of infant sleep problems that may be sensitive to and applied across various cultural and personal contexts. We attempt to provide a rationale for interventions that are inclusive and sensitive to families where reduced parental nighttime responsiveness may not be a preferred choice.

ABM Clinical Protocol #37: Physiological Infant Care-Managing Nighttime Breastfeeding in Young Infants

A central goal of the Academy of Breastfeeding Medicine (ABM) is the development of clinical protocols for managing common medical problems that may impact breastfeeding success. These protocols serve only as guidelines for the care of breastfeeding mothers and infants and do not delineate an exclusive course of treatment or serve as standards of medical care. Variations in treatment may be appropriate according to the needs of an individual patient. The ABM empowers health professionals to provide safe, inclusive, patient-centered, and evidence-based care. Pregnant and lactating people identify with a broad spectrum of genders, pronouns, and terms for feeding and parenting. There are two reasons ABM's use of gender-inclusive language may be transitional or inconsistent across protocols. First, gender-inclusive language is nuanced and evolving across languages, cultures, and countries. Second, foundational research has not adequately described the experiences of gender-diverse individuals. Therefore, ABM advocates for, and will strive to use language that is as inclusive and accurate as possible within this framework. For more explanation, please read ABM Position Statements on Infant Feeding and Lactation-Related Language and Gender (https://doi.org/10.1089/bfm.2021.29188.abm) and Breastfeeding As a Basic Human Right (https://doi.org/10.1089/bfm.2022.29216.abm).

Protecting Infants from Sudden Unexpected Infant Death: Guidelines for Interventions during the Perinatal Period from the French National College of Midwives

With 300-400 annual deaths in France, sudden unexpected infant death (SUID) is the leading cause of mortality in France among infants from the end of their first through their 12th month of life. These clinical practice guidelines aim to identify strategies for (future) parents to prevent avoidable SUIDs. They are based on a narrative literature review and an analysis of the existing reports and guidelines available on the topic in 2019-2020. In summary, it is recommended that parents ensure that their infants sleep on their back on a firm, empty surface in a sufficiently ventilated environment, share the parental bedroom, and be breastfed and vaccinated. All of these actions create protective factors against SUID. Conversely, parents should know that several factors increase the risk of SUID: unsafe sleep, maternal smoking, passive smoking after birth, exposure to alcohol or other psychoactive substances, and excessive heat. Precis: Sudden Unexpected Infant Death prevention includes infants being breastfed and vaccinated, sleeping on their back, on a firm, empty surface, near parents, and that they are not overheated.

Development of a Risk Score to Predict Sudden Infant Death Syndrome

Sudden Infant Death Syndrome (SIDS) is the third leading cause of death among infants younger than one year of age. Effective SIDS prediction models have yet to be developed. Hence, we developed a risk score for SIDS, testing contemporary factors including infant exposure to passive smoke, circumcision, and sleep position along with known risk factors based on 291 SIDS and 242 healthy control infants. The data were retrieved from death certificates, parent interviews, and medical records collected between 1989−1992, prior to the Back to Sleep Campaign. Multivariable logistic regression models were performed to develop a risk score model. Our finalized risk score model included: (i) breastfeeding duration (OR = 13.85, p < 0.001); (ii) family history of SIDS (OR = 4.31, p < 0.001); (iii) low birth weight (OR = 2.74, p = 0.003); (iv) exposure to passive smoking (OR = 2.64, p < 0.001); (v) maternal anemia during pregnancy (OR = 2.07, p = 0.03); and (vi) maternal age <25 years (OR = 1.77, p = 0.01). The area under the curve for the overall model was 0.79, and the sensitivity and specificity were 79% and 63%, respectively. Once this risk score is further validated it could ultimately help physicians identify the high risk infants and counsel parents about modifiable risk factors that are most predictive of SIDS.

The Impact of Breastfeeding and Safe Sleep Mobile Health Messaging on Breastfeeding and Bedsharing

OBJECTIVE

Mobile health (mHealth) safe sleep messaging increases rates of safe sleep. Bedsharing is more common among breastfeeders. Advice to not bedshare may negatively impact breastfeeding. We compared the impact of safe sleep or breastfeeding mHealth messaging on bedsharing and breastfeeding at 2 to 5 months.

METHODS

This is a secondary analysis of mothers who initiated breastfeeding from a cluster randomized clinical trial of mHealth messaging for safe sleep or breastfeeding. A multi-ethnic sample of 1600 mothers was recruited from 16 US birth hospitals and surveyed at 2 to 5 months regarding the previous 2 weeks' breastfeeding and bedsharing practices. Data on 997 mothers who initiated breastfeeding were analyzed with multivariable generalized estimating logistic regression models to examine the association of mHealth messaging with infant care practices.

RESULTS

Overall, exposure to breastfeeding versus safe sleep messaging was not associated with a difference in any breastfeeding at 2 to 5 months (69.3% vs 65.5%, respectively; adjusted odds ratio [aOR] = 1.33 [95% confidence interval, 0.91, 1.94]). Women with shorter planned duration of breastfeeding who received breastfeeding messaging had increased odds of breastfeeding at 2 to 5 months (50% vs 31%; aOR 3.13 [95% CI, 1.47, 6.65]). Mothers who received safe sleep messaging had lower rates of bedsharing overall when compared to breastfeeding messaging (24.8% vs 35.2%; aOR = 0.58 [95% CI, 0.44, 0.78]).

CONCLUSIONS

In this large multi-ethnic US sample, receipt of safe sleep mHealth messaging was associated with lower rates of bedsharing without negatively impacting breastfeeding rates. Future research should focus on continued development of interventions to improve adherence to both safe sleep and breastfeeding recommendations.

Effect of sleep position in term healthy newborns on sudden infant death syndrome and other infant outcomes: A systematic review

Background

Though recommended by numerous guidelines, adherence to supine sleep position during the first year of life is variable across the globe.

Methods

This systematic review of randomized trials and observational studies assessed the effect of the supine compared to non-supine (prone or side) sleep position on healthy newborns. Key outcomes were neonatal mortality, sudden infant death syndrome (SIDS), sudden unexpected death in infancy (SUDI), acute life-threatening event (ALTE), neurodevelopment, and positional plagiocephaly. We searched MEDLINE via PubMed, Cochrane CENTRAL, EMBASE, and CINAHL (updated till November 2021). Two authors separately evaluated the risk of bias, extracted data, and synthesised effect estimates using relative risk (RR) or odds ratio (OR). The GRADE approach was used to assess the certainty of evidence.

Results

We included 54 studies (43 observational studies and 11 intervention trials) involving 474 672 participants. A single study meeting the inclusion criteria suggested that the supine sleep position might reduce the risk of SUDI (0-1 year; OR = 0.39, 95% confidence interval (CI) = 0.23-0.65; 384 infants), compared to non-supine position. Supine sleep position might reduce the risk of SIDS (0-1 year; OR = 0.51, 95% CI = 0.42-0.61; 26 studies, 59332 infants) and unexplained SIDS/severe ALTE (neonatal period; OR = 0.16, 95% CI = 0.03-0.82; 1 study, 119 newborns), but the evidence was very uncertain. Supine sleep position probably increased the odds of being 0.5 standard deviation (SD) below mean on Gross Motor Scale at 6 months (OR = 1.67, 95% CI = 1.22-2.27; 1 study, 2097 participants), but might have little to no effect at 18 months of age (OR = 1.16, 95% CI = 0.96, 1.43; 1 study, 1919 participants). An increase in positional plagiocephaly at 2-7 months of age with supine sleep position is possible (OR = 2.77, 95% CI = 2.06-3.72; 6 studies, 1774 participants).

Conclusions

Low- to very low-certainty evidence suggests that supine sleep position may reduce the risk of SUDI (0-1 year) and SIDS (0-1 year). Limited evidence suggests that supine sleeping probably delays short-term ‘gross motor’ development at 6 months, but the effect on long-term neurodevelopment at 18 months may be negligible.

Evidence Base for 2022 Updated Recommendations for a Safe Infant Sleeping Environment to Reduce the Risk of Sleep-Related Infant Deaths

Every year in the United States, approximately 3500 infants die of sleep-related infant deaths, including sudden infant death syndrome (SIDS) (International Statistical Classification of Diseases and Related Health Problems 10th Revision [ICD-10] R95), ill-defined deaths (ICD-10 R99), and accidental suffocation and strangulation in bed (ICD-10 W75). After a substantial decline in sleep-related deaths in the 1990s, the overall death rate attributable to sleep-related infant deaths have remained stagnant since 2000, and disparities persist. The triple risk model proposes that SIDS occurs when an infant with intrinsic vulnerability (often manifested by impaired arousal, cardiorespiratory, and/or autonomic responses) undergoes an exogenous trigger event (eg, exposure to an unsafe sleeping environment) during a critical developmental period. The American Academy of Pediatrics recommends a safe sleep environment to reduce the risk of all sleep-related deaths. This includes supine positioning; use of a firm, noninclined sleep surface; room sharing without bed sharing; and avoidance of soft bedding and overheating. Additional recommendations for SIDS risk reduction include human milk feeding; avoidance of exposure to nicotine, alcohol, marijuana, opioids, and illicit drugs; routine immunization; and use of a pacifier. New recommendations are presented regarding noninclined sleep surfaces, short-term emergency sleep locations, use of cardboard boxes as a sleep location, bed sharing, substance use, home cardiorespiratory monitors, and tummy time. In addition, additional information to assist parents, physicians, and nonphysician clinicians in assessing the risk of specific bed-sharing situations is included. The recommendations and strength of evidence for each recommendation are published in the accompanying policy statement, which is included in this issue.

Sleep-Related Infant Deaths: Updated 2022 Recommendations for Reducing Infant Deaths in the Sleep Environment

Each year in the United States, ∼3500 infants die of sleep-related infant deaths, including sudden infant death syndrome (SIDS) (International Classification of Diseases, 10th Revision [ICD-10] R95), ill-defined deaths (ICD-10 R99), and accidental suffocation and strangulation in bed (ICD-10 W75). After a substantial decline in sleep-related deaths in the 1990s, the overall death rate attributable to sleep-related infant deaths has remained stagnant since 2000, and disparities persist. The triple risk model proposes that SIDS occurs when an infant with intrinsic vulnerability (often manifested by impaired arousal, cardiorespiratory, and/or autonomic responses) undergoes an exogenous trigger event (eg, exposure to an unsafe sleeping environment) during a critical developmental period. The American Academy of Pediatrics recommends a safe sleep environment to reduce the risk of all sleep-related deaths. This includes supine positioning; use of a firm, noninclined sleep surface; room sharing without bed sharing; and avoidance of soft bedding and overheating. Additional recommendations for SIDS risk reduction include human milk feeding; avoidance of exposure to nicotine, alcohol, marijuana, opioids, and illicit drugs; routine immunization; and use of a pacifier. New recommendations are presented regarding noninclined sleep surfaces, short-term emergency sleep locations, use of cardboard boxes as a sleep location, bed sharing, substance use, home cardiorespiratory monitors, and tummy time. Additional information to assist parents, physicians, and nonphysician clinicians in assessing the risk of specific bed-sharing situations is also included. The recommendations and strength of evidence for each recommendation are included in this policy statement. The rationale for these recommendations is discussed in detail in the accompanying technical report.

The Role of Breastfeeding in Racial and Ethnic Disparities in Sudden Unexpected Infant Death: A Population-Based Study of 13 Million Infants in the United States

Sudden unexpected infant death (SUID) disproportionately affects non-Hispanic Black (NHB) and American Indian/Alaskan Native infants, who have lower rates of breastfeeding than other groups. Using 13,077,880 live-birth certificates and 11,942 linked SUID death certificates from 2015 through 2018, we calculated odds ratios and adjusted risk differences of SUID in infants who were not breastfed across 5 racial/ethnic strata in the United States. We analyzed mediation by not breastfeeding in the race/ethnicity-SUID association. The overall SUID rate was 0.91 per 1,000 live births. NHB and American Indian/Alaskan Native infants had the highest disparity in SUID relative to non-Hispanic White infants. Overall, not breastfeeding was associated with SUID (adjusted odds ratio (aOR), 1.14; 95% confidence interval (CI): 1.10, 1.19), and the adjusted risk difference was 0.12 per 1,000 live births. The aOR of not breastfeeding for SUID was 1.07 (95% CI: 1.00, 1.14) in NHB infants and 1.29 (95% CI: 1.14, 1.46) in Hispanic infants. Breastfeeding minimally explained the higher SUID risk in NHB infants (2.3% mediated) and the lower risk in Hispanic infants (2.1% mediated) relative to non-Hispanic White infants. Competing risks likely explain the lower aOR seen in NHB infants of not breastfeeding on SUID, suggesting that social or structural determinants must be addressed to reduce racial disparities in SUID.

Infant Sleep Hazards and the Risk of Sudden Unexpected Death in Infancy

OBJECTIVE

To examine the effects of infant sofa-sleeping, recent use by caregivers of alcohol, cannabis, and/or other drugs, and bed type and pillows, on the risk of sudden unexpected death in infancy (SUDI) in New Zealand.

STUDY DESIGN

A nationwide prospective case-control study was implemented between March 2012 and February 2015. Data were collected during interviews with parents/caregivers. "Hazards" were defined as infant exposure to 1 or more of sofa-sleeping and recent use by caregivers of alcohol, cannabis, and other drugs. The interaction of hazards with tobacco smoking in pregnancy and bed sharing, including for very young infants, and the difference in risk for Māori and non-Māori infants, also were assessed.

RESULTS

The study enrolled 132 cases and 258 controls. SUDI risk increased with infant sofa-sleeping (imputed aOR [IaOR] 24.22, 95% CI 1.65-356.40) and with hazards (IaOR 3.35, 95% CI 1.40-8.01). The SUDI risk from the combination of tobacco smoking in pregnancy and bed sharing (IaOR 29.0, 95% CI 10.10-83.33) increased with the addition of 1 or more hazards (IaOR 148.24, 95% CI 15.72-1398), and infants younger than 3 months appeared to be at greater risk (IaOR 450.61, 95% CI 26.84-7593.14).

CONCLUSIONS

Tobacco smoking in pregnancy and bed sharing remain the greatest SUDI risks for infants and risk increases further in the presence of sofa-sleeping or recent caregiver use of alcohol and/or cannabis and other drugs. Continued implementation of effective, appropriate programs for smoking cessation, safe sleep, and supplying safe sleep beds is required to reduce New Zealand SUDI rates and SUDI disparity among Māori.

Validation of an Instrument Assessing Certified Nurse Midwives' Attitudes toward Breastsleeping

To date, attitudes towards breastsleeping among certified nurse-midwives caring for post-partum women are not well known. This study describes the validation procedures of two instruments assessing the attitudes of certified nurse-midwives (CNMs) towards breastsleeping. These tools were validated using an 18-item survey administered to a convenience sample of certified nurse-midwives. Participating CNMs were recruited for anonymous participation in an online survey in September-November of 2019. Factor analysis and parallel analysis each revealed a two-factor solution, suggesting that there were two main concepts representing the attitudes of certified nurse-midwives towards breastsleeping; breastsleeping safety and breastfeeding experience. Statistically significant differences for mean breastsleeping safety scores were noted by age group, place of practice, and US geographical region. This article is protected by copyright. All rights reserved.

Using complexity science to understand the role of co-sleeping (bedsharing) in mother-infant co-regulatory processes

Human infants spend most of their time sleeping, but over the first few years of life their sleep becomes regulated to coincide more closely with adult sleep (Galland et al., 2012; Paavonen et al., 2020). Evidence shows that co-sleeping played a role in the evolution of infant sleep regulation, as it is part of an ancient behavioral complex representing the biopsychosocial microenvironment in which human infants co-evolved with their mothers through millions of years of human history (Ball, 2003; McKenna 1986, 1990). This paper is a conceptual, interdisciplinary, integration of the literature on mother-infant co-sleeping and other mother-infant co-regulatory processes from an evolutionary (biological) perspective, using complexity science. Viewing the mother-infant dyad as a "complex adaptive system" (CAS) shows how the CAS fits assumptions of regulatory processes and reveals the role of the CAS in the ontogeny of mother-infant co-regulation of physiological (thermoregulation, breathing, circadian rhythm coordination, nighttime synchrony, and heart rate variability) and socioemotional (attachment and cortisol activity) development.

Development and validation of the Safe Sleep Calculator to assess risk of sudden unexpected death in infancy

We describe the development and validation of a Sudden Unexpected Death in Infancy (SUDI) risk assessment clinical tool. An initial SUDI risk assessment algorithm was developed from an individual participant data meta-analysis of five international SIDS/SUDI case–control studies. The algorithm was translated into a clinical web tool called the Safe Sleep Calculator, which was tested at the routine infant 6-week check-up in primary care clinics in New Zealand. Evidence was gathered through mixed-methods research to inform the revision of the algorithm and the clinical tool. The revised algorithm performance was validated on a new contemporary New Zealand SUDI case–control study dataset and the pilot population data set. The area under the Receiver Operator Characteristic (ROC) curve is 0.89, with a sensitivity of 83.0% and a specificity of 80.9% in the NZ infant population when 0.3 per 1000 live births or more risk is used to define ‘at higher risk’. The Safe Sleep Calculator SUDI risk assessment tool provides individualized evidence-based specific SUDI prevention advice for every infant and enables the concentration of additional SUDI prevention efforts and resource for infants at higher risk.

Population-Based Survey Showing That Breastfed Babies Have a Lower Frequency of Risk Factors for Sudden Infant Death Syndrome Than Nonbreastfed Babies

Justification: Breastfeeding provides the best infant food, and closeness to the mother is crucial for successful breastfeeding. However, sharing parents' beds and sleeping on the stomach poses a high risk for sudden infant death syndrome (SIDS). There is little information on these practices regarding the Spanish population. Objective: To explore breastfeeding and bed-sharing practices in the study population Materials and Methods: A cross sectional observational study was conducted through an anonymous telephone survey with a representative random sample of babies born in the Health Area of La Marina Baixa, Alicante, between 2018 and 2019. A previous-day strategy was implemented to determine the feeding and bed-sharing variables. Results: The total breastfeeding and formula-feeding rates were 47.0% and 52.9%, respectively. The overall bed-sharing rate was 66.5%. The breastfeeding rate was 86.4% with bed-sharing and 13.6% without bed-sharing. The rate of prone sleeping position in children younger than 6 months of age was 9.3-3.5% with breastfeeding and 5.8% with formula feeding. Lower frequencies of tobacco, alcohol, and nonsupine sleeping positions were observed among mothers who practiced breastfeeding and bed-sharing. Conclusions: We found a close relationship between breastfeeding and bed-sharing and a lower frequency of SIDS risk factors associated with both practices. Families should be informed about the risk factors associated with SIDS to encourage safe bed-sharing while avoiding recommendations that discourage breastfeeding.

Bed-Sharing in the First 6 Months: Associations with Infant-Mother Attachment, Infant Attention, Maternal Bonding, and Sensitivity at 18 Months

OBJECTIVE

The objective of this study was to investigate whether bed-sharing during the first 6 months of life is associated with infant's attachment and behavioral outcomes and mother's bonding and sensitive parenting at 18 months of age.

METHODS

The sample with complete longitudinal data comprised 178 infants and their caretakers. Bed-sharing was assessed with maternal report at term, 3, 6, and 18 months. Infant attachment was measured at 18 months using the strange situation procedure. Infant behavioral outcomes (i.e., poor attention/hyperactivity and task persistence) were assessed with 2 observational measures at 18 months. Maternal sensitivity was observed at 3 and 18 months, and mothers reported on bonding to their infant at term, 3, and 18 months.

RESULTS

Bed-sharing was common at term (41.2%), which decreased at 3 months (22.6%) followed by a slight increase at 6 (27.5%) and 18 months of age (31.3%). No associations between bed-sharing during the first 6 months and infant-mother attachment and infant behavioral outcomes at 18 months were found. Similarly, there were no associations between bed-sharing during the first 6 months and maternal bonding and sensitivity at consequent assessment points (i.e., 3 and 18 months).

CONCLUSION

Bed-sharing during the first 6 months is not associated with positive or negative outcomes about infant-mother attachment, infant behavior, maternal bonding, or sensitive parenting.

Reasons mothers bedshare: A review of its effects on infant behavior and development

Bedsharing is controversial for nighttime caregiving in the U.S. today, as in most of the West. However, from the standpoint of evolutionary pediatrics, anthropology, and cultural psychology, bedsharing is not controversial at all, representing the context for human infant evolution and conferring a host of physiological benefits to the infant as well as the mother. In an effort to understand the rise in Western bedsharing in recent decades (and following Ball, 2002; McKenna & Volpe, 2007), Salm Ward (2015) systematically reviewed the literature on mother-infant bedsharing and identified ten reasons why mothers choose to bedshare: (1) breastfeeding, (2) comforting for mother or infant, (3) better/more sleep for infant or parent, (4) monitoring, (5) bonding/ attachment, (6) environmental reasons, (7) crying, (8) cultural or familial traditions, (9) disagree with danger, and (10) maternal instinct. The current paper offers the "review behind the review," highlighting the scientific evidence behind the reasons mothers give for their decision to bedshare, focusing on how mothers' decisions about infant sleep location influence infant behavior and development.

Sudden infant death syndrome prevention

We looked at existing recommendations and supporting evidence for successful strategies to prevent the sudden infant death syndrome (SIDS).

We conducted a literature search up to the 14th of December 2020 by using key terms and manual search in selected sources. We summarized the recommendations and the strength of the recommendation when and as reported by the authors. We summarized the main findings of systematic reviews with the certainty of the evidence as reported.

Current evidence supports statistical associations between risk factors and SIDS, but there is globally limited evidence by controlled studies assessing the effect of the social promotion strategies to prevent SIDS through knowledge, attitude and practices, due to obvious ethical reasons. A dramatic decline in SIDS incidence has been observed in many countries after the introduction of “Back to Sleep” campaigns for prevention of SIDS. All infants should be placed to sleep in a safe environment including supine position, a firm surface, no soft objects and loose bedding, no head covering, no overheating, and room-sharing without bed-sharing. Breastfeeding on demand and the use of pacifier during sleep time protect against SIDS and should be recommended. Parents should be advised against the use of tobacco, alcohol and illicit drugs during gestation and after birth.

Sudden Unexpected Infant Death: Keeping the Newborn Safe in Hospital and at Home

Sudden unexpected infant death is a leading cause of death in infancy. Both safe sleep practices and breastfeeding can help decrease the risk, although the current practice of educating parents about the recommendations has not resulted in universal adherence. Prenatal counseling provides opportunities to discuss recommendations as well as troubleshoot common barriers to breastfeeding and safe infant sleep with goals to gradually change attitudes, address social norms, and prepare new parents. A conversational, motivational approach to discussions about the importance of safe sleep and continued breastfeeding, with explanations as to the reasoning behind these recommendations, can help parents incorporate optimal practices into their lifestyles in a way that is sustainable for adherence.

Norwegian parents avoid placing infants in prone sleeping positions but frequently share beds in hazardous ways

AIM

Campaigns to prevent prone sleeping and other modifiable risk factors have greatly reduced the incidence of sudden infant death syndrome in Norway. Sleep-related infant deaths still occur sporadically and may be preventable. We studied infants' sleeping environments and whether parents followed safe sleep recommendations.

METHODS

Parents with infants up to 12 months of age were invited to complete an online questionnaire from May to December 2018. It was publicised by health centres and on websites and social media.

RESULTS

We received 4886 responses and 4150 met the age criteria and were included. Just under two-thirds (62.7%) reported routine bed-sharing, and this practice was associated with increased nocturnal breastfeeding, single parents and having more than one child. A small number of infants under six months were occasionally placed prone when they were laid down to sleep (2.1%) and 29.7% were placed on their side. Nearly three-quarters (72.6%) of the 2330 parents with infants under six months of age reported previous high-risk behaviour, such as sleeping together on a sofa or bed-sharing after smoking or drinking.

CONCLUSION

Norwegian parents rarely used prone sleeping positions for infants. However, bed-sharing was common, including high-risk scenarios such as smoking, alcohol use and sofas.

Swedish survey of infant sleep practices showed increased bed-sharing and positive associations with breastfeeding

AIM

Many countries lack monitoring of infant sleep practices, despite associations with sudden infant death. We studied sleep positions, bed-sharing and breastfeeding in a new birth cohort.

METHODS

Data were obtained from a prospective, population-based cohort study of children born in western Sweden in 2018. The parents of 9,465 six-month-old infants, via postal questionnaires, were asked about their infants' sleeping positions at three and six months, including where they slept and any bed-sharing arrangements. The data were compared with our earlier 2003-2004 birth cohort.

RESULTS

Questionnaires were completed by the parents of 3,590 (38%) infants. At three months, 54% of the infants slept in a separate cot in their parents' room. A further 43% slept in their parents' bed: 42% in baby nests and 42% in close contact with their parents. At six months, 33% bed-shared, compared with 20% in 2003-2004 (p < 0.001). Bed-sharing was positively associated with breastfeeding (odds ratio at three months: 1.5-2.8, 95% confidence interval: 1.1-4.5).

CONCLUSION

Most infants slept in separate cots during the first three months. However, bed-sharing showed an increasing trend and baby nests were popular. Bed-sharing was positively associated with breastfeeding, but the association may not be causal.

Bed sharing versus no bed sharing for healthy term neonates

BACKGROUND

There is great global variation in the sleeping arrangements for healthy newborn infants. Bed sharing is a type of sleeping practice in which the sleeping surface (e.g. bed, couch or armchair, or some other sleeping surface) is shared between the infant and another person. The possible physiological benefits include better oxygen and cardiopulmonary stability, fewer crying episodes, less risk of hypothermia, and a longer duration of breastfeeding. On the other hand, the most important harmful effect of bed sharing is that it may increase the risk of sudden infant death syndrome (SIDS). Studies have found conflicting evidence regarding the safety and efficacy of bed sharing during infancy.

OBJECTIVES

To evaluate the efficacy and safety of bed sharing, started during the neonatal period, on breastfeeding status (exclusive and total duration of breastfeeding), incidence of SIDS, rates of hypothermia, neonatal and infant mortality, and long-term neurodevelopmental outcomes.

SEARCH METHODS

We used the standard search strategy of Cochrane Neonatal to search the Cochrane Central Register of Controlled Trials (CENTRAL 2020, Issue 7) in the Cochrane Library; MEDLINE via PubMed (1966 to 23 July 2020), CINAHL (1982 to 23 July 2020), and LILACS (1980 to 23 July 2020). We also searched clinical trials databases, and the reference lists of retrieved articles, for randomised controlled trials (RCTs) and quasi-RCTS.

SELECTION CRITERIA

We planned to include RCTs or quasi-RCTs (including cluster-randomised trials) that included term neonates initiated on bed sharing within 24 hours of birth (and continuing to bed share with the mother in the first four weeks of life, followed by a variable time period thereafter), and compared them to a 'no bed sharing' group.

DATA COLLECTION AND ANALYSIS

We used standard methodological procedures as recommended by Cochrane. We planned to use the GRADE approach to assess the certainty of evidence.

MAIN RESULTS

Our search strategy yielded 6231 records. After removal of duplicate records, we screened 2745 records by title and abstract. We excluded 2739 records that did not match our inclusion criteria. We obtained six full-text studies for assessment. These six studies did not meet the eligibility criteria and were excluded.

AUTHORS' CONCLUSIONS

We did not find any studies that met our inclusion criteria. There is a need for RCTs on bed sharing in healthy term neonates that directly assess efficacy (i.e. studies in a controlled setting, like hospital) or effectiveness (i.e. studies conducted in community or home settings) and safety. Future studies should assess outcomes such as breastfeeding status and risk of SIDS. They should also include neonates from high-income countries and low- and middle-income countries, especially those countries where bed sharing is more prevalent because of cultural practices (e.g. Asian countries).

Sleep Consolidation, Sleep Problems, and Co-Sleeping: Rethinking Normal Infant Sleep as Species-Typical

Infants evolved in the context of close contact (including co-sleeping). Evolutionary context is rarely considered in psychological infant sleep research, and Western sleep researchers make assumptions about what optimal "normal" infant sleep is and how to achieve early, deep, infant sleep consolidation and avoid infant sleep problems. However, an evolutionary and anthropological view of infant sleep as species-typical recognizes that human evolution likely prepared the infant brain for optimal development within its evolutionary context - co-sleeping. Thus, "normal" infant sleep, sleep consolidation, and sleep problems should all be understood within the framework of co-sleeping infants, not the historically new-phenomenon of solitary-sleeping infants. Much work needs to be done in order to understand "normal" infant sleep as species-typical and how adaptive infants are to environments that stray from their evolutionary norm.

[Does Bed-Sharing Increase the Risk for Sudden Infant Death Syndrome? - A Review of the Literature and Official Guidelines of Selected EU Countries]

INTRODUCTION

In Europe in 2015, 726 infants died of sudden infant death syndrome (SIDS). Bed-sharing is often discussed as a risk factor for SIDS. This paper examines the evidence on the impact of bed-sharing on the risk of SIDS and considers the official recommendations of individual EU countries on safe infant sleep.

METHOD

An integrative literature review was conducted. The Cochrane Library, Pubmed, CINAHL, and MIDRIS databases were searched using the keywords "Sudden Infant Death Syndrome", "SIDS", bed sharing", "breastfeeding" and "baby sleep" for articles in the German or English language that were published between 2012 and February 2019. In a second step, official recommendations for safe baby sleep from 6 EU countries were analyzed.

RESULTS

The risk for SIDS in bed-sharing three months postpartum is not higher in the absence of risk factors. Not all EU country recommendations on bed-sharing and SIDS differentiate between bed-sharing in the first 3 months of the baby's life and bed-sharing with babies 3 months or older.

CONCLUSION

Parents and health care professionals need evidence-based information to optimize the newborn baby's sleeping environment. Official recommendations on safe baby sleep should be assessed in regards to their congruence with current research findings on bed-sharing and SIDS.

Maternal intentions towards infant sleeping practices in Ireland

AIM

Mortality from Sudden Infant Death Syndrome (SIDS) has reduced by 50%-85% globally. Despite improvements from 1990 to 2009, the Irish SIDS rate has plateaued. Reasons for this are unclear, but may be related to a reduced parental SIDS awareness. Our study aimed to assess intentions regarding infant sleeping practices in mothers in Ireland.

METHODS

A cross-sectional survey of post-partum mothers was performed in the Rotunda Hospital over a four month period. Mothers with a history of SIDS, miscarriage or neonatal admissions were excluded.

RESULTS

Of 451 participants, unsafe sleeping positions were intended by 15.4%, reduced by Irish ethnicity [AOR = 0.52, 95% CI = 0.277-0.959, P = .036]. Safe sleep locations were intended by 66%, increased by Irish ethnicity [AOR = 2.6, 95% CI = 1.617-4.191, P < .001], and reduced by young maternal age [AOR = 0.15, 95% CI = 0.03-0.713, P = .02]. Maternal smoking was more likely in mothers with lower educational level [AOR = 3.51, 95% CI = 1.169-10.56, P = .03]. Soft bedding use was intended by 34.8%, increased in younger mothers [AOR = 2.28, 95% CI = 1.04-4.98, P = .04]. Breastfeeding was intended by 72.2%, decreased by Irish ethnicity [AOR = 0.14, 95% CI = 0.067-0.271, P < .001], and low maternal education [AOR = 0.22, 95% CI = 0.117-0.406, P < .001].

CONCLUSION

Educational campaigns on safe sleep for infants in Ireland need to address modifiable SIDS risks factors, focusing on younger, non-Irish mothers, with lower educational attainment.

A Nursing Perspective on Infant Bed-Sharing Using Multidisciplinary Theory Integration

The American Academy of Pediatrics recommends against bed-sharing between infants and caregivers due to an association with suffocation. Caregivers continue to share a bed with their infant despite these recommendations for a multitude of reasons. A close examination of the bed-sharing literature reveals that the debate is fundamentally about theoretical differences. The major theories used to frame this problem include the triple risk model of bed-sharing and evolutionary theories. Nurses are masters of multidisciplinary collaboration and are well positioned to unify the triple risk and evolutionary views of infant bed-sharing to guide future innovations in health care practice and research.

Circumstances and factors of sleep-related sudden infancy deaths in Japan

Background

Sudden unexpected death in infancy (SUDI) comprises both natural and unnatural causes of death. However, few epidemiological surveys have investigated SUDI in Japan.

Objective

This retrospective study was conducted to investigate the latest trends of circumstances and risk factors of SUDI cases in which collapse occurred during sleep.

Methods

Forensic pathology sections from eight universities participated in the selection of subjects from 2013 to 2018. Data obtained from the checklist form were analyzed based on information at postmortem.

Results

There were 259 SUDI cases consisting of 145 male infants and 114 female infants with a mean birth weight of 2888 ± 553 and 2750 ± 370 g, respectively. Deaths most frequently occurred among infants at 1 month of age (18%). According to population data as the control, the odds ratio (95% confidence interval) of mother’s age ≤19 years was 11.1 (6.9–17.7) compared with ages 30–39. The odds ratio for the fourth- and later born infants was 5.2 (3.4–7.9) compared with the frequency of first-born infants. The most frequent time of day for discovery was between 7 and 8 o’clock, and the time difference from the last seen alive was a mean of 4.1 h. Co-sleeping was recorded for 61%, and the prone position was found for 40% of cases at discovery. Mother’s smoking habit exhibited an odds ratio of 4.5 (2.9–5.8).

Conclusion

This study confirmed the trends that have been observed for sudden infant death syndrome; particularly, very high odds ratios were evident for teenage mothers and later birth order in comparison with those in other developed countries. Neglect was suspected in some cases of the prolonged time to discovery of unreactive infants. To our knowledge, this is the first report of an extensive survey of SUDI during sleep in Japan.

Breastfeeding Duration and Infant Sleep Location in a Cohort of Volunteer Breastfeeding Counselors

BACKGROUND

Debate about mother and infant bed sharing has been polarized between supporters of bed sharing and public health policies that attempt to mitigate the risk of Sudden Infant Death Syndrome. Differences in group demographics may be an important aspect in co-sleeping acceptability.

RESEARCH AIMS

The first aim of this study was to investigate infant sleeping location in a dataset of mothers with strong breastfeeding outcomes. The second aim was to investigate the association between infant sleeping location and breastfeeding (exclusive breastfeeding to 6 months and total breastfeeding duration). Finally, we aimed to investigate predictors of breastfeeding duration.

METHODS

Participants comprised 174 women who had applied to train as counselors with the Australian Breastfeeding Association. Data were compiled from a survey of the participants' lactation histories, including questions related to the exclusivity and duration of breastfeeding, concerns about and problems encountered during breastfeeding, type of birth, medications during birth, demographics, and infant sleeping location. The study design was a cross-sectional, one-group survey design.

RESULTS

A high proportion of participants in this study bed shared and room shared: At 0-1 month (n = 58), 33% of participants bed-shared, which increased to 58% by 6-12 months (n = 80). Infants who co-slept were more likely to be exclusively breastfed at 6 months (χ² (2, n = 116) = 4.83, p = .03) and had longer breastfeeding duration (t (62.61) = 3.81, p < .001).

CONCLUSIONS

Breastfeeding targets have been difficult to achieve globally, and innovative ideas are required to improve breastfeeding outcomes through public health messaging. There was a strong association in the current study between breastfeeding outcomes and degree of closeness of the infant to the mother at night. This finding should be brought into the discourse on breastfeeding and infant sleep arrangements, accompanied by evidence-based advice about safe sleeping and the promotion of breastfeeding.

Mother-Infant Co-Sleeping and Maternally Reported Infant Breathing Distress in the UK Millennium Cohort

Mother-infant co-sleeping or bed sharing is discouraged by health organisations due to evidence that it is associated with unexplained sudden infant death. On the other hand, there is evidence that it should theoretically be beneficial for infants. One line of this evidence concerns breathing regulation, which at night is influenced by the rocking movement of the mother's chest as she breathes. Here, the hypothesis that mother-infant co-sleeping will be associated with a lower probability of infant breathing distress is tested in the UK Millennium Cohort Study (n = 18,552 infants). Maternal, infant, family, and socio-economic covariates were included in logistic regression analysis, and in a machine learning algorithm (Random Forest) to make full use of the number of variables available in the birth cohort study data. Results from logistic regression analysis showed that co-sleeping was associated with a reduced risk of breathing difficulties (OR = 0.69, p = 0.027). The Random Forest algorithm placed high importance on socio-economic aspects of infant environment, and indicated that a number of maternal, child, and environmental variables predicted breathing distress. Co-sleeping by itself was not high in the Random Forest variable importance ranking. Together, the results suggest that co-sleeping may be associated with a modest reduction in risk of infant breathing difficulties.

[Sudden infant death syndrome: Do the parents follow the recommendations?]

INTRODUCTION

Prone sleeping position is the main known modifiable risk factor for sudden infant death syndrome (SIDS). There are other SIDS recommendations although with less impact. The objective of this study is to describe the prevalence of prone position during sleep as well as other risk factors associated with SIDS in a sample of Spanish babies and infants.

METHODS

Cross-sectional study carried out on 640 families with children from 0 months to 11 months. In addition to the sleep position, the adherence to four other recommendations regarding SIDS was analysed: place where infant sleeps, breastfeeding, use of non-nutritive suction, and maternal smoking.

RESULTS

A total of 41.3% of infants under 6 months and 59.7% of infants aged 6 to 11 months slept in a non-recommended position. Only 6.4% of families analysed followed all five recommendations.

DISCUSSION

There is a high prevalence of modifiable risk factors for SIDS among the studied population. Personalized education should be promoted, along with other campaigns to raise awareness and prevent SIDS.

What Is “Normal” Infant Sleep? Why We Still Do Not Know

The human need for sleep is universal and unquestioned; however, humans vary in their sleep needs according to age, individual differences, as well as cultural and social norms and practices. Therefore, what is “normal” in infant sleep and the development of sleep architecture in humans is highly dependent on biological and sociocultural variables as well as socially constructed assumptions about what infant sleep “should” look like. This paper uses a multidisciplinary approach to review papers from fields including pediatrics, anthropology, psychology, medicine, and sociology to understand “normal” infant sleep. Because human culture and behavioral practice changes much more quickly than evolved human biology, and because human evolutionary history occurred in the context of breastfeeding and cosleeping, new work in the field of infant sleep architecture development would benefit from a multidisciplinary approach. To come to a consensus about what is “normal” infant sleep, researchers must agree on underlying basic assumptions of infant sleep from which to ask question and interpret findings.

Infant care practices and parent uptake of safe sleep messages: a cross-sectional survey in Queensland, Australia

Background

Globally, the incidence of sleep-related infant mortality declined dramatically following the first public health campaigns seen internationally in the 1990s to reduce the risks of sudden infant death. However, Australian Sudden Unexpected Death in Infancy (SUDI) rates have plateaued with little change in incidence since 2004 despite two further public health safe sleep campaigns. This study aims to describe contemporary infant care practices employed by families related to the current public health SUDI prevention program.

Methods

A cross-sectional survey of 3341 Queensland primary caregivers with infants approximately 3-months of age was conducted using the Queensland Registry of Births, Deaths and Marriages as a sampling frame. Surveys were returned either via reply-paid mail or online. Questionnaires explored prevalence of infant care practices and awareness of safe sleep recommendations. Univariable analysis was used to generate descriptive statistics for key variables.

Results

Overall, only 13% of families routinely practised all six ‘Safe Sleeping’ program messages. More than one third (1118, 34%) of infants had slept in a non-supine sleep position at some time. Potentially hazardous sleep environments were common, with 38% of infants sleeping with soft items or bulky bedding, or on soft surfaces. Nearly half, for either day- or night-time sleeps, were routinely placed in a sleep environment that was not designed or recommended for safe infant sleep (i.e. a bouncer, pram, beanbag). Most babies (84%) were reportedly smoke free before and after birth. Sleeping in the same room as their caregiver for night-time sleeps was usual practice for 75% of babies. Half (1600, 50%) of all babies shared a sleep surface in the last two-weeks. At 8-weeks, 17% of infants were no longer receiving any breastmilk.

Conclusions

The prevalence rates of infant care practices among this Australian population demonstrate many families continue to employ suboptimal practices despite Australia’s current safe sleep campaign. Strategic approaches together with informed decisions about pertinent messages to feature within future public health campaigns and government policies are required so targeted support can be provided to families with young infants to aid the translation of safe sleep evidence into safe sleeping practices.

Sudden infant death syndrome: current perspectives

Despite significant reductions in incidence since the introduction of safe infant sleeping recommendations, sudden infant death syndrome is still the major cause of neonatal death in western countries. In the United States, over 2500 infants die suddenly and unexpectedly each year with nearly 100 deaths annually in Australia. Health professionals play a critical role in advising parents how to sleep their infants safely to minimise the risk of sudden infant death syndrome and sleeping accidents. Infants should be placed supine to sleep in a cot with a firm well-fitting mattress in the parental bedroom with no soft or loose bedding which could obstruct the airway. Exposure to smoking both before and after birth should be minimised. Breastfeeding should be encouraged, as should immunisation. Dummies can be recommended after breastfeeding has been established. This review outlines the evidence behind these recommendations.

Bedsharing and Breastfeeding: The Academy of Breastfeeding Medicine Protocol #6, Revision 2019

A central goal of the Academy of Breastfeeding Medicine is the development of clinical protocols for managing common medical problems that may impact breastfeeding success. These protocols serve only as guidelines for the care of breastfeeding mothers and infants and do not delineate an exclusive course of treatment or serve as standards of medical care. Variations in treatment may be appropriate according to the needs of an individual patient.

Prevalence and Factors Associated With Safe Infant Sleep Practices

OBJECTIVES

To examine prevalence of safe infant sleep practices and variation by sociodemographic, behavioral, and health care characteristics, including provider advice.

METHODS

Using 2016 Pregnancy Risk Assessment Monitoring System data from 29 states, we examined maternal report of 4 safe sleep practices indicating how their infant usually slept: (1) back sleep position, (2) separate approved sleep surface, (3) room-sharing without bed-sharing, and (4) no soft objects or loose bedding as well as receipt of health care provider advice corresponding to each sleep practice.

RESULTS

Most mothers reported usually placing their infants to sleep on their backs (78.0%), followed by room-sharing without bed-sharing (57.1%). Fewer reported avoiding soft bedding (42.4%) and using a separate approved sleep surface (31.8%). Reported receipt of provider advice ranged from 48.8% (room-sharing without bed-sharing) to 92.6% (back sleep position). Differences by sociodemographic, behavioral, and health care characteristics were larger for safe sleep practices (∼10-20 percentage points) than receipt of advice (∼5-10 percentage points). Receipt of provider advice was associated with increased use of safe sleep practices, ranging from 12% for room-sharing without bed-sharing (adjusted prevalence ratio: 1.12; 95% confidence interval: 1.09-1.16) to 28% for back sleep position (adjusted prevalence ratio: 1.28; 95% confidence interval: 1.21-1.35). State-level differences in safe sleep practices spanned 20 to 25 percentage points and did not change substantially after adjustment for available characteristics.

CONCLUSIONS

Safe infant sleep practices, especially those other than back sleep position, are suboptimal, with demographic and state-level differences indicating improvement opportunities. Receipt of provider advice is an important modifiable factor to improve infant sleep practices.