Parental oxytocin responses during skin-to-skin contact in pre-term infants

Grandmotherhood is associated with reduced OXTR DNA methylation

In mammals, both parental and alloparental care are associated with increased brain oxytocin signaling. Grandmothers are important alloparents in many human families. Based on animal model research showing that peripheral Oxtr methylation is associated with Oxtr expression in the nucleus accumbens, we investigated whether grandmaternal caregiving is associated with lower peripheral OXTR methylation. Results reveal several regions within OXTR where grandmothers have lower DNA methylation compared with non-grandmother controls, and no regions where grandmothers have higher OXTR DNA methylation. Among grandmothers, OXTR methylation was most strongly correlated with the grandmother's assessment of the degree of positive feelings between her and the grandchild, which in turn predicted caregiving engagement. Although there was little evidence that grandmaternal OXTR methylation modulated grandmaternal neural responses to viewing photos of the grandchild within brain regions involved in caregiving motivation, it was negatively correlated with the neural response to an unknown grandchild. Thus, while OT signaling may not be essential for activating grandmaternal brain reward systems in our low-stress experimental context, it may support caregiving motivation towards unrelated children. Future longitudinal research should determine whether the transition to grandmotherhood is associated with a reduction in OXTR methylation.

New policies on skin-to-skin contact warrant an oxytocin-based perspective on perinatal health care

Background

In 2023, the World Health Organization (WHO) published a Global Position Paper on Kangaroo Mother Care (KMC), which is applicable to all countries worldwide: from the moment of birth, every "small and sick" newborn should remain with mother in immediate and continuous skin-to-skin contact (SSC), receiving all required clinical care in that place. This was prompted by the startling results of a randomized controlled trial published in 2021: in which 1,609 infants receiving immediate SSC were compared with 1,602 controls that were separated from their mothers but otherwise received identical conventional state-of-the-art care. The intervention infants showed a 25% reduction in mortality after 28 days.

New perspectives

The new WHO guidelines are a significant change from earlier guidance and common clinical practice. The author presents that separating mothers and babies is assumed to be "normal" (a paradigm) but actually puts newborns at increased risk for morbidity and mortality. The author presents arguments and ethical perspectives for a new perspective on what is "normal," keeping newborns with their mothers is the infant's physiological expectation and critical requirement for healthy development. The author reviews the scientific rationale for changing the paradigm, based on synchronous interactions of oxytocin on both mother and infant. This follows a critique of the new policies that highlights the role of immediate SSC.

Actionable recommendations

This critique strengthens the case for implementing the WHO guidelines on KMC for small and sick babies. System changes will be necessary in both obstetric and neonatal settings to ensure seamless perinatal care. Based on the role of oxytocin, the author identifies that many current routine care practices may actually contribute to stress and increased vulnerability to the newborn. WHO has actionable recommendations about family involvement and presence in newborn intensive care units.

Discussion

The concepts of resilience and vulnerability have specific definitions well known in perinatal care: the key outcome of care should be resilience rather than merely the absence of vulnerability. Newborns in all settings and contexts need us to re-evaluate our paradigms and adopt and implement the new WHO guidelines on KMC in perinatal care.

Neuropeptides affecting social behavior in mammals: Oxytocin

Oxytocin (OXT), a neuropeptide consisting of only nine amino acids, is synthesized in the paraventricular and supraoptic nuclei of the hypothalamus. Although OXT is best known for its role in lactation and parturition, recent research has shown that it also has a significant impact on social behaviors in mammals. However, a comprehensive review of this topic is still lacking. In this paper, we systematically reviewed the effects of OXT on social behavior in mammals. These effects of OXT from the perspective of five key behavioral dimensions were summarized: parental behavior, anxiety, aggression, attachment, and empathy. To date, researchers have agreed that OXT plays a positive regulatory role in a wide range of social behaviors, but there have been controversially reported results. In this review, we have provided a detailed panorama of the role of OXT in social behavior and, for the first time, delved into the underlying regulatory mechanisms, which may help better understand the multifaceted role of OXT. Levels of OXT in previous human studies were also summarized to provide insights for diagnosis of mental disorders.

Effects of a Baby Carrier Intervention on Fathers' Sensitivity, Involvement, and Hormonal Levels: Follow-Up of a Randomized Controlled Study

Objective. Fathers are of great importance for healthy child development. This randomized controlled study investigated the longer-term effects of an intervention using a soft baby carrier on fathers' observed sensitive caregiving, involvement, and oxytocin and cortisol levels. Design. First-time fathers were randomly assigned to use a baby carrier (n = 41) or baby seat (n = 39) and were asked to use the carrier or seat for at least 6 h per week for 3 weeks. Pretest (M child age  = 2.67 months), posttest (M child age  = 3.99 months), and follow-up (M child age  = 8.25 months) father data were collected. Results. No intervention effects of baby carrier use on fathers' sensitivity, involvement, and oxytocin or cortisol levels at follow-up emerged. Unexpectedly, fathers in the baby seat condition reported an increase in the amount of time spent with the infant. Fathers' sensitivity and oxytocin levels decreased over time, while cortisol levels increased over time, irrespective of condition. Conclusions. This study showed less optimal hormonal levels in fathers over time, suggesting that support during the first months of fatherhood is needed. Furthermore, use of a baby seat may have contributed to fathers enjoying their time with their infant and consequently their involvement in child caregiving.

The neurobiological effects of childhood maltreatment on brain structure, function, and attachment

Childhood maltreatment is a risk factor for psychopathologies, and influences brain development at specific periods, particularly during early childhood and adolescence. This narrative review addresses phenotypic alterations in sensory systems associated with specific types of childhood maltreatment exposure, periods of vulnerability to the neurobiological effects of maltreatment, and the relationships between childhood maltreatment and brain structure, function, connectivity, and network architecture; psychopathology; and resilience. It also addresses neurobiological alterations associated with maternal communication and attachment disturbances, and uses laboratory-based measures during infancy and case-control studies to elucidate neurobiological alterations in reactive attachment disorders in children with maltreatment histories. Moreover, we review studies on the acute effects of oxytocin on reactive attachment disorder and maltreatment and methylation of oxytocin regulatory genes. Epigenetic changes may play a critical role in initiating or producing the atypical structural and functional brain alterations associated with childhood maltreatment. However, these changes could be reversed through psychological and pharmacological interventions, and by anticipating or preventing the emergence of brain alterations and subsequent psychopathological risks.

The Effect of Kangaroo Care on Paternal Attachment: A Randomized Controlled Study

BACKGROUND

During the first interaction between the father and the infant, touch can be very important especially father-infant skin-to-skin contact. Few studies have focused on the effect of kangaroo care (KC) on paternal attachment.

PURPOSE

This randomized controlled study was conducted to determine the effect of KC on paternal attachment.

METHODS

A total of 90 fathers of healthy newborns, including 45 in the intervention group and 45 in the control group who met the inclusion criteria, were included randomly in the study. Data were collected using the Introductory Information Form at study admission and the Father-Infant Attachment Scale (FIAS) at 3 months of age. T test, Mann-Whitney U test, and Kruskal-Wallis test were used for statistical analysis.

RESULTS

The mean FIAS scores for the intervention group (I) were higher than for the control group (C) (I: 80.57 ± 13.70; C: 56.76 ± 13.23) ( P < .05). Patience and tolerance (I: 13.70 ± 1.18; C: 11.57 ± 2.30), pleasure in interaction (I: 29.50 ± 2.86; C: 17.13 ± 5.93), and love and pride (I: 37.37 ± 2.85; C: 28.06 ± 5.82) mean scores for FIAS subdimensions in the intervention group were also higher than in the control group ( P < .05).

IMPLICATIONS FOR PRACTICE AND RESEARCH

Findings of this study demonstrate that KC has the potential to increase paternal attachment. Healthcare providers should provide discharge education for fathers on KC to increase father-infant attachment. There is a need for studies with larger samples in different cultures on the factors related to parents that affect father-infant attachment and evidence-based practices that increase attachment.

Human sweat contains oxytocin

BACKGROUND

Oxytocin (OT) has been detected in various body fluids, including blood, urine, saliva, breastmilk, and spinal fluid. Consistent with models that regard skin as a social organ and in line with studies demonstrating that skin cells express both OT and its receptor, our study sought to examine the presence of OT in human sweat.

METHODS

Overall, 553 individuals participated in a pilot study and three experiments. Firstly, 50 participants provided sweat after engaging in various sports for different durations. Secondly, 26 participants provided sweat from forehead, upper-chest, forearm, and underarm, including 11 in natural setting and 15 following OT administration and a 30-minute exercise. Thirdly, of 435 volunteers, 97 provided sufficient axillary sweat for assaying. Of these, 84 participated in a naturalistic experiment that involved saliva and sweat collection in response to physical activity in either solitary or social settings. OT and testosterone (TS) were assayed in sweat and saliva.

RESULTS

Intense activity for at least 25 min was required to produce sufficient sweat for OT analysis. Highest OT levels were found in axillary sweat compared to sweat from the forehead, upper-chest, and forearm. Salivary OT and TS increased after both solitary and social physical activity; however, higher sweat OT was found after solitary sports. Post-hoc preliminary findings indicate that highly extroverted individuals exercising in solitary environments showed the highest sweat OT levels.

CONCLUSIONS

Findings demonstrate, for the first time, the presence of OT in human sweat and show the feasibility of its measurement. Much further research is required to illuminate how sweat OT is impacted by personality and social context and to uncover the role of the skin in OT production.

Father's perceptions and care involvement for their very preterm infants at French neonatal intensive care units

Objectives

We aimed to evaluate (1) fathers' perceptions and care involvement for their very premature infants and their views of the hospitalization period based on parental reports and (2) their evolution over time.

Methods

We used an online parental survey to assess answers from parents of very preterm infants who were successfully discharged from French neonatal units. We analysed answers from February 2014 to January 2019 to an anonymous internet-based survey from the GREEN committee of the French Neonatal Society. Responses were compared for period 1 (P1, 1998 to 2013) and period 2 (P2, 2014 to 2019).

Results

We analyzed 2,483 surveys, 124 (5%) from fathers and 2,359 (95%) from mothers. At birth, 1,845 (80%) fathers were present in the hospital, but only 879 (38%) were near the mother. The presence of fathers in the NICU increased from P1 to P2 (34.5% vs. 43.1%, p = 0.03). Nearly two thirds of fathers accompanied their infants during transfer to the NICU (1,204 fathers, 60.6%). Fathers and mothers had similar perceptions regarding relationships with caregivers and skin-to-skin contact with their infants. However, more fathers than mothers felt welcome in the NICU and in care involvement regarding requests for their wishes when they met their infant (79% vs. 60%, p = 0.02) and in the presentation of the NICU (91% vs. 76%; p = 0.03). Mothers and fathers significantly differed in the caring procedures they performed (p = 0.01), procedures they did not perform but wanted to perform (p < 0.001), and procedures they did not perform and did not want to perform (p < 0.01).

Conclusion

Most fathers were present at the births of their very preterm infants, but fewer fathers were near the mother at this time. Less than two thirds of fathers accompanied their infants to the NICU. There should be further changes to better meet the specific needs of the fathers of infants requiring care in the NICU. Continuing assessment with an online questionnaire may be useful to monitor changes over time in father's involvement in NICUs.

Randomized controlled trial to prevent postpartum depressive symptomatology: An infant carrier intervention

BACKGROUND

There is a need for effective interventions to reduce symptomatology of postpartum depression. The objective of this study was to test whether providing an ergonomic infant carrier would reduce postpartum depression symptomatology.

METHODS

A randomized two-arm, parallel-group trial with 100 participants was conducted between February 2018 and June 2019 in a low-income community. At 30-weeks' gestation, 50 participants were randomly assigned to receive an ergonomic infant carrier and instructions on proper use (intervention group), and 50 participants were assigned to a waitlist (control group). Participants tracked the extent of their infant carrier use and completed the Edinburgh Postpartum Depression Scale (EPDS) to assess postpartum depression symptomatology at 6-weeks postpartum.

RESULTS

Participants in the intervention group reported using an infant carrier significantly more often than the control group (β = 2.69, SE = 0.347, p < .001, 95 % CI = 2.08-3.41). The intervention group reported fewer depressive symptoms at 6-weeks postpartum than the control group (β = -0.541, p = .042).

LIMITATIONS

The sample size was relatively small and thus our results may not be generalizable to the general population.

CONCLUSION

Infant carrying may be a cost-effective intervention to reduce postpartum depression symptomatology. Large-scale studies are warranted to further examine the efficacy and cost-effectiveness of providing carriers as an intervention to reduce postpartum depression symptomatology.

CLINICAL TRIAL REGISTRATION

Clinicaltrials.gov id: NCT04376021. Data Sharing Statement: Deidentified individual participant data will not be made available because we did not obtain permission to share individual data.

CLINICAL TRIAL REGISTRATION NUMBER

NCT0437602; https://beta.

CLINICALTRIALS

gov/study/NCT04376021.

Maternal Voice and Tactile Stimulation Modulate Oxytocin in Mothers of Hospitalized Preterm Infants: A Randomized Crossover Trial

Prematurity is a major risk factor for perinatal stress and neonatal complications leading to systemic inflammation and abnormal mother-infant interactions. Oxytocin (OT) is a neuropeptide regulating the inflammatory response and promoting mother-infant bonding. The release of this hormone might be influenced by either vocal or tactile stimulation. The main objective of the current randomized, crossover, clinical trial was to assess the salivary OT/cortisol balance in mothers following the exposure of their baby born preterm to two types of sensorial interventions: maternal voice without or with contingent tactile stimulation provided by the mother to her infant. Among the 26 mothers enrolled, maternal voice intervention alone had no effect on OT and cortisol levels in the mothers, but when associated with tactile stimulation, it induced a significant increase in maternal saliva oxytocin (38.26 ± 30.26 pg/mL before vs 53.91 ± 48.84 pg/mL after, p = 0.02), particularly in the mothers who delivered a female neonate. Maternal voice intervention induced a significant reduction in cortisol and an increase in OT levels in mothers when the maternal voice with a tactile stimulation intervention was performed first. In conclusion, exposure to the maternal voice with a contingent tactile stimulation was associated with subtle changes in the maternal hormonal balance between OT and cortisol. These findings need to be confirmed in a larger sample size and may ultimately guide caregivers in providing the best intervention to reduce parental stress following preterm delivery.

The evolved nest, oxytocin functioning, and prosocial development

Prosociality, orientation to attuned, empathic relationships, is built from the ground up, through supportive care in early life that fosters healthy neurobiological structures that shape behavior. Numerous social and environmental factors within early life have been identified as critical variables influencing child physiological and psychological outcomes indicating a growing need to synthesize which factors are the most influential. To address this gap, we examined the influence of early life experiences according to the evolved developmental niche or evolved nest and its influence on child neurobiological and sociomoral outcomes, specifically, the oxytocinergic system and prosociality, respectively. To-date, this is the first review to utilize the evolved nest framework as an investigatory lens to probe connections between early life experience and child neurobiological and sociomoral outcomes. The evolved nest is comprised of characteristics over 30 million years old and is organized to meet a child's basic needs as they mature. Converging evidence indicates that humanity's evolved nest meets the needs of a rapidly developing brain, optimizing normal development. The evolved nest for young children includes soothing perinatal experiences, breastfeeding, positive touch, responsive care, multiple allomothers, self-directed play, social embeddedness, and nature immersion. We examined what is known about the effects of each evolved nest component on oxytocinergic functioning, a critical neurobiological building block for pro-sociomorality. We also examined the effects of the evolved nest on prosociality generally. We reviewed empirical studies from human and animal research, meta-analyses and theoretical articles. The review suggests that evolved nest components influence oxytocinergic functioning in parents and children and help form the foundations for prosociality. Future research and policy should consider the importance of the first years of life in programming the neuroendocrine system that undergirds wellbeing and prosociality. Complex, interaction effects among evolved nest components as well as among physiological and sociomoral processes need to be studied. The most sensible framework for examining what builds and enhances prosociality may be the millions-year-old evolved nest.

Developmental Cascades Link Maternal-Newborn Skin-to-Skin Contact with Young Adults' Psychological Symptoms, Oxytocin, and Immunity; Charting Mechanisms of Developmental Continuity from Birth to Adulthood

Premature birth disrupts the continuity of maternal-newborn bodily contact, which underpins the development of physiological and behavioral support systems. Utilizing a unique cohort of mother-preterm dyads who received skin-to-skin contact (Kangaroo Care, KC) versus controls, and following them to adulthood, we examined how a touch-based neonatal intervention impacts three adult outcomes; anxiety/depressive symptoms, oxytocin, and secretory immunoglobulin A (s-IgA), a biomarker of the immune system. Consistent with dynamic systems' theory, we found that links from KC to adult outcomes were indirect, mediated by its effects on maternal mood, child attention and executive functions, and mother-child synchrony across development. These improvements shaped adult outcomes via three mechanisms; (a) "sensitive periods", where the infancy improvement directly links with an outcome, for instance, infant attention linked with higher oxytocin and lower s-IgA; (b) "step-by-step continuity", where the infancy improvement triggers iterative changes across development, gradually shaping an outcome; for instance, mother-infant synchrony was stable across development and predicted lower anxiety/depressive symptoms; and (c) "inclusive mutual-influences", describing cross-time associations between maternal, child, and dyadic factors; for instance, from maternal mood to child executive functions and back. Findings highlight the long-term impact of a birth intervention across development and provide valuable insights on the mechanisms of "developmental continuity", among the key topics in developmental research.

Skin-to-skin contact in the delivery room for very preterm infants: a randomised clinical trial

OBJECTIVE

Evaluating safety, feasibility and effects on physiological parameters of skin-to-skin contact (SSC) from birth between mothers and very preterm infants in a high-income setting.

DESIGN

Open-label randomised controlled trial.

SETTING

Three Norwegian neonatal units.

PATIENTS

Preterm infants at gestational age (GA) 28⁰-31⁶ weeks and birth weight >1000g delivered vaginally or by caesarean section (C-section).

INTERVENTION

Two hours of early SSC between the mother and the infant compared to standard care (SC) where the infant is separated from the mother and transferred to the neonatal unit in an incubator.

RESULTS

108 infants (63% male, 57% C-section, mean (SD) GA 30.3 weeks (1.3) and birth weight 1437 g (260)) were included. Median (IQR) age at randomisation was 23 min (17-30). During the first 2 hours after randomisation, 4% (2 of 51) and 7% (4 of 57) were hypothermic (<36.0°C) in the SSC and SC group, respectively (p=0.68, OR 0.5, 95% CI 0.1 to 3.1). Significantly fewer infants in the SSC group had hyperthermia (>37.5°C) (26% (13 of 57) vs 47% (27 of 51), respectively, p=0.02, OR 0.4, 95% CI 0.2 to 0.9). No infant needed mechanical ventilation within the first 2 hours. Median (IQR) duration of SSC was 120 (80-120) min in the intervention group. There was no difference in heart rate, respiratory rate and oxygen saturation between groups during the first 24 hours.

CONCLUSION

This study from a high-income setting confirmed that SSC from birth for very preterm infants was safe and feasible. Physiological parameters were not affected by the intervention. The long-term effects on neurodevelopment, maternal-infant bonding and maternal mental health will be collected.

TRIAL REGISTRATION NUMBER

NCT02024854.

Influence of oxytocin on parenting behaviors and parent-child bonding: A systematic review

Oxytocin (OT) plays a pivotal role in early parent-child relationship formation and bonding that is critical for the social, cognitive, and emotional development of the child. Therefore, this systematic review aims to consolidate all available evidence regarding the associations of parental OT concentration levels with parenting behavior and bonding within the past 20 years. A systematic search was conducted in five databases from 2002 to May 2022, and 33 studies were finalized and included. Due to the heterogeneity of the data, findings were presented narratively based on the type of OT and parenting outcomes. Current evidence strongly suggests that parental OT levels are positively related to parental touch and parental gaze and affect synchrony and observer-coded parent-infant bonding. No gender difference in OT levels was observed between fathers and mothers, but OT strengthens affectionate parenting in mothers and stimulatory parenting in fathers. Child OT levels were also positively associated with parental OT levels. Family and healthcare providers could encourage more positive touch and interactive play between parent and child to strengthen parent-child relationships.

Nonpharmacologic Factors Affecting Milk Production in Pump-Dependent Mothers of Critically Ill Infants: State of the Science

BACKGROUND

Improved health outcomes for critically ill infants including neurodevelopmental, immunological, and cost benefits are dependent upon the dose and duration of mother's own milk feedings. However, mothers of infants admitted to the neonatal intensive care unit (NICU) must express their milk (pump-dependent) and often struggle with milk production.

PURPOSE

To examine the state of the science on nonpharmacologic modifiable expression factors that may influence milk production in pump-dependent mothers of critically ill infants admitted to the NICU.

DATA SOURCES

PubMed, Embase, and CINAHL databases from 2005 to 2020.

SEARCH STRATEGY

Guided by the lactation conceptual model, the authors searched for peer-reviewed studies with terms related to milk volume, pump dependency, critically ill infants, and modifiable factors, which may influence milk volume and assessed 46 eligible studies.

DATA EXTRACTION

Data were extracted by 3 reviewers with a systematic staged review approach.

RESULTS

Evidence from 26 articles found expressed milk volume may be influenced by multiple potentially modifiable factors. Simultaneous expression with a hospital-grade electric pump at least 5 times per day beginning 3 to 6 hours after delivery, and adding complementary techniques including hand expression, hands-on-pumping, music, breast massage, warm compresses, skin-to-skin care, and the mother expressing near her infant may promote increased milk volume.

IMPLICATIONS FOR PRACTICE AND RESEARCH

Healthcare providers should assist pump-dependent mothers with early initiation and frequent milk removal with a hospital-grade breast pump. Further research is needed to explore optimal frequency of expressions, dose and timing of skin-to-skin care, and other targeted strategies to improve expressed milk volume.

Knowledge, Attitudes, Practices, Barriers and Facilitators to Skin-To-Skin Contact Among Arabian Mothers and Health Care Providers in Arab Countries: A Systematic Scoping Review

BACKGROUND

Skin-to-skin contact (SSC) occurs when a naked full-term neonate is placed on their mother’s bare abdomen or chest within 10 minutes of birth or soon after. Due to its multiple benefits for both the mother and the neonate, SSC is highly recommended by the World Health Organization. However, implementation of SSC in the Arab world is limited.

AIM

To undertake a systematic review to identify the knowledge, attitudes, practice, barriers and facilitators to SSC implementation among Arabian mothers and the health care providers in Arab countries.

METHODS

A systematic scoping review using the JBI three-step search strategy was used to systematically review quantitative and qualitative evidence.

FINDINGS

A total of eight studies were included. Around 82% of mothers would like to have more education about SSC. The majority of mothers (n= 254, 79%) expressed a positive attitude towards SSC, however more than three quarters did not correctly practice SSC. Among the healthcare providers, the mean knowledge score about SSC was 14.42 (95% CI = −0.21 to 29.06,I2= 96%). This review found evidence for barriers to SSC implementation including lack of education, lack of guidelines and cultural beliefs.

CONCLUSIONS

Arabian mothers had positive attitudes towards SSC, but the practice was poor due to lack of education and the lack of protocols and guidelines. The knowledge and practice of Kangaroo Mother Care (KMC) were poor among health care providers (HCPs) despite holding a positive attitude. Assessment of knowledge, attitude, and practice among Arab mothers and HCPs is needed to develop a robust educational programme to raise awareness with regards to SSC.

Risk factors and preventive strategies for post-traumatic stress disorder in neonatal intensive care unit

BACKGROUND

Preterm birth and admission to the neonatal intensive care unit (NICU) could induce post-traumatic stress disorder (PTSD). PTSD is an important factor to focus on, as it is associated with parental mental health difficulties and with changes in caregiving quality such as increased intrusiveness, reduced sensitivity, and increased attachment insecurity for the child.

AIMS

We aimed to study the main risk factors, in the early life of newborns, and preventive measures for PTSD in parents of neonates hospitalized in the NICU.

METHODS

We included parents of preterm newborns, consecutively admitted to the NICU of the University La Sapienza of Rome. The presence of PTSD following preterm birth and NICU admission was assessed using the Clinician-administered PTSD scale (CAPS) at enrollment and at 28-30 days following NICU admission or the moment of discharge. We also evaluated the Family Environment Scale which measures the social environment of all types of families; the Parental Stressor Scale which measures parental anxiety and stress; the Spielberger State-Trait Anxiety Inventory consisting of two parts measuring the State (response to present situation) and Trait (pre-disposition to be anxious) anxieties separately, and the Beck Depression Inventory Second Edition assessing depressive symptoms.

RESULTS

We found, in a multivariate analysis, that the gestational age of newborns admitted to NICU significantly (β = 2.678; p = 0.040) influences the occurrence of PTSD. We found that the cases showed significantly (β = 2.443; p = 0.020) more pathological Parental Stressor Scale sights and sounds scores compared to controls. The early Kangaroo-Care (KC) significantly (β = -2.619; p = 0.015) reduces the occurrence of PTSD.

CONCLUSION

Post-traumatic stress disorder in parents of preterm newborns is a pathological condition that should be properly managed, in the very first days after birth. The NICU environment represents a main risk factor for PTSD, whereas KC has been demonstrated to have a protective role in the occurrence of PTSD.

Hormonal and behavioral responses to an infant simulator in women with and without children

We investigated the impact of maternal status on hormonal reactivity and behavioral responses to an infant simulator in 117 women (54 primiparous, 63 nulliparous). The amount of affectionate touch and motherese were analyzed as behavioral measures of caregiving. Saliva was collected before and 10 min after interaction with the infant simulator to analyze oxytocin, testosterone, cortisol, and estradiol levels. Nulliparous women also provided information about their fertility motivation. Linear mixed models indicated that greater use of affectionate touch was associated with lower overall testosterone levels. Cortisol decreased in response to the interaction in both groups. In the primiparous group, the amount of affectionate touch associated inversely with cortisol levels, whereas in the nulliparous group such association was not found. Oxytocin or estradiol reactivity to the simulator did not differ between the groups, nor were these hormones associated with behavior. Higher fertility motivation in nulliparous women was related to more motherese, and lower testosterone levels. Our results indicate that the simulator elicits hormonal reactivity both in mothers and nonmothers, but the patterns of associations between caregiving behavior and hormonal levels may be partially different. These results encourage using the infant simulator to explore hormonal processes related to the transition to parenthood.

How to support fathers of preterm infants in early parenthood - An integrative review

PROBLEM

Preterm birth is a stressful event. Paternal experiences of having a preterm infant indicate a need for tailored support. However, it is unclear which interventions work best. This review presents the evidence on existing healthcare interventions to support fathers of preterm infants in early parenthood, how effective they are and paternal experiences with the interventions.

ELIGIBILITY CRITERIA

The integrative review process of Whittemore and Knafl was used to guide the study. A structured and comprehensive literature search was conducted in PubMed (MEDLINE), Embase, CINAHL, PsycInfo, Cochrane, Scopus, Web of Science, SweMed+, and Proquest Dissertation & Thesis Global.

SAMPLE

A total of 18 qualitative and quantitative studies were included in the review. The Mixed Methods Appraisal Tool was used to assess quality.

RESULTS

Three overall themes were identified in the analysis: 1) Skin-to-skin contact supported interaction between infant and father, 2) information impacted paternal experiences of stress, anxiety, and development of fatherhood, 3) fathers' relationships with the nurses oscillated between conflict and assistance.

CONCLUSIONS

Our findings show that targeted interventions could support father-infant interaction and reduce stress among fathers of preterm infants.

IMPLICATIONS

Fathers of preterm infants rely on nurses to support their engagement in early parenthood, while nurses facilitate the interventions that engage the fathers. It is also essential to develop a culture within the neonatal intensive care unit that encourages the presence of fathers and enhances educational nursing strategies for supporting fathers of preterm infants during early parenthood.

Skin-to-skin SDF positioning: The key to intersubjective intimacy between mother and very preterm newborn-A pilot matched-pair case-control study

Background

Skin-to-skin contact (SSC) has been widely studied in NICU and several meta-analyses have looked at its benefits, for both the baby and the parent. However, very few studies have investigated SSC' benefits for communication, in particular in the very-preterm newborn immediately after birth.

Aims

To investigate the immediate benefits of Supported Diagonal Flexion (SDF) positioning during SSC on the quality of mother-very-preterm newborn communication and to examine the coordination of the timing of communicative behaviors, just a few days after birth.

Subjects and study design

Monocentric prospective matched-pair case-control study. Thirty-four mothers and their very preterm infants (27 to 31 + 6 weeks GA, mean age at birth: 30 weeks GA) were assigned to one of the two SSC positioning, either the Vertical Control positioning (n = 17) or the SDF Intervention positioning (n = 17). Mother and newborn were filmed during the first 5 min of their first SSC.

Outcome measures

Infants' states of consciousness according to the Assessment of Preterm Infants' Behavior scale (APIB). Onset and duration of newborns' and mothers' vocalizations and their temporal proximity within a 1-s time-window.

Results

In comparison with the Vertical group, very preterm newborns in the SDF Intervention Group spent less time in a drowsy state and more in deep sleep. At 3.5 days of life, newborns' vocal production in SSC did not differ significantly between the two groups. Mothers offered a denser vocal envelope in the SDF group than in the Vertical group and their vocalizations were on average significantly longer. Moreover, in a one-second time-frame, temporal proximity of mother-very preterm newborn behaviors was greater in the SDF Intervention Group.

Conclusion

Although conducted on a limited number of dyads, our study shows that SDF positioning fosters mother-very preterm newborn intimate encounter during the very first skin to skin contact after delivery. Our pioneer data sheds light on the way a mother and her very preterm vocally meet, and constitutes a pilot step in the exploration of innate intersubjectivity in the context of very preterm birth.

Peripartum effects of synthetic oxytocin: The good, the bad, and the unknown

The first clinical applications of oxytocin (OT) were in obstetrics as a hormone to start and speed up labor and to control postpartum hemorrhage. Discoveries in the 1960s and 1970s revealed that the effects of OT are not limited to its peripheral actions around birth and milk ejection. Indeed, OT also acts as a neuromodulator in the brain affecting fear memory, social attachment, and other forms of social behaviors. The peripheral and central effects of OT have been separately subject to extensive scrutiny. However, the effects of peripheral OT-particularly in the form of administration of synthetic OT (synOT) around birth-on the central nervous system are surprisingly understudied. Here, we provide a narrative review of the current evidence, suggest putative mechanisms of synOT action, and provide new directions and hypotheses for future studies to bridge the gaps between neuroscience, obstetrics, and psychiatry.

Understanding factors associated with emotional closeness in parents with a preterm infant in the neonatal intensive care unit

BACKGROUND

There is a dearth of knowledge regarding the specific factors associated with emotional closeness in parents with an infant in the NICU.

AIM

To determine if parental presence, involvement in infant care, holding, skin-to-skin contact (SSC), perceived family-centered care, depression symptoms, and sociodemographic characteristics are associated with the emotional closeness of parents with an infant hospitalized at the NICU.

STUDY DESIGN

This longitudinal descriptive study was conducted in two Canadian level-three NICUs. A sociodemographic questionnaire was completed by parents at enrolment. A closeness diary was completed by each parent for 14 days to measure parental presence, involvement in infant care, holding, SSC, and emotional closeness. One question from the DigiFCC tool was sent daily via text message to the parents' cellphones to measure their perception of the quality of family-centered care they experienced. Parent depression symptoms were measured using the Edinburgh Postnatal Depression Scale at discharge.

RESULTS

A total of 60 families were involved in the study. Increased parental presence (B = 0.21, p < 0.001), increased time involved in infant care (B = 0.14, p < 0.001), increased holding time (B = 0.53, p < 0.001), and greater time in SSC (B = 0.27, p = 0.01) were associated with greater parental emotional closeness.

CONCLUSION

Several factors may enhance parents' emotional closeness when their infant is in the NICU. Care providers need to be aware and adapt their clinical practices accordingly to promote emotional closeness by encouraging parental presence, involvement in infant care, holding, and skin-to-skin contact.

Investigation of Nurses and Midwives' Knowledge and Attitudes towards Early Skin-to-Skin Contact Practice of Mother and Newborn

Amaç: Bu araştırma, hemşire ve ebelerin anne ve yenidoğanın erken ten tene temas uygulamasına yönelik bilgileri ile tutumlarını incelemek amacıyla yapılmıştır.Yöntem: Bu tanımlayıcı araştırma, Ankara’da bir eğitim ve araştırma hastanesinde yürütülmüştür. Araştırmanın örneklemini Ekim 2020-Ocak 2021 tarihleri arasında araştırmayı kabul eden 117 hemşire ve ebe oluşturmuştur. Veriler, araştırmacı tarafından hazırlanan yapılandırılmış veri toplama formu ile “Anne-Yenidoğan Ten Tene Temas Ölçeği” aracılığıyla yüz yüze görüşme tekniği ve google forms üzerinden hazırlanan elektronik veri toplama formu kullanılarak toplanmıştır. Veriler, IBM SPSS Statistics 25.0 paket programı kullanılarak analiz edilmiştir. İstatistiksel olarak anlamlılık düzeyi p&lt;0.05 olarak kabul edilmiştir.Bulgular: Katılımcıların Anne-Yenidoğan Ten Tene Temas Ölçeği’nden aldıkları toplam puan ortalaması 136.33±9.53’dür. Katılımcıların %95.7’sinin doğum sonrası dönemde anne ve yenidoğanın ten tene temas uygulamasını daha önceden duyduğu, %89.7’sinin anne ve yenidoğan ten tene temas becerisini doğru bir şekilde bildiği, %65.4’ünün anne ve yenidoğan ten tene temas uygulamasına yönelik bilgiyi hizmet içi eğitim programından aldığı belirlenmiştir. Katılımcıların %92.3’ünün doğum sonrası dönemde anne ve yenidoğanın ten tene temas becerisini uyguladığı belirlenmiştir. Katılımcıların yaş, meslek ve eğitim durumları açısından anne-yenidoğan ten tene temas ölçeğinden aldıkları puan ortancaları arasında anlamlı bir fark olmamasına rağmen ölçeğin bazı alt boyutları açısından katılımcıların eğitim düzeylerine ve çalıştıkları yerlere göre anneye sağlanan hizmet alt boyutu (p=0.002) ile etkinleştiren faktörler (p=0.03) alınan puanlar arasında istatistiksel olarak anlamlı bir farkın olduğu belirlenmiştir.Sonuç: Çalışmamıza katılan tüm ebe ve hemşirelerin anne ve yenidoğanın ten tene temas uygulaması ile ilgili olumlu tutumlarının olduğu, ebe ve hemşirelerin doğum sonu erken dönemde ten tene temasın anne ve yenidoğan sağlığı için bilgi ve farkındalık oluşturmalarının önemli olduğu değerlendirilmiştir.

Skin-to-skin contact to support preterm infants and reduce NICU-related stress

OBJECTIVE

Hospitalization in the neonatal intensive care unit (NICU) with numerous painful medical interventions, being separated from parents, leads to the high risk of chronic stress for preterm infants. Today, many NICUs use more appropriate developmental care and pain management, but the early and long-term outcomes of stress in these vulnerable infants require searching for more stress-reducing interventions in neonatal care. The objective of the study was to investigate how skin-to-skin contact (SSC) can influence the biologic stress levels in preterm infants in the NICU by assessing cortisol and oxytocin levels.

PARTICIPANTS AND METHODS

The study included 71 preterm infants with gestational age less than 34 + 0/7 weeks who were recruited from level III NICU. The overall design was a baseline-response design. Saliva and urine were collected before (baseline) and after skin-to-skin contact to measure salivary cortisol and urinary oxytocin by enzyme immunoassay method.

RESULTS

The infants' baseline hormonal status was represented by the following indicators: the level of salivary cortisol was 0.402 [0.227; 1,271] μg/dl, urinary oxytocin 48.88 [32.97; 88.11] pg/ml. There was a decrease in salivary cortisol levels to 0.157 [0.088; 0.351] μg/dl compared to baseline (p ˂ 0.001) with a simultaneous increase of the urinary oxytocin level -73.59 [45.18; 108.8] pg/ml (p = 0.028) in response to SSC.

CONCLUSION

Preterm infants in the NICU experience significant stress, characterized by hormonal imbalance: an increased level of the stress hormone cortisol and a decreased level of the anti-stress hormone oxytocin. Skin-to-skin contact helps to ameliorate the hormonal stress in preterm infants by activating the oxytocin release with simultaneous reduction of cortisol secretion.

Daily mother-infant skin-to-skin contact and maternal mental health and postpartum healing: a randomized controlled trial

This randomized controlled trial examined the effects of a daily hour of mother-infant skin-to-skin contact (SSC) during the first five postnatal weeks, compared to care-as-usual, on maternal depressive (primary outcome), anxiety, stress, fatigue, pain, and delivery-related post-traumatic stress symptoms (PTSS). Prenatal symptom severity and touch discomfort were examined as moderators. Mothers and full-term infants were randomly allocated to SSC or care-as-usual conditions and followed during the first postnatal year. For the total group (intention-to-treat analyses), care-as-usual mothers showed an increase of anxiety symptoms from week 2 to 12, while SSC mothers displayed a stability of anxiety symptoms. Also, care-as-usual mothers showed an initial decrease in fatigue followed by an increase, while SSC mothers showed a decrease from week 2 to 12. In per-protocol analyses, including only the SSC dyads who adhered to SSC guidelines, findings on anxiety, but not fatigue, were replicated. No SSC effects were found for depressive, stress, and pain symptoms. No moderator, dose-response, or 52-week follow-up effects were found. PTSS were low with little variation; consequently, analyses were discontinued. Daily SSC in healthy mother-infant dyads may reduce anxiety and fatigue symptoms, but not depressive, stress, and pain symptoms, during the early postpartum period. Replication studies are recommended.

Exploratory study of fathers providing Kangaroo Care in a Neonatal Intensive Care Unit

AIM AND OBJECTIVES

To explore fathers' views and experiences of providing Kangaroo Care (KC) to their baby cared for in a Neonatal Intensive Care Unit (NICU).

BACKGROUND

Kangaroo Care has been known to improve the health outcome for preterm, low birth weight and medically vulnerable term infants and achieve the optimal perinatal health wellbeing for parents and infants. Historically, mothers are considered as the dominant KC providers, whereas fathers are spectators and have been overlooked. Little is known about the fathers' perspectives in providing KC in NICUs.

METHODS

Individual semi-structured interviews were conducted with 10 fathers who delivered KC to their baby when in the NICU. Data were analysed using Braun and Clarke's six-phase thematical framework. The Consolidated Criteria for Reporting Qualitative Research (COREQ) checklist was followed to report this qualitative study.

FINDINGS

Fathers in this study identified they were passing a silent language of love and connecting with their baby by the act of KC in a challenging environment. Three themes emerged: 'Positive psychological connection', 'Embracing father-infant Kangaroo Care' and 'Challenges to father-infant Kangaroo Care'.

CONCLUSION

The findings of this study show KC enhances the bonding and attachment between fathers and infants. The conceptualisation of the paternal role in caregiving to a newborn is evolving as a contemporary practice. Further research is warranted to confirm or refute the study findings. Policies and facilities should be modified to include father-infant KC within the fields of neonatal care.

RELEVANCE TO CLINICAL PRACTICE

It is important for nurses and other health professionals to support and enable fathers to give KC. Father-infant KC is recommended in neonatal care settings.

Benefits of Kangaroo Mother Care on the Physiological Stress Parameters of Preterm Infants and Mothers in Neonatal Intensive Care

It is well documented that the stress of separation of mother and baby can lead to short-term physiological instability as well as neurological, sociological or psychological consequences that may last a lifetime. Objective: The goal was to estimate the effect of kangaroo mother care (KMC) on physiological and biochemical parameters of preterm infant stress and maternal stress in neonatal intensive care. Methods: The investigation involved 112 preterm infants. Two groups were compared according to the mean duration of KMC during 12 days of study: the KMC group (mean duration more than 90 min daily) and the control group (less than 90 min). Results: Kangaroo mother care for more than 90 min on average per day in preterm infants is associated 12 days after the intervention with lower mean cortisol levels (p = 0.02), greater weight gain and less need for parenteral nutrition in preterm infants, as well as less postpartum depression (p = 0.02) and lower cortisol levels (p = 0.002) in the mothers of preterm infants. Conclusions: This study suggests that KMC can be used to improve the stress of preterm infants and their mothers, and that the greater weight gain observed in these preterm infants could contribute to a shorter average hospital stay and lower healthcare expenditure.

Effects of skin-to-skin contact on afterpain and postpartum hemorrhage: A randomized controlled trial

This study determined the effects of skin-to-skin contact between the mother and the infant during the third stage of labor on postpartum hemorrhage and pain. This assessor-blinded randomized controlled trial was conducted with primiparous women. Skin-to-skin contact interventions between the infants and their mothers occurred for 30 min after birth (n = 34), whereas the infants in the control group were provided routine care (n = 34). Data were gathered using a Personal Information Form, the Visual Analog Scale-Pain, postpartum bleeding follow-up bags, and records of blood oxytocin and beta endorphin levels. There was no significant difference in beta-endorphin levels in both groups (p = 0.771), whereas it was determined that the 30th min oxytocin level was significantly higher in the intervention group (The Visual Analog Scale-Pain score at the postpartum sixth hour was significantly lower in the intervention group. It was found that skin-to-skin contact made at the third stage of labor reduced the amount of postpartum hemorrhage. The results of this study suggested that skin-to-skin contact intervention may have beneficial effects on postpartum pain and postpartum hemorrhage in the early postpartum period.

A Systematic Review of the Effects of Skin-to-Skin Contact on Biomarkers of Stress in Preterm Infants and Parents

BACKGROUND

Premature infants and their parents experience significant stress related to separation and lifesaving procedures. While evidence suggests that skin-to-skin contact (SSC) is a stress-reducing intervention for both neonates and parents, the mechanisms that underlie its efficacy are not well understood.

OBJECTIVE

Purpose of this systematic review is to summarize the current state of knowledge on changes in biomarkers (ie, oxytocin [OT], cortisol, hypoxanthine, xanthine, uric acid, and allantoin), associated with SSC in premature infants and parents, that may reflect physiologic responses to stress.

METHODS

A comprehensive literature search was conducted from 1990 to 2020. Studies were selected using prespecified inclusion and exclusion criteria.

RESULTS

Of the 175 studies identified, only 19 are included in this review. Ten studies evaluated only infants, 2 evaluated only parents, and 7 evaluated for changes in biomarkers in both infants and parents. Cortisol was the most common biomarker evaluated. While changes in infants' cortisol levels were highly variable, in 55% of the parent studies, parent cortisol levels decreased following SSC. In both parents and infants, OT levels decreased following SSC. Only 1 study found that allantoin levels were significantly lower in infants who received SSC.

IMPLICATIONS FOR PRACTICE AND RESEARCH

While evidence suggests the numerous benefits of SSC, additional research is needed to identify the optimal biomarker to determine the mechanisms that underlie these effects. The use of novel biomarkers (eg, gene expression changes microbiome) may provide new insights into the mechanisms that underlie the efficacy of SSC.Video Abstract available at:https://journals.lww.com/advancesinneonatalcare/Pages/videogallery.aspx?autoPlay=false&videoId=48.

Ten Years of Neonatal Intensive Care Adaption to the Infants' Needs: Implementation of a Family-Centered Care Model with Single-Family Rooms in Norway

Ten years ago, the Neonatal intensive care unit in Drammen, Norway, implemented Single-Family Rooms (SFR), replacing the traditional open bay (OB) unit. Welcoming parents to stay together with their infant 24 h per day, seven days per week, was both challenging and inspiring. The aim of this paper is to describe the implementation of SFR and how they have contributed to a cultural change among the interprofessional staff. Parents want to participate in infant care, but to do so, they need information and supervision from nurses, as well as emotional support. Although SFR protect infants and provide private accommodation for parents, nurses may feel isolated and lack peer support. Our paper describes how we managed to systematically reorganize the nurse's workflow by using a Plan-Do-Study-Act (PDSA) cycle approach. Significant milestones are identified, and the implementation processes are displayed. The continuous parental presence has changed the way we perceive the family as a care recipient and how we involve the parents in daily care. We provide visions for the future with further developments of care adapted to infants' needs by providing neonatal intensive care with parents as equal partners.

Cuddling very and extremely preterm babies in the delivery room is a positive and normal experience for mothers after the birth

AIM

Extremely preterm infants are separated from their mothers immediately after birth and not placed skin-to-skin in routine neonatal intensive care unit settings. Visual and physical contact in the delivery room as a first cuddle potentially can facilitate early parent-infant interaction and reduce the trauma of separation. Our aim in this study was to explore mothers' experience of delivery room cuddle by collecting qualitative feedback via emotional mapping.

METHODS

Six mothers experiencing delivery room cuddle had been recruited (GA of their babies 24 + 5-29 + 0 weeks, birth weight 540-1019 g). Using a descriptive qualitative approach, semi-structured interviews were performed with six mothers following consent via Zoom or phone between September 2020 and March 2021. Interviews were transcribed using AI Otter and then analysed using thematic analysis.

RESULTS

Analysis of the participants' experiences revealed five themes: fears and hopes around delivery; the moment of delivery-recognising uncertainty; reclaiming normalcy; forming connections; and the journey ahead as an empowered parent.

CONCLUSION

All mothers reported positive emotions about the cuddle with their baby. They highlighted that this physical contact was often the only positive and 'normal' birth experience they had from the time of delivery.

Mother-Infant Dyadic Synchrony in the NICU Context

BACKGROUND

Dyadic synchrony is a co-constructed social process relating to the back and forth interactions between mothers and infants that are strongly associated with neurodevelopment, self-regulation, and attachment. In the neonatal intensive care unit (NICU), this process may become interrupted because of the physiological state of the infant, the emotional state of the mother, and the physical environment of the NICU.

PURPOSE

In applying Feldman's Biobehavioral Model of Synchrony, this empirical review deconstructs the process of dyadic synchrony in the NICU context and provides a conceptual approach to guide both research and clinical practice.

METHODS

First, we examine the theoretical and empirical literature to explicate the primary structural and biophysiological components of synchrony and relate these constructs to the extant research on premature infants. Next, we synthesize the maternal, infant, and contextual factors that facilitate or inhibit the ontogenesis of dyadic synchrony in the NICU. The final section highlights the state of the science in dyadic synchrony in the NICU including gaps and recommendations for future research.

FINDINGS

An empirical review synthesis presents a visual conceptual framework to illustrate multiple processes that depict maternal, infant, and contextual influences of mother-infant synchrony in the NICU.

IMPLICATIONS FOR PRACTICE/RESEARCH

Despite the challenges posed to mother-infant relationships in the NICU, high-quality mother-infant interactions are possible, dyadic synchrony can emerge, and premature infants can develop secure attachments. Clinicians and researchers can apply this conceptual framework of mother-infant dyadic synchrony in the NICU to promote evidence-based research and clinical practice.

Mother-infant contact after birth can reduce postpartum post-traumatic stress symptoms through a reduction in birth-related fear and guilt

OBJECTIVES

Despite the well-documented negative effects of posttraumatic stress symptoms following childbirth (PTSS-FC), research on protective factors for PTSS-FC is still missing. Aiming to fill this gap, we proposed and examined a process model through which maternal-infant skin-to-skin contact after birth reduces PTSS-FC by decreasing negative emotions, especially for women who had operative births.

METHOD

In this longitudinal study, pregnant women (N = 1833) were recruited at community and hospital medical centres in the center of Israel and through internet forums. At Time 1, during pregnancy, they rated their prenatal depressive symptoms which served as an indicator for prenatal vulnerabilities. At Time 2, two-months postpartum (N = 1371, 75% of the sample), they reported their mode of birth, whether they had skin-to-skin contact with their newborn after birth, their emotions during birth, and rated their current PTSS-FC. A moderated mediation analysis was used to examine the proposed model.

RESULTS

Guilt and fear during birth mediated the association between mode of birth (instrumental or cesarean versus vaginal) and PTSS-FC. Skin-to-skin contact was related to reduced feelings of guilt and fear during birth, especially for women who had a cesarean section.

CONCLUSIONS

Our results recognize the specific emotions that contribute to the development of PTSS-FC following operative births and show how skin-to-skin contact can possibly reduce them. As such they emphasize the importance of the implementation of skin-to-skin contact following childbirth, and especially following a cesarean section as recommended by the Baby Friendly Health Initiative (World Health Organization & UNICEF, 2009).

Emotional Closeness Among NICU Fathers: A Qualitative Descriptive Study

BACKGROUND

The unique perspective of fathers with an infant in the neonatal unit on the development of emotional closeness toward their infant is not well understood. The purpose of this study is to explore experiences and instances of emotional closeness from the perspective of fathers as well as factors influencing emotional closeness during an infant's hospitalization in the neonatal unit.

METHODS

This qualitative descriptive study employed one-on-one interviews with fathers recruited in a level 3 neonatal unit. The interview data were analyzed with thematic analysis, and emerging themes and subthemes were organized according to dimensional analysis.

RESULTS

Eight fathers agreed to take part in this study. According to the participants, emotional closeness was a complex process composed of multiple dimensions. More specifically, emotional closeness was a difficult-to-describe, mixed, and growing feeling influenced by multiple factors such as the environment, co-parenting, and the father-infant relationship. It occurred in the contexts of presence and separation in the neonatal unit and was part of the development of the father-infant relationship.

IMPLICATIONS FOR PRACTICE

The results presented in this article are important for neonatal intensive care unit nurses who support fathers in the development of their fathering role. By knowing more about the process and dimensions of emotional closeness, nurses can direct their interventions with fathers to enhance emotional closeness and better understand their experience.

IMPLICATIONS FOR RESEARCH

No previous study has addressed emotional closeness as a complex process with multiple components like the current study. These findings contribute to our understanding of the process of emotional closeness for fathers.

The Effect of Paternal Skin-to-Skin Care: A Systematic Review and Meta-analysis of Randomized Control Trials

BACKGROUND

Research about skin-to-skin care (SSC) experiences in early period after birth has focused on mothers and infants.

PURPOSE

The purpose of this study was to determine the outcomes of paternal skin-to-skin care (P-SSC) in both fathers and infants.

METHODS

The Cochrane Central Register of Controlled Trials (CENTRAL), PubMed/MEDLINE, Embase, CINAHL, PsycInfo, Airiti Library, and Google Scholar were searched for randomized controlled trials (RCTs) that reported outcomes of P-SSC in both fathers and infants. We calculated pooled mean differences (MDs) and 95% confidence intervals (CIs) using RevMan 5.3 for the meta-analysis [PROSPERO: CRD42018106790].

RESULTS

Seven RCTs including a total of 552 participants were eligible for inclusion. Compared to the maternal skin-to-skin care (M-SSC), fathers in the P-SSC exhibited no significant differences in salivary oxytocin levels (MD: -0.35 pg/mL; 95% CI: -0.75, 0.05), salivary cortisol levels (MD: 0.25 μg/dL; 95% CI: -0.82, 1.33), or anxiety scores (MD: -0.17; 95% CI: -0.57, 0.22) during the period of SSC. Similarly, there were no significant differences in the salivary cortisol levels (MD: -0.11 μg/dL; 95% CI: -0.05, 0.28) among preterm infants between the 2 groups. However, the crying time was less among full-term infants in the P-SSC group compared with infants in the incubator care or cot care groups.

IMPLICATIONS FOR PRACTICE AND RESEARCH

P-SSC had similar effects as M-SSC on stress-related outcomes during and after SSC among fathers and infants in the early stages after birth. We recommend that P-SSC be implemented in the early stages after birth. Further RCTs with a longitudinal design and large samples are needed to better understand the long-term effects of P-SSC on fathers and infants.

French translation and preliminary psychometric validation of a skin-to-skin contact instrument for nurses (SSC-F)

PURPOSE

To translate and conduct the preliminary psychometric validation of a skin-to-skin contact instrument in French (SSC-F) with a sample of nurses from Quebec and France working in neonatal intensive care units.

METHODS

The 20 items of the SSC instrument containing four subscales (knowledge, attitudes and beliefs, training and education and implementation), developed by Vittner et al. (2017), was translated into French. The methodological steps used for psychometric validation included assessment of the item and subscale normality distributions, assessment of reliability using internal consistency, and assessment of validity using inter-item and inter-scale correlations and principal component analysis.

RESULTS

The preliminary psychometric validation showed that all four subscales of the French version had adequate internal consistency (0.61-0.77), supporting the calculation of a total score for each subscale based on the English version of the instrument. The structural validity was supported by principal component analysis findings.

PRACTICE IMPLICATIONS

Based on the findings of the preliminary psychometric validation of our study, the SSC-F instrument could be used in research with French-speaking neonatal nurses in Western countries, but gathering more evidence about its reliability and validity is warranted for clinical practice.

Parents' Experiences of Immediate Skin-to-Skin Contact After the Birth of Their Very Preterm Neonates

OBJECTIVE

To explore parents' experiences of immediate skin-to-skin contact after the birth of their very preterm neonates and their perceptions regarding care and support from staff.

DESIGN

A descriptive qualitative study.

SETTING

Birth and neonatal units within a university hospital in Sweden.

PARTICIPANTS

Six parent couples who co-cared for their very preterm neonates with skin-to-skin contact throughout the first 6 hours after birth.

METHODS

We analyzed individual interviews using reflexive thematic analysis as described by Braun and Clarke.

RESULTS

The parents' experiences of immediate skin-to-skin contact with their very preterm neonates were represented by the following three themes: A Pathway to Connectedness, Just Being in a Vulnerable State, and Creating a Safe Haven in an Unknown Terrain. Skin-to-skin contact helped the parents attain their roles as essential caregivers and provided a calming physical sensation that promoted parents' feelings of connectedness with their newborns. When parents provide skin-to-skin contact at birth, staff members need to recognize and address their vulnerability. A good relationship with nursing staff, which was mediated through staff behaviors and availability, facilitated skin-to-skin contact.

CONCLUSION

Skin-to-skin contact initiated at birth with very preterm neonates was a valuable and empowering experience for parents and enhanced early bonding between parents and their newborns. Staff members should recognize that skin-to-skin contact between parents and neonates is an interactive process that has challenges. Future research is warranted to understand the needs of nursing staff who provide initial care in the postpartum period. Furthermore, we recommend the implementation of maternal-neonatal couplet care.

Systematic review shows the benefits of involving the fathers of preterm infants in early interventions in neonatal intensive care units

Aim

This review identifies interventions involving the fathers of preterm infants that have been tested in neonatal intensive care units (NICU). It examines their effects on the fathers and infants and highlights any differences between fathers and mothers who took part in the same interventions.

Methods

A systematic search was performed in English from 1995 to 1 September 2020, using the CINAHL, Cochrane Central Register of Controlled Trials, Embase, PubMed and PsycINFO databases. We examined 14 peer‐reviewed studies that investigated NICU interventions involving 478 fathers, whose 511 infants were born before 37 weeks of gestation. These included empirical studies with clinical outcomes.

Results

Studies on fathers' interventions in NICUs were limited and mainly restricted to basic skin‐to‐skin contact or tactile interventions. The interventions had similar general positive effects on mothers and fathers when it came to infant physiological and behavioural reactions. There was also evidence of a positive effect on the fathers, including their mental health.

Conclusion

Including fathers as active partners in the care of their preterm newborn infants produced good outcomes for both of them. Further research is needed to develop new, multimodal and interactive interventions that provide fathers with positive contact with their preterm infants.

Maternal speech decreases pain scores and increases oxytocin levels in preterm infants during painful procedures

Preterm infants undergo early separation from parents and are exposed to frequent painful clinical procedures, with resultant short- and long-term effects on their neurodevelopment. We aimed to establish whether the mother's voice could provide an effective and safe analgesia for preterm infants and whether endogenous oxytocin (OXT) could be linked to pain modulation. Twenty preterm infants were exposed to three conditions-mother's live voice (speaking or singing) and standard care-in random order during a painful procedure. OXT levels (pg/mL) in saliva and plasma cortisol levels were quantified, and the Premature Infant Pain Profile (PIPP) was blindly coded by trained psychologists. During the mother's live voice, PIPP scores significantly decreased, with a concomitant increase in OXT levels over baseline. The effect on pain perception was marginally significant for singing. No effects on cortisol levels were found. The mother's live voice modulated preterm infants' pain indicators. Endogenous OXT released during vocal contact is a promising protective mechanism during early painful interventions in at-risk populations.

Salivary oxytocin, cognitive anxiety and self-confidence in pre-competition athletes

It is well known that soccer sport has the potential for high levels of stress and anxiety and that these are linked to Cortisol (C) variations. To date, much research has been devoted to understanding how Oxytocin (OT) can affect anxiety in response to a challenge. The aim of this study was to investigate, in 56 young male soccer players, the psychophysiological stress response 96 and 24 h before one soccer match of a tournament, in order to establish whether athletes who won or lost, show different levels of C and OT or expressions of competitive state anxiety subcomponents. We found that winners had significantly lower Cognitive anxiety and higher Self-confidence scores than losers. Also, significant differences between winners and losers in C and OT concentrations were observed, with higher OT levels in who has won and higher C levels in who has lost. Our results showed interesting associations between OT, C, anxiety feelings, and the outcome of competition.

Risk factors for postpartum depressive symptoms among mothers of Colorado-born preterm infants

OBJECTIVE

Identify risk factors of postpartum depressive symptoms (PDS) among preterm infants' mothers.

STUDY DESIGN

Retrospective cross-sectional analysis of Colorado's Pregnancy Risk Assessment Monitoring System from 2012 to 2018 included weighted n = 33,633 mothers of preterm infants. Multivariate regression models calculated adjusted risk factors of PDS.

RESULTS

PDS risk factors include history of maternal depression (adjusted risk ratio [aRR] 1.98, 95% confidence interval [CI] 1.28-3.05), early preterm birth <34wga (aRR 1.48, 95% CI 1.05-2.08), no prenatal care (aRR 3.19, 95% CI 1.52-6.71), non-Hispanic other (Asian/Pacific Islander, American Indian/Alaskan, or mixed) race/ethnicity (aRR 1.76, 95% CI 1.10-2.82), and pre-pregnancy public insurance (aRR 2.34, 95% CI 1.46-3.76).

CONCLUSION

PDS risk factors among Colorado mothers of preterm infants slightly differ from identified risk factors among mothers of term infants. These findings can improve PDS screening and diagnosis so effective therapies and support can be offered during and after NICU hospitalization.

Systematic review confirmed the benefits of early skin-to-skin contact but highlighted lack of studies on very and extremely preterm infants

AIM

We systematically reviewed the literature to identify the benefits of early skin-to-skin contact (SSC) for all gestational ages.

METHODS

The MEDLINE, Embase and CINAHL databases were searched for papers published in English from 1 January 1975 to 31 March 2020. Early SSC was defined as when the infant was placed directly onto the mother's chest within 180 min of birth. Two authors independently searched the databases, appraised study quality and extracted the study design and outcome data. The primary outcomes were the infants' physiological stability after birth: thermoregulation and stabilisation. The secondary outcomes were exclusive breastfeeding and mother-infant interaction.

RESULTS

We reviewed 30 studies that assessed the benefits of early SSC: 22 comprised term-born healthy infants and eight focused on preterm or ill infants. These included various gestational ages, birth methods and cultural backgrounds. The studies demonstrated that early SSC stabilised neonatal physiological parameters, promoted exclusive breastfeeding and supported bonding. Most of the data were from term and late preterm births.

CONCLUSION

This systematic review showed that early SSC could be beneficial. Further studies that focus on providing very and extremely preterm infants with SSC, and parental experiences, are needed to enable SSC to be adopted as routine practice.

Physical touch during father-infant interactions is associated with paternal oxytocin levels

INTRODUCTION

Physical connection, particularly parent-to-infant touch, is critical for the well-being of infants and may support the development of the parent-infant bond. Physical touch has also been found to stimulate oxytocin levels. This study tested whether fathers' micro-coded touch behaviors during parent-child interaction predicted their subsequent oxytocin levels. We also compared two widely-used methods of oxytocin immunoassay that have been found to yield discrepant results in past studies.

METHODS

Among 45 fathers and their six-month-old infants, we micro-coded paternal physical touch at 1/10 s intervals during a laboratory-based free-play interaction. Paternal oxytocin was measured via blood plasma and was processed both with and without the extraction step prior to immunoassay so that results from the two methods could be compared.

RESULTS

Unextracted and extracted oxytocin were moderately correlated within our sample. Fathers who engaged in more playful proprioceptive touch showed higher levels of both unextracted and extracted oxytocin. Gentle affectionate touch and functional proprioceptive touch predicted higher unextracted but not extracted oxytocin levels. Fathers who did not engage in physical touch showed lower levels of both unextracted and extracted oxytocin.

CONCLUSION

Results are consistent with previous work showing that physical touch, particularly playful proprioceptive touch, is associated with higher oxytocin levels in fathers. These results replicate previous research using unextracted oxytocin measurement, and extend this work, showing that many but not all associations hold when using the more rigorous method of extraction when measuring oxytocin.

Integrated Review of the Assessment of Newborns With Neonatal Abstinence Syndrome

OBJECTIVE

To critically review and summarize current knowledge regarding the assessment of newborns with neonatal abstinence syndrome (NAS).

DATA SOURCES

We searched the following databases for articles on the assessment of newborns with NAS that were published in English between January 2014 and June 2020: PubMed, CINAHL, and PsycINFO. Keywords and Medical Subject Heading terms used to identify relevant research articles included neonatal abstinence syndrome; Finnegan Scale; eat, sleep, console; epigenetics; genetics; pharmacokinetics; and measurement. We independently reviewed articles for inclusion.

STUDY SELECTION

We retrieved 435 articles through database searches and 17 through manual reference searches; 31 articles are included in the final review. Excluded articles were duplicates, not relevant to NAS, qualitative studies, and/or of low quality.

DATA EXTRACTION

We used the methodology of Whittemore and Knafl to guide this integrative review. We extracted and organized data under the following headings: author, year and country, purpose, study design, participants, measurement, biomarker (if applicable), results, limitations, recommendations, and intervention.

DATA SYNTHESIS

The Finnegan Neonatal Abstinence Scale is the most widely used instrument to measure symptoms of NAS in newborns, although it is very subjective. Recently, there has been a transition from the Finnegan Neonatal Abstinence Scale to the eat, sleep, console method, which consists of structured assessment and intervention and has been shown to decrease length of hospital stay and total opioid treatment dose. Researchers examined biomarkers of NAS, including genetic markers and autonomic nervous system responses, on the variation in incidence and differential severity of NAS. In the included articles, women with opioid use disorder who were treated with naltrexone during pregnancy gave birth to newborns without NAS diagnoses. However, most women who were treated with buprenorphine gave birth to newborns with NAS diagnoses.

CONCLUSION

NAS negatively affects newborns in a multitude of ways, and the objective assessment and measurement of the newborn's response to withdrawal remains understudied and needs further investigation.

Measures of Lactation Outcomes in Women Delivering Preterm Infants

BACKGROUND

Mother's own milk (MOM) is well known to decrease prematurity-related morbidities, yet mothers delivering preterm infants often produce insufficient quantities of milk to provide these benefits. Although a critical need exists for research to support lactation success in this vulnerable population, development and investigation of interventions to increase available MOM for infant consumption requires consistent, valid, and reliable measures of lactation outcomes.

OBJECTIVES

The aim of this study was to compare and contrast methods of measuring lactation outcomes in mothers of preterm infants and evaluate their advantages and disadvantages.

METHODS

Measures of lactation outcomes were reviewed and synthesized. Insights on best practices and future research directions are provided.

RESULTS

Volume of MOM produced, lactation duration, and time to onset of secretory activation are important measures of lactation success. The most valid and reliable measure of milk production is likely weighing each vial of expressed milk combined with test weighing when infants breastfeed. Measures of lactation duration should include actual days mothers lactated rather than limiting to infant consumption of MOM as a proxy for duration and include not only whether mothers are lactating at infant discharge but whether they are also lactating at other health-relevant time points during hospitalization. Although time to onset of secretory activation is an important lactation outcome, information regarding valid and reliable indicators of onset in women delivering preterm infants is limited, and investigation of such indicators is a research priority. Variables that may affect lactation outcomes, including time to initiation of expression following delivery, duration of expression sessions, expression method, time spent in skin-to-skin care, maternal demographics and comorbidities, as well as maternal intent to lactate, must be considered when researchers investigate lactation outcomes in mothers of very low birth weight infants.

DISCUSSION

Consistent and valid measures of lactation outcomes are required to produce reliable results from which evidence-based practice recommendations can be developed in order to improve lactation success in this vulnerable population.

Improving the uptake of Kangaroo Mother Care in neonatal units: A narrative review and conceptual framework

Kangaroo Mother Care is a beneficial intervention for high-risk infants; however, global uptake is lacking. Recent systematic reviews have collated the numerous studies that identify diverse barriers and enablers to the use of Kangaroo Mother Care. In this narrative review, we combine the findings of these systematic reviews with more recent studies to propose a conceptual framework, encompassing factors that may affect the initiation and maintenance of Kangaroo Mother Care in neonatal units. CONCLUSION: This conceptual framework includes parental, healthcare professional, and healthcare system factors, and highlights the potential interplay between them. In line with this, we suggest strategies to improve the uptake of Kangaroo Mother Care in neonatal units.

Delivering Clinically on Our Knowledge of Oxytocin and Sensory Stimulation: The Potential of Infant Carrying in Primary Prevention

Oxytocin (OT) is one of the most intensively researched neuropeptides during the three past decades. In benign social contexts, OT exerts a range of desirable socioemotional, stress-reducing, and immunoregulatory effects in mammals and humans and influences mammalian parenting. Consequentially, research in potential pharmacological applications of OT toward human social deficits/disorders and physical illness has increased substantially. Regrettably, the results from the administration of exogenous OT are still relatively inconclusive. Research in rodent maternal developmental programming has demonstrated the susceptibility of offspring endogenous OT systems to maternal somatosensory stimulation, with consequences for behavioral, epigenetic, cognitive, and neurological outcomes. A translation of this animal research into practically feasible human parenting recommendations has yet to happen, despite the significant prevention potential implied by the maternal developmental programming research. Extended physical contact with full-term healthy infants in the months following birth (infant carrying) might constitute the human equivalent of those specific rodent maternal behaviors, found to positively influence emerging OT systems. Findings from both OT and maternal programming research parallel those found for infants exposed to such extended parental physical contact, whether through skin-to-skin contact or infant carrying. Clinical support of parents to engage in extended physical contact represents a feasible intervention to create optimum conditions for the development of infant OT systems, with potential beneficial long-term health effects.

Parent-Infant Skin-to-Skin Contact and Stress Regulation: A Systematic Review of the Literature

Several studies have focused on neonatal maternal separation (MS) to investigate behavioural and neuroendocrine reactions to lack of contact, but only a few have focused on early separation in the first days or weeks after birth. This literature review investigates the vital importance of contact and touch by exploring how skin-to-skin contact (SSC) regulates stress in the mother-infant relationship. Various databases such as PubMed, Scopus, and ScienceDirect were searched for literature published between 2015 and 2020. From 1141 articles, 22 were declared eligible. The reviewed articles showed how SSC regulates child stress by biological indicators such as the autonomic nervous system (ANS), heart rate variability (HRV), cortisol, and oxytocin. This research concludes the importance of SSC for stress regulation, especially during the COVID-19 pandemic. With no research to date indicating a possible risk of neonatal COVID-19 transmission following SSC, SSC should continue to be practiced for all women, as recommended by the WHO.

Fathers' oxytocin responses to first holding their newborns: Interactions with testosterone reactivity to predict later parenting behavior and father-infant bonds

Little is known about human fathers' physiology near infants' births. This may represent a period during which paternal psychobiological axes are sensitive to fathers' new experiences of interacting with their newborns and that can provide insights on how individual differences in fathers' biology relate to post-partum parenting. Drawing on a sample of men in South Bend, IN (U.S.), we report results from a longitudinal study of fathers' oxytocin, cortisol, and testosterone (N = 211) responses to their first holding of their infants on the day of birth and men's reported caregiving and father-infant bonding at 2-4 months post-partum (N = 114). First-time fathers' oxytocin was higher following first holding of their newborns, compared to their pre-holding levels. Contrasting with prior results, fathers' percentage change in oxytocin did not differ based on skin-to-skin or standard holding. Drawing on psychobiological frameworks, we modeled the interactions for oxytocin reactivity with testosterone and cortisol reactivity, respectively, in predicting father-infant outcomes months later. We found significant cross-over interactions for (oxytocin × testosterone) in predicting fathers' later post-partum involvement and bonding. Specifically, we found that fathers whose testosterone declined during holding reported greater post-partum play if their oxytocin increased, compared to fathers who experienced increases in both hormones. We also observed a similar non-significant interaction for (oxytocin × cortisol) in predicting fathers' post-partum play. Fathers whose testosterone declined during holding also reported less involvement in direct caregiving and lower father-infant bonding if their oxytocin decreased but greater direct care and bonding if their testosterone increased and oxytocin decreased. The results inform our understanding of the developmental time course of men's physiological responsiveness to father-infant interaction and its relevance to later fathering behavior and family relationships.

A systematic review of human paternal oxytocin: Insights into the methodology and what we know so far

With the consolidation of fathers' engagement in caregiving, understanding the neuroendocrine and hormonal mechanisms underlying fatherhood becomes a relevant topic. Oxytocin (OT) has been linked with maternal bonding and caregiving, but less is known about the role of OT in human fatherhood and paternal caregiving. A systematic review of methods and findings of previous OT research in human fathers was carried. The literature search on PubMed and Scopus yielded 133 records. Twenty-four studies were included and analyzed. Significant variability emerged in OT methodology, including laboratory tasks, assessment methods, and outcome measures. Fathers' OT levels appear to increase after childbirth. OT was significantly correlated with less hostility and with the quality of paternal physical stimulation in play interactions, but not with paternal sensitivity. Fathers' and children's OT levels were significantly correlated in a limited subset of studies, intriguingly suggesting that cross-generational OT regulation may occur during the early years of life. This study highlights relevant issues and limitations of peripheral OT assessment in human subjects, especially in fathers. Although the study of paternal neuroendocrinology appears promising, coping with these issues requires dedicated efforts and methodological suggestions are provided to guide future advances in this field.