A Norwegian prospective study of preterm mother-infant interactions at 6 and 18 months and the impact of maternal mental health problems, pregnancy and birth complications

Pregnancy and birth complications and long-term maternal mental health outcomes: A systematic review and meta-analysis

BACKGROUND

Few studies have examined the associations between pregnancy and birth complications and long-term (>12 months) maternal mental health outcomes.

OBJECTIVES

To review the published literature on pregnancy and birth complications and long-term maternal mental health outcomes.

SEARCH STRATEGY

Systematic search of Cumulative Index to Nursing and Allied Health Literature (CINAHL), Excerpta Medica Database (Embase), PsycInfo®, PubMed® and Web of Science from inception until August 2022.

SELECTION CRITERIA

Three reviewers independently reviewed titles, abstracts and full texts.

DATA COLLECTION AND ANALYSIS

Two reviewers independently extracted data and appraised study quality. Random-effects meta-analyses were used to calculate pooled estimates. The Meta-analyses of Observational Studies in Epidemiology (MOOSE) guidelines were followed. The protocol was prospectively registered on the International Prospective Register of Systematic Reviews (PROSPERO: CRD42022359017).

MAIN RESULTS

Of the 16 310 articles identified, 33 studies were included (3 973 631 participants). Termination of pregnancy was associated with depression (pooled adjusted odds ratio, aOR 1.49, 95% CI 1.20-1.83) and anxiety disorder (pooled aOR 1.43, 95% CI 1.20-1.71). Miscarriage was associated with depression (pooled aOR 1.97, 95% CI 1.38-2.82) and anxiety disorder (pooled aOR 1.24, 95% CI 1.11-1.39). Sensitivity analyses excluding early pregnancy loss and termination reported similar results. Preterm birth was associated with depression (pooled aOR 1.37, 95% CI 1.32-1.42), anxiety disorder (pooled aOR 0.97, 95% CI 0.41-2.27) and post-traumatic stress disorder (PTSD) (pooled aOR 1.75, 95% CI 0.52-5.89). Caesarean section was not significantly associated with PTSD (pooled aOR 2.51, 95% CI 0.75-8.37). There were few studies on other mental disorders and therefore it was not possible to perform meta-analyses.

CONCLUSIONS

Exposure to complications during pregnancy and birth increases the odds of long-term depression, anxiety disorder and PTSD.

Parental Coping, Representations, and Interactions with Their Infants at High Risk of Cerebral Palsy

The aim of this study is to describe parental coping, representations, and interactions during the time of inclusion in the Small Step early intervention program for infants at high risk of cerebral palsy (CP) in Norway (ClinicalTrials.gov: NCT03264339). Altogether, 11 infants (mean age 4.8 months, SD: 1.5) and their parents (mothers: n = 10, fathers: n = 9) were included. Parental coping was assessed using the Parenting Stress Index-Short Form (PSI-SF) and the Hospital Anxiety and Depression Scale (HADS). Parental representations and parent-infant interactions were assessed using the Working Model of the Child Interview (WMCI) and the Parent-Child Early Relational Assessment (PCERA). Parents' PSI-SF and HADS scores were within normal range; however, 26.7% showed symptoms of stress, 52.6% showed symptoms of anxiety, and 31.6% showed symptoms of depression above the cut-off. WMCI results indicate that 73.7% of the parents had balanced representations. For PCERA, the subscale Dyadic Mutuality and Reciprocity was of concern, while two other subscales were in areas of strength and three subscales in some concern areas. There were no differences between mothers and fathers. Most of the parents had balanced representations, some had mental or stress symptoms and many were struggling with aspects of the parent-infant interaction. This knowledge could be useful when developing more family-centered interventions.

Parent-infant interaction quality is related to preterm status and sensory processing

BACKGROUND

Parent-infant interactions provide the foundation for the development of infant socioemotional wellbeing. Preterm birth can have a substantial, and often detrimental, impact on the quality of early parent-infant interactions. Sensory processing difficulties, common in preterm infants, are further associated with poorer interaction quality. There is a paucity of research, however, examining the links between the quality of parent-infant interaction, preterm birth, and sensory processing difficulties. This study aimed to characterise the quality of interactions of parent-infant dyads involving preterm infants who may display sensory processing differences and examine the associations between parent-infant interaction quality, preterm status and infant sensory processing.

METHOD

67 parent-infant dyads (12-months infant age, 22 preterm, 45 full-term) participated in a recorded, semi-structured 15-minute play interaction. Parents also filled out questionnaires on demographics, and infant sensory processing (Infant and Toddler Sensory Profile-2; ITSP-2). Interaction quality was rated using the Parenting Interactions with Children: Checklist of Observations Linked to Outcomes (PICCOLO).

RESULTS

Preterm and full-term infants differed in sensory processing and parent-infant interaction. Infant prematurity was associated with the sensory domains of; visual (r = - 0.37, p = .005), touch (r = - 0.39, p = .002), and movement (r_s = - .32, p = .01), as well as the interaction domains of; responsivity (r_s;= - .43, p = .001), teaching (r_s = - .31, p = .02), and interaction total score (r = - 0.34, p = .01). Interaction quality was related to sensory registration (r_s = - .38, p = .008), auditory (r_s = - .34, p = .02), seeking (r_s = .29, p = .05) and sensory behavioural scores (r_s = - .52, p < .001). Overall, interaction quality was best predicted by infant prematurity and auditory scores, R² = .15, F(1, 47) = 4.01, p = .02.

DISCUSSION

Preterm infants differed from their full-term peers in both their sensory processing and in their dyadic interactions with parents. Preterm status was associated with less responsivity and teaching and was found to predict overall interaction quality. Poorer infant sensory processing was associated with less parental teaching, affection and responsivity during interactions. Our results suggest that preterm birth is related to sensory processing difficulties, and that prematurity and sensory processing are differentially associated with aspects of interaction quality. These findings support the further examination of the interplay between preterm birth, sensory processing, and parent-infant interaction quality.

Maternal Mood and Perception of Infant Temperament at Three Months Predict Depressive Symptoms Scores in Mothers of Preterm Infants at Six Months

Postpartum depression is more prevalent in mothers and fathers of preterm infants compared to parents of full-term infants and may have long-term detrimental consequences for parental mental health and child development. The temperamental profile of an infant has been postulated as one of the important factors associated with parental depressiveness in the first months postpartum. This study aimed to examine the longitudinal relationship between depressive symptoms and perceived infant temperament at 3 months corrected age, and depressive symptoms at 6 months corrected age among mothers and fathers of infants born preterm. We assessed 59 families with infants born before the 34th gestational week using the Edinburgh Postnatal Depression Scale (EDPS) and the Infant Behavior Questionnaire-Revised. We found that mothers’ scores on EPDS and infants’ Orienting/regulation at 3 months corrected age predicted mothers’ EPDS scores at 6 months corrected age. In particular, higher depressive scores were related to higher depressive symptoms at 6 months corrected age, whereas higher infant Orienting/regulation was related to lower depressive symptoms at 6 months corrected age. Due to the low internal consistency of EPDS at 6 months for fathers, we were unable to conduct similar analyses for fathers. Our results point to the importance of considering both early indices of maternal mood as well as mother-reported measures of preterm infant temperament in the attempts to predict levels of maternal depressiveness in later months of an infant’s life. Further studies are urgently needed in order to better understand the associations between depressiveness and infant temperament in fathers, and with more consideration for the severity of the effects of infant prematurity.

Prevalence of anxiety and post-traumatic stress (PTS) among the parents of babies admitted to neonatal units: A systematic review and meta-analysis

BACKGROUND

Parents of babies admitted to neonatal units (NNU) are exposed to a range of potentially distressing experiences, which can lead to mental health symptoms such as increased anxiety and post-traumatic stress (PTS). This review aimed to describe how anxiety and PTS are defined and assessed, and to estimate anxiety and PTS prevalence among parents of babies admitted to NNU.

METHOD

Medline, Embase, PsychoINFO, Cumulative Index to Nursing and Allied Health literature were searched to identify studies published prior to April 14, 2021. Included studies were assessed using Hoy risk of bias tool. A random-effects model was used to estimate pooled prevalence with 95% CIs. Potential sources of variation were investigated using subgroup analyses and meta-regression. The review is registered with PROSPERO (CRD42020162935).

FINDINGS

Fifty six studies involving 6,036 parents met the review criteria; 21 studies assessed anxiety, 35 assessed PTS, and 8 assessed both. The pooled prevalence of anxiety was 41.9% (95%CI:30.9, 53.0) and the pooled prevalence of PTS was 39.9% (95%CI:30.8, 48.9) among parents up to one month after the birth. Anxiety prevalence decreased to 26.3% (95%CI:10.1, 42.5) and PTS prevalence to 24.5% (95%CI:17.4, 31.6) between one month and one year after birth. More than one year after birth PTS prevalence remained high 27.1% (95%CI:20.7, 33.6). Data on anxiety at this time point were limited. There was high heterogeneity between studies and some evidence from subgroup and meta-regression analyses that study characteristics contributed to the variation in prevalence estimates.

INTERPRETATION

The prevalence of anxiety and PTS was high among parents of babies admitted to NNU. The rates declined over time, although they remained higher than population prevalence estimates for women in the perinatal period. Implementing routine screening would enable early diagnosis and effective intervention.

FUNDING

This research is funded by the National Institute for Health Research (NIHR) Policy Research Programme, conducted through the Policy Research Unit in Maternal and Neonatal Health and Care, PR-PRU-1217-21202. The views expressed are those of the author(s) and not necessarily those of the NIHR or the Department of Health and Social Care.

Social cognition following preterm birth: A systematic review

Social cognitive abilities are affected by preterm birth, but pathways to, and risk factors for this outcome are not well mapped. We examined direct assessment tasks including objective coding of parent-child play to chart social development in infancy and pre-school years. A systematic search and data-extraction procedure yielded seventy-nine studies (4930 preterm and 2109 term children, aged birth - five years), for inclusion. We detected a pattern of reduced social attention in the first 12 months of life with evidence of reduced performance in social cognitive tasks later in the preschool years. However, we did not identify a consistent, distinctive preterm social phenotype in early life. Instead, the interactive behaviour of preterm infants reflects factors from outside the social cognitive domain, such as attention, language, and socioeconomic status. By combining data across samples and measures we revealed the role of domain-general skills, which may in future prove fruitful intervention targets.

Perinatal risk factors and reactive attachment disorder: A nationwide population-based study

AIM

To examine the association between several perinatal and obstetric risk factors and reactive attachment disorder in children diagnosed in specialised services.

METHODS

In this nested case-control study, 614 cases with reactive attachment disorder and 2423 controls matched with age and sex were identified from Finnish national registers. Conditional logistic regression was used to examine the association between a number of perinatal risk factors and reactive attachment disorder.

RESULTS

In the adjusted analysis, a low birthweight of <2500 g was associated with an increased odds of reactive attachment disorder, with an odds ratio (OR) of 1.96 and 95% confidence interval (CI) of 1.17, 3.30 and a birthweight of 4000-4499 grams was associated with decreased odds OR 0.49 (95% CI 0.31, 0.75). The odds for being diagnosed with reactive attachment disorder increased with a gestational age of <32 weeks OR 3.72 (95% CI 1.52, 9.10), induced labour OR 1.34 (95% CI 1.03, 1.75) and monitoring in a neonatal intensive care unit (NICU) OR 1.67 (95% CI 1.09, 2.55).

CONCLUSION

We found associations between low birthweight, preterm birth, NICU admission and reactive attachment disorder. The findings add to the current literature on the understanding of the development of reactive attachment disorder in children.

Do early parental postnatal depression, attachment style and perceived social support affect neurodevelopmental outcomes of premature infants?

BACKGROUND

The birth of a premature infant is both a stressful event for both parents and associated with an increased rate of postnatal depression (PND). Additionally some mothers may have delayed feelings of attachment to their babies because of the medical procedures or possible medical complications. Social support is known as an important factor for well-being in the postnatal period. However there is scarce data about these factors for fathers. We aimed to identify the impact of parental PND, attachment style and social support on premature infant development considering the prematurity degree and risk groups.

METHODS

This prospective study was conducted by including 96 infants who were born preterm. Mothers and fathers were given Edinburgh Postnatal Depression Scale (EPDS), Adult Attachment Style Scale (AASS), and Multidimensional Scale of Perceived Social Support (MSPSS) to fill out when their infants' corrected age was 3 months. The developmental evaluation was conducted with Bayley III at the corrected 6 months and 18 months of age.

RESULTS

Postnatal depression scores were more in mothers than fathers, the rates of secure attachment and social support were similar between mothers and fathers. Factors associated with the neurodevelopmental outcomes including prematurity degree and risk groups, EPDS, AASS and MSPSS scores were analyzed for both parents. In multivariate analysis, fathers' depression scores were inversely associated with cognitive development (p = 0.030, R² = 0.080, B=-0.283) and mothers' anxious/ambivalent attachment style was inversely associated with language development (p = 0.011, R² = 0.108, B=-0.329) at the age of corrected 6 months old.

CONCLUSIONS

Our findings underscore that the efforts to improve developmental outcomes of premature infants should include parental well-being taking into account new fathers' depressive symptomatology and maternal anxious/ambivalent attachment.

Do developmental and temperamental characteristics mediate the association between preterm birth and the quality of mother-child interaction?

BACKGROUND

The current study aims to evaluate the association between preterm birth and the quality of mother-child interaction of very preterm-, moderate preterm-, and full-term-born children at 18 and 36 months and to determine whether developmental and behavioral characteristics mediate the association between preterm birth and the quality of mother-child interaction.

METHOD

Participants included 110 preterm-born children and 39 full-term-born children assessed at ages 18 and 36 months. Mother-child free play interactions, the Mullen Scales of Early Learning, the Infant Behavior Questionnaire, and the Early Childhood Behavior Questionnaire were administered.

RESULTS

Significant associations between preterm birth and the quality of mother-child interaction were found at 18 and 36 months. The mother-child interaction quality was less optimal for the preterm-born children compared with the full-term-born children, mainly so for the very preterm-born children. Unlike behavioral characteristics, cognitive development was found to mediate the association between the gestational age-based group and the quality of mother-child interaction.

CONCLUSIONS

Intervention programs for preterm-born children and their families, should consider maternal and children's behaviors during mother-child interactions, in addition to cognitive, language, motor and emotional regulation abilities, and particularly so with very preterm-born children, who exhibit slower cognitive development.

A Qualitative Study of the Experiences of Norwegian Parents of Very Low Birthweight Infants Enrolled in a Randomized Nutritional Trial

PURPOSE

The aim of this study was to examine how parents of very low birth weight (VLBW) infants experienced having their newborn infant enrolled in a randomized controlled intervention trial (RCT).

DESIGN AND METHODS

A qualitative descriptive design was used. Data were collected through individual semi-structured interviews with 15 parents of 9 participating VLBW infants. The data were then made the object of an inductive qualitative content analysis.

RESULTS

The parents expressed trust in the competence and motivation of the researchers and were confident that participating in the project would do no harm, but instead would potentially benefit their infant. The parents felt privileged for being given the chance to participate, to commit to the project; they were willing to invest their time and effort in the project. Participation could be stressful for the parents, ranging from minor irritation to situations in which they felt overwhelmed and not entirely in control. Many families lived stressful lives, and participation, particularly the follow-up after being discharged, may have added to this.

CONCLUSIONS

Infant participation in an RCT can be a positive experience, making the parents feel that they are given a chance to both contribute and receive something special. Participation can also be stressful because of conditions both related and unrelated to the RCT.

PRACTICE IMPLICATIONS

We identified several issues that researchers in future trials with VLBW infants need to address to minimize parental stress. Recruitment to intervention studies within the immediate period around birth should be avoided, if possible.

Hope in Parents of Very-Low Birth Weight Infants and its Association with Parenting Stress and Quality of Life

PURPOSE

Being a parent of a very-low-birth-weight (VLBW) infant can be stressful. We aimed to describe parental hope 42months after the birth of a VLBW infant and determine whether there is an association between hope and parenting stress with quality of life (QoL), respectively.

DESIGN AND METHODS

Fifty-nine parents of VLBW infants completed questionnaires about hope, parenting stress and QoL. Pearson correlation coefficients (r) and linear regression models were used to examine the relationship between the selected variables. To compare groups, t-test was used and Cohen's d for effect size was calculated.

RESULTS

Parents of VLBW infants were more hopeful than the general population (p<0.001). Parenting stress and hope were both independently associated with QoL (p<0.001). The subgroup of parents of infants with birth weight <1000g had less hope (p=0.041) and higher parenting stress (p=0.041) than parents of infants with birth weight 1000-1500g.

CONCLUSIONS

Hope and parenting stress were both independent determinants of QoL. Parents of the presumably sickest infants had less hope and higher parenting stress than parents of VLBW infants with a birth weight over 1000g. Hope should be further explored as a coping mechanism in parents of VLBW infants.

PRACTICE IMPLICATIONS

The clinical implications of the strong association between hope, parenting stress and QoL remain to be determined, but reducing stress and strengthening hope seem to be important. This should be taken into account both at hospital discharge and at follow-up, especially for lower-birth-weight infants.

Maternal resolution of preterm birth from 1 to 18 months

Preterm birth can be traumatic for some mothers, involving feelings of grief over the hoped-for full-term pregnancy. In this longitudinal study, we interviewed 50 mothers of preterm infants, using the reaction to diagnosis interview when their child was 1 month and 18 months old. We examined change and stability in resolution status over time. Additionally, we explored possible predictors of resolution trajectories between 1 and 18 months. Findings indicated that resolution at 1 month was not yet common. The rate of resolution at 18 months was 62.6%, compared with 38.2% at 1 month. Prenatal precursors of preterm birth, lower medical neonatal risk, and lower maternal stress at 1 month significantly differentiated mothers who attained resolution as early as at 1 month from those who were unresolved at 1 and 18 months. Lower maternal stress at 1 month was the only predictor that significantly differentiated initially unresolved mothers who later attained resolution from those who remained unresolved at 18 months. Discussion focuses on maternal stress, which may mark a subgroup of mothers of preterm infants who are at risk of being unresolved through the first 18 months, and who may benefit from resolution-focused intervention.