Exposición a temperaturas extremas y su efecto en la gestación en un departamento de Colombia / Exposure to extreme temperatures and its effect on pregnancy in a department of Colombia

Introducción: Diversas investigaciones han establecido la relación entre temperatura y duración del embarazo, la exposición a temperaturas altas durante el embarazo plantea interrogantes en especial el papel que esta juega frente a los partos prematuros y partos de bajo peso, es indispensable determinar si las temperaturas altas o bajas tienen un comportamiento protector o de riesgo sobre el feto durante la gestación en regiones tropicales. Objetivo: describir la relación entre la exposición a temperaturas altas y bajas durante el embarazo y su efecto en la edad gestacional y peso al momento del parto en los recién nacidos del departamento del Guaviare-Colombia. Metodología: Estudio tipo observacional, analítico, retrospectivo de corte transversal que busco determinar la relación entre exposición a temperaturas altas y bajas durante el embarazo y su efecto en la edad gestacional y peso al momento del parto en los recién nacidos, el universo estuvo conformado por 10.137 nacidos vivos, de los cuales 9.932 cumplieron los criterios de inclusión. Se determinó Odds Ratio para estimar la asociación entre las variables. Resultados: Dentro de la semana de retraso 3 el estar expuesto a temperaturas máximas percentil 90 es un factor protector para la ganancia ponderal de peso OR < 1, la exposición a temperaturas mínimas percentil 10 se asoció como factor protector para el parto prematuro en la semana de retraso 1 y 2 OR < 1.Conclusión: A pesar del beneficio de las altas y bajas temperaturas durante el embarazo en la ganancia ponderal de peso y disminución del parto prematuro, es recomendable prevenir la exposición a temperaturas extremas durante el periodo de gestación[AU]

Introduction: Various investigations have established the relationship between temperature and duration of pregnancy. Exposure to high temperatures during pregnancy raises questions, especially the role it plays in premature births and low-weight births. It is essential to determine whether high temperatures or low have a protective or risky behavior on the fetus during pregnancy in tropical regions.Objective: to describe the relationship between exposure to high and low temperatures during pregnancy and its effect on gestational age and weight at the time of delivery in newborns in the department of Guaviare-Colombia.Methodology:Observational, analytical, retrospective cross-sectional study that sought to determine the relationship between exposure to high and low temperatures during pregnancy and its effect on gestational age and weight at the time of delivery in newborns. The universe was made up of 10,137 births. alive, of which 9,932 met the inclusion criteria. Odds Ratio was determined to estimate the association between the variables.Results:Within the 3rd week of delay, being exposed to maximum temperatures at the 90th percentile is a protective factor for weight gain OR < 1, exposure to minimum temperatures at the 10th percentile was associated as a protective factor for premature birth in the week. of delay 1 and 2 OR < 1. Conclusion: Despite the benefit of high and low temperatures during pregnancy in weight gain and reduction in premature birth, it is advisable to prevent exposure to extreme temperatures during the gestation period[AU]

Introdução: Várias investigações estabeleceram a relação entre temperatura e duração da gravidez. A exposição a altas temperaturas durante a gravidez levanta questões, especialmente o papel que desempenha nos partos prematuros e nos nascimentos de baixo peso. É essencial determinar se as temperaturas altas ou baixas têm um comportamento protetor ou de risco para o feto durante a gravidez em regiões tropicais. Objetivo:descrever a relação entre a exposição a altas e baixas temperaturas durante a gravidez e seu efeito na idade gestacional e no peso no momento do parto em recém-nascidos no departamento de Guaviare-Colômbia. Metodologia: Estudo observacional, analítico, retrospectivo e transversal que buscou determinar a relação entre a exposição a altas e baixas temperaturas durante a gravidez e seu efeito na idade gestacional e no peso no momento do parto em recém-nascidos. O universo foi composto por 10.137 nascimentos. vivos, dos quais 9.932 preencheram os critérios de inclusão. O Odds Ratio foi determinado para estimar a associação entre as variáveis. Resultados:Na 3ª semana de atraso, a exposição a temperaturas máximas no percentil 90 é fator de proteção para ganho de peso OR < 1, a exposição a temperaturas mínimas no percentil 10 foi associada como fator de proteção para parto prematuro na semana. de atraso 1 e 2 OR < 1.Conclusão:Apesar do benefício das altas e baixas temperaturas durante a gravidez no ganho de peso e redução do parto prematuro, é aconselhável evitar a exposição a temperaturas extremas durante o período de gestação[AU]

Exploring the mystical relationship between the Moon, Sun, and birth rate.

OBJECTIVE: The Moon has a noticeable influence on the Earth due to its gravity, the most visible manifestation of which are tides. We aimed to see if the Moon's daily cycle, like the Sun's, affects the prevalence and incidence of childbirth. METHODS: In this retrospective cohort study, we examined all deliveries at the Academic Hospital of Udine between 2001 and 2019. All consecutive singleton pregnancies with spontaneous labor and vaginal delivery were included. RESULTS: During the period, 13,349 singleton pregnancies with spontaneous labor and vaginal delivery were delivered in 6939 days. A significantly higher prevalence of deliveries was found with the Moon above the horizon (50.63% vs. 49.37%, p < 0.05). Moreover, during the day, there was a significantly higher prevalence of deliveries than during nighttime (53.74% vs. 45.79%, p < 0.05). Combining the Moon and Sun altitude, the majority of deliveries were registered when both were above the horizon (27.39% vs. 26.13%, 23.25%, or 23.24%, p < 0.05). These findings were confirmed in multivariate analysis after adjusting for parity, gestational age, or season. We found no correlation between birth and the Moon phase. CONCLUSIONS: Our data support the interaction of the Moon and the Sun in determining the time of birth. More research is needed to understand these phenomena and improve our understanding of labor initiation mechanisms.

Comparative assessment of birth preparedness and complication readiness among couples in rural and urban communities of Ekiti State, Southwestern Nigeria.

Objectives: To assess and compare the level of Birth Preparedness and Complications Readiness (BPCR) and determine the predicting effect of socio-demographic factors on it among couples in rural and urban communities of Ekiti State. Design: A community-based comparative cross-sectional study. Setting: The study was conducted in twelve rural and twelve urban communities in Ekiti State. Participants: Couples from rural and urban communities. Female partners were women of reproductive age group (15-49 years) who gave birth within twelve months before the survey. Main outcome measures: Proportion of couples that were well prepared for birth and obstetric emergencies, and its socio-demographic determinants. Results: The proportion of couples that were well prepared for birth and its complications was significantly higher in urban (60.5%) than rural (48.4%) communities. The study also revealed that living above poverty line (95% CI=1.01-3.79), parity and spousal age difference less than five years (95% CI=1.09 - 2.40) were positive predictors of BPCR among respondents. Conclusions: Urban residents were better prepared than their rural counterparts. Living above poverty line, parity, and spousal age difference less than five years were positive predictors of BPCR. There is a need to emphasize on educating couples on the importance of identifying blood donors as a vital component of BPCR. Funding: None declared.

Postnatal social support experiences in primiparous women in Korea: a phenomenological study.

PURPOSE: Social support is essential for postpartum well-being, but little is known about the postpnatal social support preferred by primiparous women. This study aimed to comprehensively understand and describe the meaning of postnatal social support experience in primiparous women. METHODS: The participants were seven primiparous women who were within 1 year after childbirth, recruited through purposive and snowball sampling from an online parenting community. The data were collected through in-depth interviews from November 14 to 28, 2022. Participants were interviewed face-to-face or via phone or online platform, according to their choice. Colaizzi's phenomenological qualitative research method was applied to analyze the meaning of the participants' experience. RESULTS: Five theme clusters and fourteen themes were identified from the data. The five theme clusters are as follows: (1) Shortcomings of the childbirth and postpartum care system I learned through my experience; (2) Government policies focusing on childbirth and child-rearing rather than postpartum recovery; (3) Driving force of postpartum recovery: Shared childbirth process; (4) Childcare on my own; and (5) Conflicted between being a stay-at-home mom and a working mom under inadequate maternity protection policies. CONCLUSION: Despite postpartum support from the government that was perceived as inadequate, first-time mothers regained confidence and motivation for parenting with the help of family, peers, and social networks. First-time mothers need support from professionals and reliable online communities for postpartum recovery and parenting.

The effects of online pilates on the mood and fear of birth of pregnant women: a randomized controlled study.

The Pilates exercise method is applied online to various population groups. This study aimed to determine the effect of online Pilates exercises on depression, anxiety, and fear of childbirth in pregnant women. Our randomized controlled study divided participants into the online pilates group (OPG) and the control group (CG). Pilates exercises were applied to the OPG according to the American College of Obstetricians and Gynecologists guidelines, while the CG was given a home program. Assessments were made before and after the training. All measurements improved after Online Pilates (p < 0.05), while there was no change in the control group (p > 0.05). While initial measurement values were similar in both groups (p > 0.05), a statistical difference was observed in favor of OPG with a moderate effect percentage in all results after training (p < 0.05). These results revealed that eight weeks of online Pilates training could effectively reduce depression, anxiety, and fear of childbirth.Trial registration:Clinical trial registry: NCT05305716.

Childbirth preparation and its facilitating and inhibiting factors from the perspectives of pregnant and postpartum women in Tabriz-Iran: a qualitative study.

BACKGROUND: The World Health Organization recognizes childbirth preparation as an essential component of antenatal care, as it plays a crucial role in reducing maternal mortality and improving women's childbirth experience. Countries worldwide have implemented various interventions to assist women in preparing for childbirth, based on their own resources. This study was conducted with the aim of exploring the perspectives of pregnant and postpartum women on childbirth preparation and the facilitating and inhibiting factors, in Tabriz, Iran. METHODS: This qualitative study was conducted with 25 participants, selected purposively among pregnant women in weeks 37 to 40 of gestation and postpartum women within 10 days to 6 weeks after childbirth. Data collection was done through semi-structured, in-depth individual interviews using an interview guide. The data was analyzed using content analysis method with conventional approach. RESULTS: The perspectives of pregnant and postpartum women regarding childbirth preparation revealed that factors such as maternal health during pregnancy, having an antenatal care plan, improving health literacy, and developing a birth plan were identified as crucial elements for effective childbirth preparation. Additionally, mental and emotional preparation, support, financial planning, participation in preparation classes, and awareness of childbirth methods were recognized as facilitators. On the other hand, insufficient mental and emotional preparedness, inadequate support, weak antenatal care, information deficiencies, insufficient physical activity, and a lack of a birth plan were identified as barriers. CONCLUSION: The findings highlight the multifaceted nature of childbirth preparedness, necessitating the involvement of families, the healthcare system, and the entire community. Utilizing the study results in strategic planning for pre-pregnancy, during pregnancy, and inter-pregnancy care can enhance childbirth preparedness and contribute to achieving Iran's population rejuvenation policy goals.

Prevalence and factors associated with unskilled childbirth attendance in Guinea: Analysis of the 2018 Demographic and Health Survey.

This study aimed to analyze the prevalence and factors associated with the unassisted delivery by qualified health personnel in the Republic of Guinea, based on data from the 2018 demographic and health survey. Multivariate logistic regression was used to identify the associated factors. The prevalence of unassisted delivery was 40.8%; it was 38.4% in rural areas and 2.3% in urban areas. Factors associated with this type of delivery included the performance of no ANC (ORa = 6.19 IC95%: [4.86 - 7.87], p<0.001) and those who had performed one to three ANC (ORa =1.75 IC95%: [1.49 - 2.05], p<0.001) the perception of the distance to the health institution as a problem (ORa =1.28 IC95%: [1.10 - 1.48], p<0.001), belonging to the poor wealth index (ORa = 2.77 IC 95%: [2.19 - 3.50], p<0.001) and average (ORa = 2.01 IC95%: [1.57 - 2.57], p<0.001), the fact of residing in the region of Faranah (ORa = 2.24 IC95%: [1.37 - 3.65], p<0.001) and rural areas (ORa = 4.15 IC95%: [3.10 - 5.56], p<0.001). Strengthening community awareness, making functional ambulances available to rural health centers and making prenatal care inputs available in health institutions would help to reduce the scale of unassisted deliveries in the Republic of Guinea.

Cette étude visait à analyser la prévalence et les facteurs associés à l'accouchement non assisté par un personnel de santé qualifié en Guinée, partant des données de l'enquête démographique et de santé de 2018. La régression logistique multivariée a servi à identifier les facteurs associés. La fréquence de l'accouchement non assisté était de 40.8% ; elle était de 38.4% en milieu rural et 2.3% en milieu urbain. Les facteurs associés à ce type d'accouchement comprenaient la réalisation d'aucune CPN (ORa =6.19 IC95% : [4.86 - 7.87], p<0.001) et celles qui avaient réalisées une à trois CPN (ORa =1.75 IC95% : [1.49 - 2.05], p<0.001) la perception de la distance pour la structure de santé comme un problème (ORa =1.28 IC95% : [1.10 - 1.48], p<0.001), l'appartenance à l'indice de richesse pauvre (ORa =2.77 IC95% : [2.19 - 3.50], p<0.001) et moyenne (ORa =2.01 IC 95% : [1.57 - 2.57], p<0.001), le fait de résider dans la région de Faranah (ORa =2.24 IC95% : [1.37 - 3.65], p<0.001) et rurale (ORa =4,15 IC 95% : [3,10 - 5,56], p<0,001). Le renforcement de la sensibilisation communautaire, la mise d'ambulances fonctionnelles à la disposition des centres de santé ruraux et rendre disponible les intrants de soins prénatals dans les structures sanitaires contribueraient serte à réduire l'ampleur des accouchements non assistés en Guinée.

Salivary oxytocin changes and effect of the season in sows kept in different farrowing systems: Farrowing crate and farrowing pen with temporary crating.

Alternative farrowing systems that have been developed in recent years could have a positive effect on the welfare of sows during farrowing and lactation. Oxytocin measurements in saliva may provide information about positive animal welfare status. The purpose of this study was to evaluate the changes in salivary oxytocin concentrations in sows during the lactation period in three different farrowing systems and in two different seasons. Crossbred Duroc sows (n = 34, average parity = 3.6 ± 1.80) were housed in conventional farrowing crates (FC) (n = 10) or in farrowing pens with temporary crating (TC), including SWAP (n = 12) and JFL15 (n = 12) in two different seasons: summer and winter. Saliva samples were collected for six days during lactation: days 2, 4, 12, 23, 25 (i.e., 1-day post-weaning) and 26 (i.e., 2-day post-weaning) after farrowing. Moreover, behavioral data from sows was recorded on days 2, 4, 12 and 23 after farrowing, using a 30-s scan sampling method for 3 min per pen to record the behaviors which were assessed by the same observer. The results showed that the salivary oxytocin concentrations were 472.5 pg/mL and 399.4 pg/mL higher in both TC (SWAP and JLF15, respectively) than in the FC in early-lactation period, and these differences were more pronounced in summer and at the end of lactation in winter. In terms of behavior, higher number of mother-young interactions were observed in TC than FC in early- and mid-lactation period. In conclusion, TC is associated to a higher salivary oxytocin concentration that could indicated an increased mother-young interaction, although oxytocin concentration can be influenced by other factors, such as season or day of lactation.

Fathers' involvement in pregnancy and childbirth in Africa: an integrative systematic review.

BACKGROUND: As notions of masculinity evolve globally, it is important to understand their dimensions within geographic regions and life contexts. African men's involvement in their partners'pregnancy and childbirth has been explored to a limited extent in the peer-reviewed literature. This analysis provides a comprehensive examination of the existing literature on the diverse experiences of fathers across the African continent. AIM: This study aims to provide an overview of fathers' experience of involvement in their partners' pregnancies andchildbirth in Africa. METHODS: A systematic integrative literature review guided the process. The review comprised problem identification, literature search, data evaluation, data analysis and presentation of results. Systematic searches were conducted in the Cinahl, PubMed and Scopus databases. RESULTS: The search identified 70 articles of which 31, relating to 11 African countries, were used. Of these, 20 were qualitative, 9 were quantitative and 2 were mixed-methods studies. Men's alienation from health services, and traditional gender norms that discourage fathers' supportive role during pregnancy were prevalent themes. Financial pressures also dominated fathers'experiences. At the same time, in 18 studies fathers expressed motivation to be involved partners and supportive fathers, despite stigma and exclusion from maternity services. CONCLUSION: This integrative review shows that fathers' experiences of their involvement in their partners' pregnancy and childbirth across African countries are influenced by multiple factors. While unwelcoming health services, traditional gender norms, and low income are barriers to male involvement, education, younger age, and modern gender norms are associated with greater male involvement.

Main findings: There is a diversity of experiences among fathers across the African continent, with healthcare system alienation, influential gender norms, and financial pressure being common themes.Added knowledge: Unwelcoming health services, traditional gender norms, and low income were found to be impediments to male involvement in their partners' pregnancy and childbirth, while education, younger age, and modern gender norms were associated with greater male involvement.Global health impact for policy and action: Information and education for men and conducive healthcare environments would enable more positive experiences for men and encourage their greater involvement.

Pregnant women autonomy when choosing their method of childbirth: Scoping review.

This paper has as its theme the autonomy of pregnant women in relation to choosing the method of birth for their child. The objective was to carry out a scoping review to study the literature and evidence of how autonomy is being offered to parturient women. Study design and location: In October 2023, a search was carried out using the terms "pregnant women" AND "delivery" AND "autonomy" in the following databases: PubMed, Web of Science, Scopus, Scielo and LILACS. The search included articles from 2016 to 2023. Of the 179 articles found, 15 met the criteria and were selected for this review. Results: the pregnant woman's autonomy in choosing the method of childbirth is influenced by several factors, such as the obstetrician's recommendation, the medical team, and negative and positive experiences. Thus, when this autonomy is shared with the obstetrician, the obstetrician recommends cesarean section as the safest route, but does not explain the benefits and harms of both routes (vaginal and cesarean section), causing the woman to accept the cesarean section. Midwives recommend vaginal birth because they believe it to be natural and safe and explain the benefits and harms of both methods, respecting the pregnant woman's choice of the method she prefers. Conclusion: women have the fundamental right to choose their method of birth and must be properly guided throughout prenatal care, whether by an obstetrician or a midwife, about the options, risks and benefits of each method of childbirth, respecting the ethical principle of beneficence.

Depresión puerperal: impacto en la madre gestante y en el desarrollo físico, emocional y cognitivo posnatal de sus hijas/os. Una mirada ecológica / Postpartum depression: Impact on pregnant women and the postnatal physical, emotional, and cognitive development of their children. An ecological perspective

Los problemas de salud mental materna durante el embarazo, parto y puerperio son un desafío para la salud pública. Su falta de reconocimiento atenta contra el diagnóstico y tratamientos oportunos, e impacta en la madre y el establecimiento del vínculo fundamental del binomio. Debemos reconocer los factores de riesgo (edad, situación socioeconómica, antecedentes psicopatológicos, disfunción familiar, entorno desfavorable), las manifestaciones clínicas y las herramientas de detección. Existen evidencias de que el efecto del estrés, la ansiedad y la depresión durante el embarazo afectan negativamente el neurodesarrollo fetal y condicionan los resultados del desarrollo infantil. Describimos el impacto negativo de la depresión puerperal durante los primeros meses de vida, que afecta el vínculo madre-hija/o, el desarrollo posnatal (emocional, conductual, cognitivo, lenguaje) y el mantenimiento de la lactancia materna. También reconocemos factores protectores que atemperan sus efectos. Es fundamental establecer estrategias preventivas y abordajes diagnósticos y terapéuticos interdisciplinarios para minimizar los riesgos sobre la madre y sus hijas/os.

Maternal mental health problems during pregnancy, childbirth, and the postpartum period are a challenge for public health. Not recognizing them hinders a timely diagnosis and treatment and has an impact on the mother and the establishment of the fundamental bond of the mother-child dyad. We must recognize the risk factors (age, socioeconomic status, mental health history, family dysfunction, unfavorable environment), clinical manifestations, and screening tools. There is evidence that the effect of stress, anxiety, and depression during pregnancy negatively affect fetal neurodevelopment and condition child developmental outcomes. Here we describe the negative impact of postpartum depression during the first months of life, which affects mother-child bonding, postnatal development (emotional, behavioral, cognitive, language), and the maintenance of breastfeeding. We also recognize protective factors that mitigate its effects. It is essential to establish preventive strategies and interdisciplinary diagnostic and therapeutic approaches to minimize the risks to the mother and her children.

The contribution of birth plans to shared decision-making from the perspectives of women, their partners and their healthcare providers.

BACKGROUND: The birth plan is a document expressing a pregnant woman's childbirth preferences, enabling communication of expectations and facilitating discussions among women, their partners, and healthcare providers for key birthing decisions. There has been limited research on the role of birth plans in shared decision-making (SDM). Our study aims to explore how the use of birth plans can contribute to SDM from women's, partners, and healthcare providers' perspectives. METHODS: We conducted in-depth interviews with women, their partners, and their healthcare providers. We used a thematic analysis to identify themes and subthemes. Furthermore, we created a grounded theory about the role of birth plans as a tool in SDM. RESULTS: Three main themes were created: ''Creating a birth plan", ''Getting all on board" and ''Birth plans in the daily practice of decision-making". Most women, partners, and healthcare providers agreed that birth plans can facilitate communication and SDM. Women and their partners viewed the birth plan as a tool to prepare for birth. Most healthcare providers mentioned the birth plan as a tool to get to know the women, their partners, and their preferences. Barriers are the attitude of healthcare providers toward birth plans, such as their evident resistance to the birth plan itself or to certain preferences. Another barrier is the assumption women and their partners may have that these plans can accurately predict the childbirth experience, enhancing the chance of a disappointing, negative experience. Some healthcare providers view birth plans as barriers to SDM. CONCLUSION: The use of a birth plan seems to promote women's, partners', and healthcare providers' involvement in the birth process, and seems suitable to facilitate SDM. Further research is required to explore strategies for overcoming barriers, including healthcare providers' attitudes toward birth plans and the expectations of women and their partners regarding their role.

[Behavior of the mare during parturition - a literature review]. / Verhalten der Stute in der Geburt ­ eine Literaturübersicht.

In horses, parturition is characterized by the fact that any delays may rapidly result in the death of the foal. Therefore, birth monitoring and the rapid detection of dystocia are of great importance. For this purpose, the differentiation between behavior associated with physiological parturition and activities related to difficult parturition is important. The aim of this publication is to present the physiological behavior of mares during parturition on the basis of a literature review. The behavior of mares in the opening phase of parturition is highly individual. In general, it is characterized by an increase in movement activity. In this phase of parturition, 13 different behaviors have been described (e. g. lying down and standing up, cessation of feed intake, local sweating, frequent defecation and urination). Mares show a more uniform pattern of behavior in the expulsion phase and the following phase of expulsion of the fetal membranes and placenta. More than 95% of mares give birth in the lateral position. A mare usually remains in recumbency for several minutes following the expulsion of the fetus. Immediately after standing up, the mare begins to intensely interact with the foal. The expulsion of the fetal membranes and the placenta usually takes place in a standing position. From a clinical point of view, it is important to give consideration to the difficulty in recognizing the opening phase of parturition due to the mares' individual behavior patterns.

The relationship between traumatic childbirth and first-time mothers' social identity and wellbeing: a cross-sectional observational study.

BACKGROUND: Experiencing childbirth as traumatic is common and can have long-lasting negative consequences for women's mental health. However, fostering a sense of social identity has been shown to protect psychological wellbeing and mental health during life transitions, such as entering parenthood. This study therefore investigated the relationship between traumatic childbirth and first-time mothers' social identity and their psychological wellbeing, and more specifically whether strength of identity as a first-time mother protected psychological wellbeing following traumatic childbirth. METHOD: Women over the age of 18 who were living in the UK and had given birth to their first child in the past nine months were recruited to the study from clinical and community settings. They completed digital self-report questionnaires about their birth experience, social identity, mental health, and psychological wellbeing. Women who perceived themselves to have had a traumatic birth (the trauma group; N = 84) were compared to women who did not perceive themselves to have had a traumatic birth (the control group, N = 39). T-tests and chi square tests assessed preliminary group differences before multivariate analyses of covariance controlled for covariates. Post-hoc tests identified the direction of differences. Multiple regression and moderation analyses analysed interaction effects. RESULTS: The trauma group had significantly lower psychological wellbeing (mean = 41.5, 95% CI [39.4-43.7], p = .008, partial η2 = 0.059), compared to the control group (mean = 48.4, 95% CI [45.3-51.5]), but the two groups did not differ in the strength of their first-time mother identity, which was high across both groups. Strength of identity did not moderate the relationship between traumatic childbirth and psychological wellbeing. Giving birth by caesarean section independently reduced the strength of the first-time mother identity (p = .017, partial η2 = 0.049). All analyses controlled for emotional and practical support, perceptions of healthcare staff, and mode of birth. CONCLUSIONS: Having a traumatic birth was associated with lower psychological wellbeing, and the strength of first-time mother identity does not appear to moderate this relationship. Factors such as mode of birth may be more important. Further research, including longitudinal designs, is needed to understand the relationship between these constructs and identify more effective ways of protecting first-time mothers' mental health.

Impact of farrowing system and prepartum nest-building material on nest-building behaviour and farrowing in sows.

Farrowing crates are widely used as the main housing system for farrowing and lactating sows on commercial farms although they have a negative impact on sow welfare and behaviour. One of the main reasons for using farrowing crates is to reduce piglet mortality during farrowing and lactation. We compared the effects of temporary crating (TC) versus free farrowing (FF) with different nest-building materials on production and welfare measures. Sows were investigated using a 2 × 3 factorial design. Sows were allocated to two farrowing treatments: FF sows were not crated around farrowing, and TC sows were crated from 2 days before expected farrowing until 3 days after farrowing, when the crate was opened. In both farrowing treatments, the nest-building material was given from 7 days prior to farrowing as follows: (1) 1 L of straw twice per day, (2) 1 sheet of newspaper twice per day or (3) fastened jute fabric to the farrowing crate. The study consisted of two parts; part 1 included a total of 87 sows for data on piglet mortality and growth, and part 2 included data on nest-building and farrowing behaviour from a subset of these sows (n = 34). Farrowing treatment affected piglet mortality; FF sows had a lower number of stillborn piglets than TC sows (P = 0.04), but the number of crushed piglets was higher (P < 0.01). Nest-building material tended to have an impact on total number of crushed piglets (P = 0.08) and piglets that died during 3 days of lactation (P = 0.09). Litter growth was better in the FF group than in the TC group from piglet age of 1 day to 3 weeks (P = 0.04). Overall, little nest-building-related behaviour occurred, probably due to the small amount of nest-building material. The usability of the nest-building material varied with farrowing treatment; FF sows used newspaper most for nest-building, while TC sows used straw and jute fabric (P = 0.01). There were no differences in the piglet birth intervals or the farrowing duration. In conclusion, free farrowing can have positive effects on piglet growth but negative effects on piglet survival in early lactation. Different nest-building materials have different effects depending on the type of farrowing system.

Ambient temperature-related sex ratio at birth in historical urban populations: the example of the city of Poznan, 1848-1900.

This study examines whether exposure to ambient temperature in nineteenth-century urban space affected the ratio of boys to girls at birth. Furthermore, we investigate the details of temperature effects timing upon sex ratio at birth. The research included 66,009 individual births, aggregated in subsequent months of births for the years 1847-1900, i.e. 33,922 boys and 32,087 girls. The statistical modelling of the probability of a girl being born is based on logistic GAM with penalized splines and automatically selected complexity. Our research emphasizes the significant effect of temperature in the year of conception: the higher the temperature was, the smaller probability of a girl being born was observed. There were also several significant temperature lags before conception and during pregnancy. Our findings indicate that in the past, ambient temperature, similar to psychological stress, hunger, malnutrition, and social and economic factors, influenced the viability of a foetus. Research on the effects of climate on the sex ratio in historical populations may allow for a better understanding of the relationship between environmental factors and reproduction, especially concerning historical populations since due to some cultural limitations, they were more prone to stronger environmental stressors than currently.

[Obstetric interventionism and maternalization ofwomen in childbirth care in Uruguay, 1920-1940]. / Intervencionismo obstétrico y maternalización de las mujeres en la atención del parto en Uruguay, 1920-1940.

This article analyzes the speeches of leading doctors in the creation of the specialty in childbirth care: gynecotology. Between 1920 and 1940, under the influence of eugenic and maternalist thinking, in a context of valuing the well-being of children, medicine built a new obstetric interventionism under the foundation of improving fetal viability. The supposed female "maternal instinct" was, thus, appealed to improve acceptance of the medical mandate. At the same time, doctors recognized their difficulties in providing adequate care. They did not wait long enough and tended to intervene in unnecessary physiological processes.

En este artículo se analizan discursos de médicos de referencia en la creación de la especialidad en la atención del parto: la ginecotocología. Entre 1920 y 1940, bajo la influencia del pensamiento eugenésico y maternalista, en un contexto de valorización del bienestar de la infancia, la medicina construyó un nuevo intervencionismo obstétrico bajo el fundamento de mejorar la viabilidad fetal. En ese marco se apeló al supuesto "instinto maternal" femenino para mejorar la aceptación del mandato médico. A la vez, los médicos reconocieron sus dificultades para asistir de forma adecuada. No esperaban el tiempo suficiente y tendían a intervenir más de lo necesario en procesos fisiológicos que no lo requerían.

The effect of non-pharmacological prenatal interventions on fear of childbirth: an overview of systematic reviews and meta-analysis.

BACKGROUND: During pregnancy and childbirth, alongside positive feelings, women undergo feelings such as fear of childbirth (FoC) and worry about its consequences, which could leave negative effects on the mother and her child during pregnancy, delivery, and postpartum. The study was carried out to determine the effectiveness of prenatal non-pharmacological interventions on reducing the FoC. METHODS: The protocol of the study was registered in PROSPERO (ID: CRD42023468547). PubMed, Web of Science, Cochrane, Scopus, SID (Scientific Information Database) and Google Scholar search engine databases were systematically searched until July 27, 2023 with no limitation of time and limited to Persian and English studies in order to perform this overview. Certainty of evidence was assessed using GRADE, methodological quality using AMSTAR 2 and reporting quality using PRISMA score. Meta-analysis was performed on the data extracted from the original trials to evaluate the effect of different interventions on reducing the FoC. Sub-group analysis and meta-regression models were used to examine high heterogeneity, and sensitivity analysis was used to eliminate the effect of high risk of bias studies on the study findings. RESULTS: Overall, 15 systematic reviews (SRs) were included in the overview, among which meta-analysis was performed in 9 studies. Considering methodological quality, these SRs were in low to critically low status and had relatively complete reports regarding reporting quality. Meta-analysis findings indicated that psychological interventions (SMD -2.02, 95% CI -2.69 to -1.36, 16 trials, 1057 participants, I2 = 95%) and prenatal educations (SMD -0.88, 95% CI -1.16 to -0.61, 4 trials, 432 participants, I2 = 72.8%) cause a significant reduction in FoC relative to prenatal usual cares with low certainty of evidence. Distraction techniques lead to a significant reduction in FoC relative to prenatal usual care with high certainty of evidence (SMD -0.75, 95% CI -1.18 to -0.33, 4 trials, 329 participants, I2 = 69%), but enhanced cares do not result in a significant decrease FoC relative to prenatal usual care with very low certainty of evidence (SMD -1.14, 95% CI -2.85 to 0.58, 3 trials, 232 participants, I2 = 97%). CONCLUSIONS: Distraction techniques are effective in reducing FoC. Regarding the effect of psychological interventions and prenatal educations on the reduction of FoC, the findings indicated that the interventions may result in the reduction of FoC. Very uncertain evidence showed that enhanced cares are not effective in reducing the FoC.