1,131 results match your criteria: "The Ritchie Centre.[Affiliation]"

Introduction: Around the world, rates of induction of labour (IOL) among nulliparous mothers have increased in the last 10 years. In Australia, rates have increased over the last decade by 43%, from 32% to 46%. There is growing concern about the rapid rise in IOL before 41 weeks for nulliparous women without medical complications because of the associated increased rates of caesarean section, reduced satisfaction with birth, and birth trauma.

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Introduction: Early pregnancy care involves the screening and identification of women with risk factors for adverse pregnancy outcomes, including stillbirth or preterm birth, to tailor pregnancy care and interventions accordingly. Most stillbirths and approximately two-thirds of preterm births, however, occur in the absence of evident risk factors. The majority of stillbirths occur in the preterm period, yet there are few interventions targeting this period, and progress to reduce stillbirth rates remains slow.

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Background: Very preterm infants often require respiratory support after birth with current recommendations suggesting the use of continuous positive airway pressure (CPAP) of 4-8 cmHO and an initial fraction of inspired oxygen (FiO) of 0.21-0.3.

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Combined first-trimester screening for preterm small-for-gestational-age infants: Australian multicenter clinical feasibility study.

Ultrasound Obstet Gynecol

January 2025

Discipline of Obstetrics, Gynaecology and Neonatology, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.

Objective: To assess the performance of the Fetal Medicine Foundation (FMF) first-trimester competing-risks screening model for small-for-gestational-age (SGA) fetuses requiring delivery at < 37 weeks' gestation, in a large cohort of women receiving maternity care in Australia.

Methods: This was a retrospective analysis of prospectively collected data from a cohort of women attending one of two private multicenter fetal medicine practices for first-trimester screening for preterm pre-eclampsia (PE), defined as PE requiring delivery before 37 weeks' gestation. Risk for preterm SGA, defined as SGA requiring delivery before 37 weeks, was calculated but was not disclosed to the patient or referring physician.

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Cell therapies as treatments for neonatal conditions have attracted significant research and parent interest over the last two decades. Mesenchymal stromal cells, umbilical cord blood cells and neural stem cells translate from lab, to preclinical and into clinical trials, with contributions being made from all over the world. Effective and timely translation involves frequent reflection and consultation from research-adjacent fields (i.

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The last pregnancy trimester is critical for fetal brain development but is a vulnerable period if the pregnancy is compromised by fetal growth restriction (FGR). The impact of FGR on the maturational development of neuronal morphology is not known, however, studies in fetal sheep allow longitudinal analysis in a long gestation species. Here we compared hippocampal neuron dendritogenesis in FGR and control fetal sheep at three timepoints equivalent to the third trimester of pregnancy, complemented by magnetic resonance image for brain volume, and electrophysiology for synaptic function.

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Bereaved parent involvement in co-designed stillbirth research: Experiences of Project Engage.

Women Birth

January 2025

Centre of Research Excellence in Stillbirth, Mater Research, University of Queensland, Brisbane, Australia. Electronic address:

Background: While benefits of involving consumers in research are well established, bereaved parents face unique challenges, and descriptions of their experiences with co-designed stillbirth research are lacking. The collective experience of 'Project Engage' involved co-designing resources to support bereaved parents' involvement in research.

Methods: This study aimed to describe and evaluate the involvement of bereaved parents as co-investigators of a stillbirth research project.

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Immunosuppressant drug tacrolimus inhibits HUVEC angiogenesis and production of placental growth factor.

Placenta

January 2025

The Ritchie Centre, Department of Obstetrics and Gynaecology, School of Clinical Sciences, Monash University, Clayton, VIC, Australia.

Background: Tacrolimus is a cornerstone of immunosuppression in solid organ transplants, but its use is linked with the development of endothelial dysfunction. Pregnant solid organ transplant recipients are four to six times more likely to develop preeclampsia, which is also associated with endothelial dysfunction. Therefore, this in vitro study investigated the acute effects of tacrolimus on the expression of common angiogenic factors related to preeclampsia, and effects on angiogeneis in primary human tissues.

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Creatine monohydrate supplementation (CrM) is a safe and effective intervention for improving certain aspects of sport, exercise performance, and health across the lifespan. Despite its evidence-based pedigree, several questions and misconceptions about CrM remain. To initially address some of these concerns, our group published a narrative review in 2021 discussing the scientific evidence as to whether CrM leads to water retention and fat accumulation, is a steroid, causes hair loss, dehydration or muscle cramping, adversely affects renal and liver function, and if CrM is safe and/or effective for children, adolescents, biological females, and older adults.

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Background: Physiological-based cord clamping (PBCC) in preterm infants is beneficial for cardiovascular transition at birth and may optimize placental transfusion. Whether PBCC can improve clinical outcomes is unknown. The aim of the Aeration, Breathing, Clamping (ABC3) trial was to test whether PBCC results in improved intact survival in very preterm infants.

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Acute respiratory distress syndrome (ARDS) results in decreased quality of life, including increased risk of pulmonary hypertension (PH). In animal models, ARDS can be induced by lipopolysaccharide (LPS), which can disrupt the pulmonary endothelium and epithelium and induce inflammation. We tested whether administration or treatment with LPS alters the reactivity of intrapulmonary arteries and airways to constrictors relevant to both ARDS and PH, using the precision cut lung slice (PCLS) technique.

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Feasibility and safety of autologous cord blood derived cell administration in extremely preterm infants: a single-centre, open-label, single-arm, phase I trial (CORD-SaFe study).

EBioMedicine

January 2025

Monash Newborn, Monash Children's Hospital, Melbourne, Australia; Department of Paediatrics, Monash University, Melbourne, Australia; The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia. Electronic address:

Background: Evidence from preclinical studies in small and large animal models has shown neuroprotective effects of intravenous administration of umbilical cord blood derived cells (UCBCs). This study aimed to evaluate the feasibility of umbilical cord blood (UCB) collection, extraction of UCBCs, and subsequent safety of intravenous autologous administration of UCBCs in extremely preterm infants (born <28 weeks gestation).

Methods: A single-centre, open-label, single-arm, safety and feasibility clinical intervention trial was conducted at Monash Medical Centre and Monash Children's Hospital, Melbourne, Australia.

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Aim: To assess staff adherence to a 'Preterm Brain Injury Prevention Bundle', and its effectiveness in reducing severe intraventricular haemorrhage (IVH) rates and risk factors in extremely preterm infants born at <26 weeks' gestation.

Methods: Adherence to the bundle was assessed using a novel bedside assessment tool, with immediate feedback to bedside staff post-assessment. Data on IVH rates and associated risk factors were stratified by IVH severity, and compared between pre- and post-bundle implementation.

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Background And Aim: Unplanned extubation (UE) is an adverse event that can occur for neonates that are intubated and mechanically ventilated. UE is recognised as an important quality measure in the neonatal intensive care unit (NICU) due to the negative impact these events may have on the neonate. We aimed to use quality improvement (QI) methodology to reduce the rate of UE to the global standard of <1/100 ventilation days.

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Objective: Hypoxic-ischemic encephalopathy (HIE) is a major cause of perinatal brain injury. Creatine is a dietary supplement that can increase intracellular phosphocreatine to improve the provision of intracellular adenosine triphosphate (ATP) to meet the increase in metabolic demand of oxygen deprivation. Here, we assessed prophylactic fetal creatine supplementation in reducing acute asphyxia-induced seizures, disordered electroencephalography (EEG) activity and cerebral inflammation and cell death histopathology.

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Article Synopsis
  • Fetal growth restriction (FGR) is linked to higher cardiovascular disease risk, with no current treatments; however, antioxidants may offer a solution.
  • A systematic review analyzed studies on antenatal antioxidant interventions for cardiovascular outcomes in FGR, finding that 71% of studies reported improvement and over half showed strong cardiovascular protection.
  • Among 15 antioxidants studied, melatonin was most prevalent, and all examined methods demonstrated the restoration of endothelial function and reduction of oxidative stress.
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Asphyxiated neonates must have oxygenation rapidly restored to limit ongoing hypoxic-ischemic injury. However, the effects of transient hyperoxia after return of spontaneous circulation (ROSC) are poorly understood. We randomly allocated acutely asphyxiated, near-term lambs to cardiopulmonary resuscitation in 100% oxygen ("standard oxygen", n = 8) or air (n = 7) until 5 minutes after ROSC, or to resuscitation in 100% oxygen immediately weaned to air upon ROSC ("rapid-wean", n = 7).

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Article Synopsis
  • Infants with congenital diaphragmatic hernia often face serious breathing issues, but a technique called physiologically based cord clamping (PBCC) can help improve blood flow to their lungs when performed before cutting the umbilical cord.
  • In a study involving lambs with surgically induced diaphragmatic hernia, PBCC was tested against immediate cord clamping to see its effects on lung function over an 8-hour period following birth.
  • Results showed that lambs undergoing PBCC had significantly higher pulmonary blood flow and lower pulmonary vascular resistance compared to those with immediate cord clamping, indicating that PBCC is more beneficial for lung health in this condition.
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Article Synopsis
  • Chorioamnionitis (HCA) and funisitis (FUN) are linked to preterm birth, and their combined effects can negatively influence an infant's respiratory drive after birth.* -
  • A study involving 186 infants found that those with HCA and FUN had significantly lower gestational ages and birthweights compared to those without these conditions.* -
  • While HCA and FUN were associated with reduced breathing effort in the first five minutes of life, subclinical HCA and FUN showed no significant impact on breathing metrics.*
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Article Synopsis
  • This study investigates the effect of melatonin on reducing cesarean births during labor induction, hypothesizing that it may help lower the need for surgical intervention.
  • The trial was randomized and double-blind, involving 189 women with healthy singleton pregnancies, comparing those given 10 mg of melatonin to a placebo.
  • Results showed that cesarean rates were similar between the two groups, but the melatonin group had a lower rate of spontaneous vaginal births within 24 hours, leading to early termination of the trial due to logistical issues from the COVID-19 pandemic.
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Maternal asthma is associated with increased rates of neonatal lung disease, and fetuses from asthmatic ewes have fewer surfactant-producing cells and lower surfactant-protein B gene (SFTPB) expression than controls. Antenatal betamethasone increases lung surfactant production in preterm babies, and we therefore tested this therapy in experimental maternal asthma. Ewes were sensitised to house dust mite allergen, and an asthmatic phenotype induced by fortnightly allergen lung challenges; controls received saline.

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Background: Care for infants born at 22-24 weeks' gestation varies globally, with an increasing willingness to provide survival-focused ('active') care for infants born at 22 weeks' gestation in recent years. This study aims to report changes in care for infants born at 22-24 weeks before and after the introduction of a statewide guideline for extreme prematurity (EP).

Methods: A retrospective cohort study was conducted, including all live births at 22-24 weeks in tertiary perinatal centres from 1 January 2015 to 31 December 2022 in Victoria, Australia.

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