Publications by authors named "Renate Le Marsney"

Article Synopsis
  • This study investigates the effects of vitamin C and hydrocortisone on pediatric sepsis, aiming to improve survival rates without the need for inotropes/vasopressors.
  • The RESPOND trial is a randomized, open-label study involving nine PICUs in Australia and New Zealand, focusing on children under 18 with suspected or confirmed sepsis.
  • It will assess outcomes such as time alive without inotropic support, mortality rates, and quality of life, involving 384 patients to generate robust data for better treatment strategies.
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Objectives: To identify the health and economic costs of hospital-acquired complications (HACs) in children who require PICU admission.

Design: Propensity score matched cohort study analyzing routinely collected medical and costing data collected by the health service over 6 years (2015-2020).

Setting: Tertiary referral PICU in Queensland, Australia.

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Background: The development of new morbidities has become increasingly identified in paediatric critical care medicine. To date, there has been limited research of long-term outcomes following paediatric critical illness in Australia.

Objectives: The objective of this study was to quantify neurodevelopmental impairments in children following paediatric intensive care unit (PICU) discharge and their association with health-related quality of life (HRQoL).

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Background: Sepsis is defined as dysregulated host response to infection that leads to life-threatening organ dysfunction. Biomarkers characterising the dysregulated host response in sepsis are lacking. We aimed to develop host gene expression signatures to predict organ dysfunction in children with bacterial or viral infection.

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Background/aims: Regulatory guidelines recommend that sponsors develop a risk-based approach to monitoring clinical trials. However, there is a lack of evidence to guide the effective implementation of monitoring activities encompassed in this approach. The aim of this study was to assess the efficiency and impact of the risk-based monitoring approach used for a multicentre randomised controlled trial comparing treatments in paediatric patients undergoing cardiac bypass surgery.

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Article Synopsis
  • This study evaluates the effectiveness and safety of dexmedetomidine as a sedative for infants undergoing open heart surgery compared to midazolam.
  • The research involved a double-blinded, randomized trial in a pediatric cardiac unit, focusing on sedation levels and feasibility measures.
  • Results showed that dexmedetomidine led to increased time in light sedation without significant differences in overall safety or long-term health outcomes compared to midazolam.
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The placement of an endotracheal tube for children with acute or critical illness is a low-frequency and high-risk procedure, associated with high rates of first-attempt failure and adverse events, including hypoxaemia. To reduce the frequency of these adverse events, the provision of oxygen to the patient during the apnoeic phase of intubation has been proposed as a method to prolong the time available for the operator to insert the endotracheal tube, prior to the onset of hypoxaemia. However, there are limited data from randomised controlled trials to validate the efficacy of this technique in children.

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Importance: Most children admitted to pediatric intensive care units (PICUs) receive intravenous fluids. A recent systematic review suggested mortality benefit in critically ill adults treated with balanced solutions compared with sodium chloride, 0.9% (saline).

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Background/aims: In 2016, international standards governing clinical research recommended that the approach to monitoring a research project should be undertaken based on risk, however it is unknown whether this approach has been adopted in Australia and New Zealand (ANZ) throughout critical care research. The aims of the project were to: 1) Gain an understanding of current research monitoring practices in academic-led clinical trials in the field of critical care research, 2) Describe the perceived barriers and enablers to undertaking research monitoring.

Methods: Electronic survey distributed to investigators, research co-ordinators and other research staff currently undertaking and supporting academic-led clinical trials in the field of critical care in ANZ.

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In this article, a retrospective study was performed to describe the impact of merging two pediatric intensive care units on the overall and neurocognitive outcomes of children who required extracorporeal cardiopulmonary resuscitation (ECPR). Results from three cohorts were compared: 2008 to 2014: premerge, 2014 to 2017: initial time period postmerge, and 2018 to 2019: established merge. Survival to hospital discharge (and with good neurological outcome) was of 68% (61%), 46% (36%), and 79% (71%), respectively, for the three time periods.

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Background: Intravenous fluid therapy represents the most common intervention critically ill patients are exposed to. Hyperchloremia and metabolic acidosis associated with 0.9% sodium chloride have been observed to lead to worse outcomes, including mortality.

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Objectives: Up to 37% of children admitted to the PICU develop acute kidney injury as defined by Kidney Disease: Improving Global Outcomes criteria. We describe the prevalence of acute kidney injury in a mixed pediatric intensive care cohort using this criteria. As tools to stratify patients at risk of acute kidney injury on PICU admission are lacking, we explored the variables at admission and day 1 that might predict the development of acute kidney injury.

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Objective: To determine the accuracy of the National Institute of Child Health and Human Development (NICHD) calculator in predicting death and neurodevelopmental impairment in Australian and New Zealand infants.

Design: Population-based cohort study.

Setting: Australia and New Zealand.

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Background: Hematopoietic stem cell transplantation (HSCT) is a life-saving procedure for children with a variety of non-malignant conditions. However, these children face an increased risk of late death and incident cancers after HSCT, which may occur many years after their initial HSCT.

Procedure: We examined cancer occurrence and late mortality in a population-based cohort of 318 Australian children who underwent allogeneic HSCT for non-malignant disease.

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We quantified the risk of second cancer and late mortality in a population-based Australian cohort of 3273 adult (≥15 years) allogeneic hematopoietic stem cell transplant recipients (1992 to 2007). Most recipients received nonradiation-based conditioning and a peripheral blood graft from a matched related donor. Using record linkage with death and cancer registries, 79 second cancers were identified a median of 3.

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We assessed overall and cause-specific mortality and risk factors for late mortality in a nation-wide population-based cohort of 4547 adult cancer patients who survived 2 or more years after receiving an autologous hematopoietic stem cell transplantation (HSCT) in Australia between 1992 and 2005. Deaths after HSCT were identified from the Australasian Bone Marrow Transplant Recipient Registry and through data linkage with the National Death Index. Overall, the survival probability was 56% at 10 years from HSCT, ranging from 34% for patients with multiple myeloma to 90% for patients with testicular cancer.

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