Publications by authors named "Daniela C Souza"

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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Paediatric critical care units are designed for children at a vulnerable stage of development, yet the evidence base for practice and policy in paediatric critical care remains scarce. In this Health Policy, we present a roadmap providing strategic guidance for international paediatric critical care trials. We convened a multidisciplinary group of 32 paediatric critical care experts from six continents representing paediatric critical care research networks and groups.

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Early recognition of septic shock and its treatment are key factors for limiting progression to multiple organ dysfunction and death. Lactate, a byproduct of metabolic pathways, is usually elevated in tissue hypoperfusion and shock and is associated with poor prognosis in sepsis. As a biomarker, it may help the clinician in risk stratification, and the identification and treatment of sepsis.

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  • The study focuses on how liver transplantation affects the way antibiotics like piperacillin work, particularly in children, highlighting a gap in pharmacokinetic data for this population.
  • Eight pediatric patients were analyzed after being administered piperacillin-tazobactam, revealing that most had lower antibiotic concentrations than needed for effective treatment.
  • The findings suggest the necessity for individualized dosing strategies to ensure optimal antibiotic levels and therapeutic success in pediatric liver transplant recipients.
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Article Synopsis
  • * Children are particularly vulnerable to sepsis due to their unique physiological responses, necessitating focused interventions for early recognition and treatment.
  • * Effective quality improvement efforts for paediatric sepsis are limited worldwide; comprehensive programs must address prevention, awareness, and long-term support to enhance outcomes and foster global collaboration.
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  • Critically ill pediatric patients often face fluid accumulation (FA) due to administered fluids, which can lead to severe health complications and worsen outcomes.
  • A systematic review and meta-analysis of 120 studies involving 44,682 children showed that FA significantly increased the risks of mortality, acute kidney injury, prolonged mechanical ventilation, and longer ICU stays.
  • The findings suggest that careful monitoring and management of fluid levels in these patients is crucial to improve their overall health outcomes.
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Article Synopsis
  • The Society of Critical Care Medicine Pediatric Sepsis Definition Task Force worked on creating and validating new clinical criteria for identifying pediatric sepsis and septic shock, focusing on organ dysfunction metrics.
  • This research involved a large-scale international study across 10 healthcare systems, collecting data on nearly 3.6 million children over nine years to derive and test the new criteria.
  • The final scoring system, named the Phoenix Sepsis Score, was developed from a 4-organ-system model, demonstrating varying effectiveness in predicting mortality through different performance metrics during validation.
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Importance: Sepsis is a leading cause of death among children worldwide. Current pediatric-specific criteria for sepsis were published in 2005 based on expert opinion. In 2016, the Third International Consensus Definitions for Sepsis and Septic Shock (Sepsis-3) defined sepsis as life-threatening organ dysfunction caused by a dysregulated host response to infection, but it excluded children.

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Introduction: Vancomycin is widely prescribed to treat or prevent Gram-positive infections in pediatric liver transplant recipients. The objective of this prospective cohort study is to describe vancomycin pharmacokinetics and to evaluate the therapeutic target attainment after initial dose regimen.

Materials And Methods: Patients with previous renal injury were excluded.

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Purpose: The aim of this study is to characterize the concentration-time profile, pharmacokinetics parameters, and therapeutic target attainment of meropenem in pediatric post-liver transplant patients according to the duration of infusion.

Methods: This is a prospective cohort of pediatric transplant recipients with preserved renal function receiving meropenem 40 mg/kg every 8 hours. The patients were stratified into 2 groups based on infusion duration: G1 (15 minutes of intermittent infusion) and G1 (3 hours of extended infusion).

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Objective: To assess Brazilian pediatric intensivists' general knowledge of extracorporeal membrane oxygenation, including evidence for its use, the national funding model, indications, and complications.

Methods: This was a multicenter cross-sectional survey including 45 Brazilian pediatric intensive care units. A convenience sample of 654 intensivists was surveyed regarding their knowledge on managing patients on extracorporeal membrane oxygenation, its indications, complications, funding, and literature evidence.

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Article Synopsis
  • Septic shock significantly affects children globally, leading to high hospitalisation and mortality rates, prompting the paediatric Surviving Sepsis Campaign to update guidelines in 2020 based on existing evidence.
  • Recent trials from low and middle-income countries (LMICs) have provided new insights into effective treatment options, such as fluid management and vasoactive infusions.
  • This viewpoint highlights the need for improved sepsis care in LMICs by addressing early recognition of septic shock, fluid resuscitation, and individualised treatment approaches using accessible monitoring tools.
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Sepsis is a leading cause of global mortality in children, yet definitions for pediatric sepsis are outdated and lack global applicability and validity. In adults, the Sepsis-3 Definition Taskforce queried databases from high-income countries to develop and validate the criteria. The merit of this definition has been widely acknowledged; however, important considerations about less-resourced and more diverse settings pose challenges to its use globally.

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Objective: Standardized, consistent reporting of social determinants of health (SDOH) in studies on children with sepsis would allow for: 1) understanding the association of SDOH with illness severity and outcomes, 2) comparing populations and extrapolating study results, and 3) identification of potentially modifiable socioeconomic factors for policy makers. We, therefore, sought to determine how frequently data on SDOH were reported, which factors were collected and how these factors were defined in studies of sepsis in children.

Data Sources And Selection: We reviewed 106 articles (published between 2005 and 2020) utilized in a recent systematic review on physiologic criteria for pediatric sepsis.

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Objective: To validate the PIM3 score in Brazilian PICUs and compare its performance with the PIM2.

Methods: Observational, retrospective, multicenter study, including patients younger than 16 years old admitted consecutively from October 2013 to September 2019. We assessed the Standardized Mortality Ratio (SMR), the discrimination capability (using the area under the receiver operating characteristic curve - AUROC), and the calibration.

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Objective: To assess the percentage of vancomycin area under the curve/minimum inhibitory concentration target attainment in pediatric patients after the empirical dose regimen and to demonstrate the applicability of this method for vancomycin monitoring.

Methods: A retrospective cohort study was performed including pediatric patients with normal renal function admitted between January 2020 and December 2020. The one-compartment model with first-order kinetics was used to estimate the pharmacokinetic parameters, and the area under the curve was calculated by the trapezoidal rule.

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The liver plays a major role in drug metabolism. Liver transplantation impacts the intrinsic metabolic capability and extrahepatic mechanisms of drug disposition and elimination. Different levels of inflammation and oxidative stress during transplantation, the process of liver regeneration, and the characteristics of the graft alter the amount of functional hepatocytes and activity of liver enzymes.

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The Surviving Sepsis Campaign International Guidelines for the Management of Septic Shock and Sepsis-associated Organ Dysfunction in Children was released in 2020 and is intended for use in all global settings that care for children with sepsis. However, practitioners managing children with sep sis in resource-limited settings (RLS) face several challenges and disease patterns not experienced by those in resource-rich settings. Based upon our collective experience from RLS, we aimed to reflect on the difficulties of implementing the international guidelines.

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Article Synopsis
  • The study focuses on personalizing antimicrobial therapy for sepsis in pediatric patients, emphasizing the importance of pharmacokinetic and pharmacodynamic parameters.
  • A literature review was conducted, analyzing 118 articles on beta-lactam antibiotics used in septic children, with 21 studies meeting the criteria for in-depth examination.
  • Findings indicate that strategies such as extending infusion times and therapeutic monitoring are key in achieving effective drug levels, with an emphasis on the need for future research to determine optimal therapeutic targets for improved clinical outcomes.
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Objective: To describe the clinical characteristics and treatment of children with sepsis, severe sepsis, and septic shock at a pediatric emergency department of a public hospital.

Methods: A retrospective, observational study. The medical records of patients included in the hospital Pediatric Sepsis Protocol and patients with discharge ICD-10 A41.

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Sepsis is a worldwide public health problem due to its high incidence and accompanying mortality, morbidity, and financial burden. It is a major cause of admission to paediatric intensive care units; despite advances in the diagnosis and treatment, both incidence and mortality are high in low-income and middle-income countries. There are several barriers in addressing the enormous burden of paediatric sepsis in these countries, which include: lack of data of incidence and mortality; unfamiliarity of sepsis by the lay public, leading to failure to seek care early, and by health professionals, leading to failure to treat emergently; and insufficient government funding for sepsis care programmes leading to inadequate staffing, material, and financial resources, and therefore, poor health systems.

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The aim of this study was to develop evidence-based recommendations for the diagnosis and treatment of sepsis in children in low- and middle-income countries (LMICs), more specifically in Latin America. A panel was formed consisting of 27 experts with experience in the treatment of pediatric sepsis and two methodologists working in Latin American countries. The experts were organized into 10 nominal groups, each coordinated by a member.

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Background: Data on the prevalence and mortality of paediatric sepsis in resource-poor settings are scarce. We aimed to assess the prevalence and in-hospital mortality of severe sepsis and septic shock treated in paediatric intensive care units (PICUs) in Brazil, and risk factors for mortality.

Methods: We performed a nationwide, 1-day, prospective point prevalence study with follow-up of patients with severe sepsis and septic shock, using a stratified random sample of all PICUs in Brazil.

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