Publications by authors named "Joany M Zachariasse"

Article Synopsis
  • The study assesses the effectiveness of white blood cell count (WBC) in predicting serious bacterial infections (SBI) in children compared to C reactive protein (CRP) and absolute neutrophil count (ANC).
  • After analyzing data from over 17,000 febrile children across multiple European emergency departments, WBC showed poor predictive value with a sensitivity of 56% and specificity of 74% for WBC >15.
  • The findings suggest that CRP is a better marker for identifying SBI in children, and WBC should only be used for specific cases rather than as a routine diagnostic tool.
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Background: Clinical trials and registry studies are essential for advancing research and developing novel treatments. However, these studies rely on manual entry of thousands of variables for each patient. Repurposing real-world data can significantly simplify the data collection, reduce transcription errors, and make the data entry process more efficient, consistent, and cost-effective.

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Article Synopsis
  • Early detection of at-risk children in low- and middle-income countries (LMICs) is crucial for reducing severe health complications and deaths.
  • The study validated the Emergency Department-Pediatric Early Warning Score (ED-PEWS) using clinical data from various LMICs to assess its effectiveness in identifying children needing urgent care.
  • Results showed that the ED-PEWS is moderately to highly effective at recognizing high-urgency cases, with sensitivity and specificity varying across different locations, highlighting its potential to improve urgent care in these settings.
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Article Synopsis
  • * Using data from 12 European EDs, researchers analyzed presenting symptoms and management of febrile children under 18, identifying those suitable for a fast track system based on simplicity and minimal resource use.
  • * Findings revealed that respiratory symptoms were the most common, while neurological patients utilized more imaging and had higher admission rates, and gastrointestinal patients underwent more lab tests, indicating varying needs among the different symptom groups.
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Background: Multisystem inflammatory syndrome in children (MIS-C) is a severe complication of SARS-CoV-2 infection. It remains unclear how MIS-C phenotypes vary across SARS-CoV-2 variants. We aimed to investigate clinical characteristics and outcomes of MIS-C across SARS-CoV-2 eras.

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Children constitute 6-10% of all patients attending the emergency department (ED) by emergency medical services (EMS). However, discordant EMS use in children occurs in 37-61% with fever as an important risk factor. We aimed to describe EMS utilisation among febrile children attending European EDs.

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Objectives: To describe the characteristics and clinical outcomes of children with fever ≥5 days presenting to emergency departments (EDs).

Design: Prospective observational study.

Setting: 12 European EDs.

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Aim: This study investigated febrile children with petechial rashes who presented to European emergency departments (EDs) and investigated the role that mechanical causes played in diagnoses.

Methods: Consecutive patients with fever presenting to EDs in 11 European emergency departments in 2017-2018 were enrolled. The cause and focus of infection were identified and a detailed analysis was performed on children with petechial rashes.

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Objective: To assess sex differences in presentation and management of febrile children with respiratory symptoms attending European Emergency Departments.

Design And Setting: An observational study in twelve Emergency Departments in eight European countries.

Patients: Previously healthy children aged 0-<18 years with fever (≥ 38°C) at the Emergency Department or in the consecutive three days before Emergency Department visit and respiratory symptoms were included.

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Unlabelled: We aimed to describe characteristics and management of children with comorbidities attending European emergency departments (EDs) with fever. MOFICHE (Management and Outcome of Fever in children in Europe) is a prospective multicentre study (12 European EDs, 8 countries). Febrile children with comorbidities were compared to those without in terms of patient characteristics, markers of disease severity, management, and diagnosis.

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Background: Among pediatric emergency department (ED) visits, a subgroup of children repeatedly visits the ED, making them frequent visitors (FVs). The aim of this study is to get insight into the group of pediatric ED FVs and to determine risk factors associated with a revisit.

Methods And Findings: Data of all children aged 0-18 years visiting the ED of a university hospital in the Netherlands between 2017 and 2020 were included in this observational study based on routine data extraction.

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Background: Inappropriate antibiotic prescribing often occurs in children with self-limiting respiratory tract infections, contributing to antimicrobial resistance. It has been suggested that rapid viral testing can reduce inappropriate antibiotic prescribing. We aimed to assess the association between rapid viral testing at the Emergency Department (ED) and antibiotic prescription in febrile children.

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Objective: To identify differences related to sex and define autism spectrum disorder (ASD) comorbidities female-enriched through a comprehensive multi-PheWAS intersection approach on big, real-world data. Although sex difference is a consistent and recognized feature of ASD, additional clinical correlates could help to identify potential disease subgroups, based on sex and age.

Materials And Methods: We performed a systematic comorbidity analysis on 1860 groups of comorbidities exploring all spectrum of known disease, in 59 140 individuals (11 440 females) with ASD from 4 age groups.

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Objective: To assess the value of the Emergency Department-Pediatric Early Warning Score (ED-PEWS) for triage of children with comorbidity.

Design: Secondary analysis of a prospective cohort.

Setting And Patients: 53 829 consecutive ED visits of children <16 years in three European hospitals (Netherlands, UK and Austria) participating in the TrIAGE (Triage Improvements Across General Emergency departments) project in different periods (2012-2015).

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Background: To develop a clinical prediction model to identify children at risk for revisits with serious illness to the emergency department.

Methods And Findings: A secondary analysis of a prospective multicentre observational study in five European EDs (the TRIAGE study), including consecutive children aged <16 years who were discharged following their initial ED visit ('index' visit), in 2012-2015. Standardised data on patient characteristics, Manchester Triage System urgency classification, vital signs, clinical interventions and procedures were collected.

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Objective: (1) To derive reference values for the Shock Index (heart rate/systolic blood pressure) based on a large emergency department (ED) population of febrile children and (2) to determine the diagnostic value of the Shock Index for serious illness in febrile children.

Design/setting: Observational study in 11 European EDs (2017-2018).

Patients: Febrile children with measured blood pressure.

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Objective: Our aim was to describe variability in resource use and hospitalization in children presenting with shortness of breath to different European Emergency Departments (EDs) and to explore possible explanations for variability.

Design: The TrIAGE project, a prospective observational study based on electronic health record data.

Patients And Setting: Consecutive paediatric emergency department visits for shortness of breath in five European hospitals in four countries (Austria, Netherlands, Portugal, United Kingdom) during a study period of 9-36 months (2012-2014).

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Background: Vital signs are used in emergency care settings in the first assessment of children to identify those that need immediate attention. We aimed to develop and validate vital sign based Manchester Triage System (MTS) discriminators to improve triage of children at the emergency department.

Methods And Findings: The TrIAGE project is a prospective observational study based on electronic health record data from five European EDs (Netherlands (n = 2), United Kingdom, Austria, and Portugal).

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Background: The aim was to study the characteristics and management of children visiting the emergency department (ED) during out-of-office hours.

Methods: We analysed electronic health record data from 119 204 children visiting one of five EDs in four European countries. Patient characteristics and management (diagnostic tests, treatment, hospital admission and paediatric intensive care unit admission) were compared between children visiting during office hours and evening shifts, night shifts and weekend day shifts.

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Objective: To assess the role of sex in the presentation and management of children attending the emergency department (ED).

Design: The TrIAGE project (TRiage Improvements Across General Emergency departments), a prospective observational study based on curated electronic health record data.

Setting: Five diverse European hospitals in four countries (Austria, The Netherlands, Portugal, UK).

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Background: Paediatric Early Warning Scores (PEWSs) are being used increasingly in hospital wards to identify children at risk of clinical deterioration, but few scores exist that were designed for use in emergency care settings. To improve the prioritisation of children in the emergency department (ED), we developed and validated an ED-PEWS.

Methods: The TrIAGE project is a prospective European observational study based on electronic health record data collected between Jan 1, 2012, and Nov 1, 2015, from five diverse EDs in four European countries (Netherlands, the UK, Austria, and Portugal).

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Background: Different definitions exist for hypotension in children. In this study, we aim to identify evidence-based reference values for low blood pressure and to compare these with existing definitions for systolic hypotension.

Methods: We searched online databases until February 2019 (including MEDLINE, EMBASE, Web of Science) using a comprehensive search strategy to identify studies that defined age-related centiles (first to fifth centile) for non-invasive systolic blood pressure in healthy children < 18 years.

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Objective: To assess and compare the performance of triage systems for identifying high and low-urgency patients in the emergency department (ED).

Design: Systematic review and meta-analysis.

Data Sources: EMBASE, Medline OvidSP, Cochrane central, Web of science and CINAHL databases from 1980 to 2016 with the final update in December 2018.

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Background: The value of routine blood pressure measurement in the emergency department (ED) is unclear.

Objective: To determine the association between hypotension in addition to tachycardia and the Shock Index for serious illness.

Design: Observational study.

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Objectives: Emergency department triage systems can be considered prediction rules with an ordinal outcome, where different directions of misclassification have different clinical consequences. We evaluated strategies to compare the performance of triage systems and aimed to propose a set of performance measures that should be used in future studies.

Study Design And Setting: We identified performance measures based on literature review and expert knowledge.

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