Publications by authors named "Heleen Lameijer"

Article Synopsis
  • * Conducted across 8 emergency departments, the research involved 167 patients, with PoCUS showing a sensitivity and specificity of 93% for detecting clavicle fractures.
  • * The findings suggest that PoCUS is a valuable method for triaging clavicle injuries, especially in adults, and helps identify patients needing further testing.
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Background: A wide variation of emergency medical system configurations across countries has limited the value of comparison of quality and performance measures in the past. Furthermore, lack of quantitative data on EDs prevents definition of the problems and possibilities for data driven improvement of quality of care. Therefore, the objective is to describe and compare Emergency Department (ED) populations and characteristics, and their outcomes in the Netherlands, Denmark and Australia, using a recently developed template for uniform reporting of standardized measuring and describing of care provided in the ED (structure, staffing and governance, population, process times and outcomes).

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Introduction: The COVID-19 outbreak disrupted regular health care, including the Emergency Department (ED), and resulted in insufficient ICU capacity. Lockdown measures were taken to prevent disease spread and hospital overcrowding. Little is known about the relationship of stringency of lockdown measures on ED utilization.

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Background: During closed reduction of displaced distal radius fractures, physical examination is used to determine the need for further manipulation before radiographic confirmation and cast application. Manipulation performed under ultrasound guidance has the potential to decrease the number of reduction attempts.

Methods: This multicentre randomised controlled trial was undertaken between December 2018 and July 2020 in the ED of four hospitals in the Netherlands.

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Procedural sedation is routinely performed for procedures in the emergency department (ED). Propofol is a commonly used sedative, frequently combined with an opioid or low-dose ketamine as an analgesic. However, there is still controversy on the optimal combination of agents in current guidelines.

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Article Synopsis
  • The study evaluated how well Dutch hospitals follow protocols for using reversal agents in patients on direct oral anticoagulants (DOAC).
  • It included data from 290 patients and found moderate adherence (61%) for bleeding cases involving prothrombin complex concentrate (PCC) and higher adherence (96%) for idarucizumab.
  • Urgent procedures showed low adherence (45%) for PCC and 0% for andexanet alfa, mainly due to underdosing, lack of indication, and missing lab data.
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Background: The ROX index combines respiratory rate and oxygenation to predict the response to oxygen therapy in pneumonia. It is calculated by dividing the patient's oxygen saturation, by the inspired oxygen concentration, and then by the respiratory rate (e.g.

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Unlabelled: Previous studies show that prolonged exposure to a high inspired oxygen concentration (FiO) is associated with unfavourable haemodynamic effects. Until now, it is unknown if similar effects also occur after oxygen therapy of limited duration in the emergency department (ED).

Objectives: To investigate the haemodynamic effects of a high FiO administered for a limited duration of time in patients who receive preoxygenation for procedural sedation and analgesia (PSA) in the ED.

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Objectives: To investigate and describe the protocolized perioperative management in patient using Direct oral anticoagulants (DOACs) in Dutch hospitals.

Methods: Between August and December 2020, a nationwide survey in 70 hospitals in the Netherlands was conducted. We asked hospital pharmacists to submit their protocols for perioperative management of DOAC (apixaban, dabigatran, edoxaban and rivaroxaban) users.

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Objective: To investigate and describe the protocolized treatment of DOAC-related bleeds in all Dutch hospitals.

Methods: From August to December 2020 a nationwide survey among all 70 hospitals in the Netherlands was conducted on their protocols for management of bleeding in patients treated with direct oral anticoagulants (DOACs, i.e.

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Article Synopsis
  • A study was conducted to assess the prognostic value of the Shock Index (SI) and Modified Shock Index (MSI) in patients who experienced return of spontaneous circulation (ROSC) after out-of-hospital cardiac arrest (OHCA).
  • The researchers found that 46% of the 403 patients included in the study survived until hospital discharge, but higher SI (≥ 1.00) and MSI (≥ 1.30) indicated significantly lower survival rates and higher chances of recurrent loss of circulation in the emergency department (ED).
  • The findings suggest that elevated SI and MSI are associated with poorer outcomes, highlighting the need for further research to understand the underlying reasons for these associations.
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Background: Treatment and the clinical course during Emergency Department (ED) stay before Intensive Care Unit (ICU) admission may affect predicted mortality risk calculated by the Acute Physiology and Chronic Health Evaluation (APACHE)-IV, causing lead-time bias. As a result, comparing standardized mortality ratios (SMRs) among hospitals may be difficult if they differ in the location where initial stabilization takes place. The aim of this study was to assess to what extent predicted mortality risk would be affected if the APACHE-IV score was recalculated with the initial physiological variables from the ED.

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Appropriate interpretation of blood tests is important for risk stratification and guidelines used in the Emergency Department (ED) (such as SIRS or CURB-65). The impact of abnormal blood test values on mortality may change with increasing age due to (patho)-physiologic changes. The aim of this study was therefore to assess the effect of age on the case-mix adjusted association between biomarkers of renal function and homeostasis, inflammation and circulation and in-hospital mortality.

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Background: Appropriate interpretation of vital signs is essential for risk stratification in the emergency department (ED) but may change with advancing age. In several guidelines, risk scores such as the Systemic Inflammatory Response Syndrome SIRS) and Quick Sequential Organ Failure Assessment (qSOFA) scores, commonly used in emergency medicine practice (as well as critical care) specify a single cut-off or threshold for each of the commonly measured vital signs. Although a single cut-off may be convenient, it is unknown whether a single cut-off for vital signs truly exists and if the association between vital signs and in-hospital mortality differs per age-category.

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Study Objective: To determine if a fixed dose of 1000 IU of 4-factor prothrombin complex concentrate (4F-PCC) is as effective as traditional variable dosing based on body weight and international normalized ratio (INR) for reversal of vitamin K antagonist (VKA) anticoagulation.

Methods: In this open-label, multicenter, randomized clinical trial, patients with nonintracranial bleeds requiring VKA reversal with 4F-PCC were allocated to either a 1,000-IU fixed dose of 4F-PCC or the variable dose. The primary outcome was the proportion of patients with effective hemostasis according to the International Society of Thrombosis and Haemostasis definition.

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Objective: The aim of this study was to investigate whether sex differences exist in disease presentations, disease severity and (case-mix adjusted) outcomes in the Emergency Department (ED).

Methods: Observational multicenter cohort study using the Netherlands Emergency Department Evaluation Database (NEED), including patients ≥ 18 years of three Dutch EDs. Multivariable logistic regression was used to study the associations between sex and outcome measures in-hospital mortality and Intensive Care Unit/Medium Care Unit (ICU/MCU) admission in ED patients and in subgroups triage categories and presenting complaints.

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Background And Importance: Although aging societies in Western Europe use presenting complaints (PCs) in emergency departments (EDs) triage systems to determine the urgency and severity of the care demand, it is unclear whether their prognostic value is age-dependent.

Objective: To assess the frequency and association of PCs with hospitalization and mortality across age categories.

Methods: An observational multicenter study using all consecutive visits of three EDs in the Netherlands Emergency department Evaluation Database.

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Objective: Early identification of emergency department (ED) patients who need hospitalization is essential for quality of care and patient safety. We aimed to compare machine learning (ML) models predicting the hospitalization of ED patients and conventional regression techniques at three points in time after ED registration.

Methods: We analyzed consecutive ED patients of three hospitals using the Netherlands Emergency Department Evaluation Database (NEED).

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Background: A promising modality for diagnosing pulmonary manifestations of COVID-19 in the emergency department (ED) is point-of-care ultrasound (POCUS) of the lungs. The currently used PCR as well as chest X-ray and CT scanning have important disadvantages. The aim of this study is to evaluate the diagnostic accuracy of POCUS in patients with suspected pulmonary manifestations of COVID-19 in the ED.

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Background And Importance: Healthcare personnel working in the emergency department (ED) is at risk of acquiring severe acute respiratory syndrome coronavirus-2 (SARS-Cov-2). So far, it is unknown if the reported variety in infection rates among healthcare personnel is related to the use of personal protective equipment (PPE) or other factors.

Objective: The aim of this study was to investigate the association between PPE use and SARS-CoV-2 infections among ED personnel in the Netherlands.

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Objective: The aim of this study was to assess the diagnostic value of point-of-care bedside ultrasound (PoCUS) as in usual clinical practice in suspected ankle and fifth metatarsal bone fractures, compared to the standard of radiographic imaging.

Methods: This prospective study included patients ≥17 years presenting to the Emergency Department with ankle trauma and positive Ottawa Ankle Rules. All patients underwent PoCUS of the ankle by a (resident) emergency physician, the images were assessed by an ultrasound expert.

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Clinical introductionA 68-year-old man, with known spasticity and a total left hip arthroplasty (THA) performed 6 years ago, was brought to our ED after falling down the stairs. Laying on the stretcher, his left leg was internally rotated and in hyperflexion. An X-ray of the left hip was performed.

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