Publications by authors named "Marijke J C Timmermans"

Background: Women are underrepresented In cardiovascular disease research, constituting only 30 % of the cardiogenic shock (CS) population. Consequently, guidelines are mainly based on male patients. This study aims to comprehensively examine the sex-specific aspects of acute myocardial infarction (AMI)-related CS, encompassing presentation, treatment and outcomes.

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Background: Clinical quality registries (CQR) aid in measuring, collecting and monitoring outcome data but it is still unknown how these data are used by hospitals to improve the quality of care. This study assessed the current state of outcome-based quality improvement in the Netherlands in 2022 based on data from multiple disease areas and CQRs; cardiothoracic surgery (Netherlands Heart Registration [NHR]), cardiology (NHR), nephrology, (Nefrovision), intensive care (National Intensive Care Evaluation [NICE]), and orthopaedic surgery (Dutch Arthroplasty Register [LROI]).

Methods & Results: The Health Outcomes Management Evaluation (HOME) model was used to assess the current state of outcome-based quality improvement.

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Article Synopsis
  • Mortality rates in patients with cardiogenic shock due to acute myocardial infarction (AMICS) remain high, prompting research into how prehospital symptom duration affects patient outcomes.
  • A study analyzed data from 1,363 AMICS patients, revealing that longer symptom durations significantly increased the 30-day mortality rates, especially for those with symptoms lasting over 24 hours.
  • The findings highlight the importance of early identification and intervention, suggesting that prolonged symptoms are a strong predictor of poor survival rates in AMICS patients, particularly those receiving mechanical circulatory support.
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  • Patients with a history of coronary artery bypass surgery (CABG) often undergo percutaneous coronary intervention (PCI) for repeat revascularization, with a study examining factors influencing whether the intervention targets native vessels or bypass grafts.
  • Data from over 154,000 PCI patients from 2017 to 2021 indicated that 8.3% had previous CABG, with most undergoing native vessel PCI; however, those presenting with acute coronary syndrome (ACS) were more likely to have graft interventions.
  • One year after PCI, major adverse cardiac events (MACE) were higher in patients treated with grafts compared to those with only native vessels, though there was no notable difference in mortality or short-term outcomes between the two
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Article Synopsis
  • - Cardiogenic shock (CS) following acute myocardial infarction (AMI) leads to high rates of morbidity and mortality, with a study examining 2328 patients revealing a 30-day mortality rate of 39% and common characteristics among non-survivors.
  • - Patients who did not survive presented with lower blood pressure, higher heart rates, elevated blood lactate and glucose levels, and a greater prevalence of conditions like diabetes and prior coronary events.
  • - The study found that while a significant percentage of patients received mechanical support (mainly through intra-aortic balloon pumps) and vasoactive agents, and many underwent multivessel percutaneous coronary intervention (PCI), these treatments were administered despite limited evidence supporting their effectiveness in improving survival.
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Background: There is uncertainty whether multivessel (MV-PCI) or culprit-only percutaneous coronary intervention (CO-PCI) should be the treatment of choice in patients with non-ST segment elevation acute coronary syndrome (NSTE-ACS) and multivessel disease (MVD). Aims: To evaluate clinical characteristics and outcomes in these patients undergoing MV-PCI or CO-PCI at the index procedure. Methods: Data were retrieved from the nationwide Netherlands Heart Registration.

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Worldwide, quality registries for cardiovascular diseases enable the use of real-world data to monitor and improve the quality of cardiac care. In the Netherlands Heart Registration (NHR), cardiologists and cardiothoracic surgeons register baseline, procedural and outcome data across all invasive cardiac interventional, electrophysiological and surgical procedures. This paper provides insight into the governance and processes as organised by the NHR in collaboration with the hospitals.

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Aim: This study determined the effect of substitution of inpatient care from medical doctors (MDs) to physician assistants (PAs) on non-adherence to guidelines on medication prescribing.

Methods: A multicenter matched-controlled study was performed comparing wards on which PAs provide medical care in collaboration with MDs (PA/MD model), with wards on which only MDs provide medical care (MD model). A set of 17 quality indicators to measure non-adherence to guidelines on medication prescribing by PAs and MDs was composed by 14 experts in a modified Delphi procedure.

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Systematic outcome measurement enables to continuously improve treatment results and stimulates dissemination of best practices. For patients with coronary artery disease, no examples yet exist of standard sets of patient-relevant outcome measures that have already been fully implemented at a large scale in clinical care. The aim of this paper is twofold: (1) to share the standard set of outcome measures as developed by Meetbaar Beter, and (2) to show how the standard set is presented and published to support improvement of cardiac care.

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Background: Medical care for admitted patients in hospitals is increasingly reallocated to physician assistants (PAs). There is limited evidence about the consequences for the quality and safety of care. This study aimed to determine the effects of substitution of inpatient care from medical doctors (MDs) to PAs on patients' length of stay (LOS), quality and safety of care, and patient experiences with the provided care.

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Objective: To investigate the cost-effectiveness of substitution of inpatient care from medical doctors (MDs) to physician assistants (PAs).

Design: Cost-effectiveness analysis embedded within a multicentre, matched-controlled study. The traditional model in which only MDs are employed for inpatient care (MD model) was compared with a mixed model in which, besides MDs, PAs are also employed (PA/MD model).

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Objectives: To identify determinants of the initial employment of physician assistants (PAs) for inpatient care as well as of the sustainability of their employment.

Design: We conducted a qualitative study with semistructured interviews with care providers. Interviews continued until data saturation was achieved.

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Rationale, Aims And Objectives: Medical ward care has been increasingly reallocated from medical doctors (MDs) to physician assistants (PAs). Insight into their roles and tasks is limited. This study aims to provide insight into different organizational models of medical ward care, focusing on the position, tasks and responsibilities of the involved PAs and MDs.

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We hypothesized that early life exposure to nucleotides and nucleosides lowers the risk of recurrent wheeze, atopic dermatitis, and allergic sensitization among n = 429 children. Concentrations in breast milk were established by high-performance liquid chromatography; concentrations in formula milks were obtained from manufacturers. Questionnaires and home visits were used to assess outcomes.

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Background: Because of an expected shrinking supply of medical doctors for hospitalist posts, an increased emphasis on efficiency and continuity of care, and the standardization of many medical procedures, the role of hospitalist is increasingly allocated to physician assistants (PAs). PAs are nonphysician clinicians with medical tasks. This study aims to evaluate the effects of substitution of hospital ward care to PAs.

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