Publications by authors named "Giesen P"

Background: General practitioners (GPs) often assess patients with acute infections. It is challenging for GPs to recognize patients needing immediate hospital referral for sepsis while avoiding unnecessary referrals. This study aimed to predict adverse sepsis-related outcomes from telephone triage information of patients presenting to out-of-hours GP cooperatives.

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Background: ADP-induced platelet activation leads to cell surface expression of several proteins, including TF (tissue factor). The role of ADP receptors in platelet TF modulation is still unknown. We aimed to assess the (1) involvement of P2Y and P2Y receptors in ADP-induced TF exposure; (2) modulation of TF-platelets in anti-P2Y-treated patients with coronary artery disease.

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Background: Tachypnoea in acutely ill patients can be an early sign of a life-threatening condition such as sepsis. Routine measurement of the respiratory rate by GPs might improve the recognition of sepsis.

Aim: To assess the accuracy and feasibility of respiratory rate measurements by GPs.

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Background: Point-of-care testing (POCT) is increasingly used in primary care. The rapid availability of the test result during the patient encounter increases the potential for patients and care providers to make a direct and joint decision on disease management. Our aim was to get insight into the first experiences of patients and healthcare professionals after introducing quality-controlled HbA1c and professional glucose POCT in diabetes care in their own general practices.

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Background: Recognising patients who need immediate hospital treatment for sepsis while simultaneously limiting unnecessary referrals is challenging for GPs.

Aim: To develop and validate a sepsis prediction model for adult patients in primary care.

Design And Setting: This was a prospective cohort study in four out-of-hours primary care services in the Netherlands, conducted between June 2018 and March 2020.

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Background: The Netherlands Triage Standard (NTS) is a triage system that can be used by different types of emergency care organisations. Our objective was to determine the interrater reliability and construct validity of the NTS when applied to self-presenting patients.

Methods: We performed a cross-sectional case scenario study consisting of two parts: (1) paediatric triage in January-February 2019 and (2) adult triage in October-November 2020.

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Background: Thrombin generation (TG) assessed by Calibrated Automated Thrombogram (CAT-I) reflects the overall capacity of plasma to generate thrombin, thus evaluating the balance between the anti- and procoagulant processes. However, with this method the calibrator curve is usually not measured until completion which has a severe impact on the calculation of the TG parameters, especially under conditions where almost all substrate is consumed. In addition, direct thrombin inhibitor (DTI) cannot be present in the calibration sample due to inhibition of the calibrator.

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Background: Direct access to hospital radiology facilities by general practitioner (GP) cooperatives is known to decrease the number of emergency department referrals, but the effects on length of stay (LOS; time from patient arrival at GP cooperative till departure to home) and patient experiences are unclear.

Objectives: To provide insight into the LOS and experiences of trauma patients with an indication for radiology at GP cooperatives with and without access to radiology.

Methods: A multi-methods observational study in April 2014-October 2015 at six GP cooperatives in The Netherlands, covering three organisational models for access to radiology: no direct access, limited access and unlimited access.

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Background: Signs of the systemic inflammatory response syndrome (SIRS) - fever (or hypothermia), tachycardia and tachypnoea - are used in the hospital setting to identify patients with possible sepsis.

Objectives: To determine how frequently abnormalities in the vital signs of SIRS are present in adult out-of-hours (OOH) primary care patients with suspected infections and assess the association with acute hospital referral.

Methods: We conducted a cross-sectional study at the OOH GP cooperative in Nijmegen, the Netherlands, between August and October 2015.

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Objective: To determine the inter-rater reliability and validity of the Netherlands Triage Standard (NTS) for paediatric triage.

Design: A cross-sectional study using fictional cases for telephone and physical triage.

Method: An expert panel established in advance the urgency of 40 cases concerning emergency help requests from non-referred children (the reference standard).

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Background: Various models exist to organize out-of-hours primary care (OOH-PC). We aimed to provide an up-to-date overview of prevailing organizational models in the European Union (EU), implemented changes over the last decade and future plans. This baseline overview may provide information for countries considering remodelling their OOH-PC system.

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Background: General practitioners experience a high workload during out-of-hours care. A possible solution is the shifting of care to nurse practitioners.

Objectives: To provide insight into patient- and care characteristics, safety, efficiency, and patient satisfaction of substituting general practitioners with nurse practitioners for home visits by out-of-hours primary care services.

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Introduction: Because of the lack of prehospital protocols to rule out a non-ST-segment elevation acute coronary syndrome (NSTE-ACS), patients with chest pain are often transferred to the emergency department (ED) for thorough evaluation. However, in low-risk patients, an ACS is rarely found, resulting in unnecessary healthcare consumption. Using the HEART (History, ECG, Age, Risk factors and Troponin) score, low-risk patients are easily identified.

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Objectives: Timely recognition and treatment of sepsis is essential to reduce mortality and morbidity. Acutely ill patients often consult a general practitioner (GP) as the first healthcare provider. During out-of-hours, GP cooperatives deliver this care in the Netherlands.

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Background: Migrants relatively often use out-of-hours primary care. The objective of this study is to examine the motives and expectations of migrants for contacting out-of-hours primary care.

Methods: We used data from a survey study of 11,483 patients who contacted a General Practitioner (GP) cooperative in the Netherlands between 2009 and 2014 (response rate 45.

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Background: Pulmonary imaging often identifies suspicious abnormalities resulting in supplementary diagnostic procedures. This study aims to investigate whether the metabolic fingerprint of plasma allows to discriminate between patients with lung inflammation and patients with lung cancer.

Methods: Metabolic profiles of plasma from 347 controls, 269 cancer patients and 108 patients with inflammation were obtained by H-NMR spectroscopy.

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Early recognition and treatment of sepsis is essential to prevent morbidity and mortality. Many sepsis patients are initially assessed by a general practitioner (GP). Delay can be prevented if patients are referred to the hospital as soon as possible.

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Background: Continuity of care is important for palliative patients in their end of life. In the Netherlands, after-hours primary care for palliative patients is either provided by large-scale general practitioner (GP) cooperatives or GPs choose to give palliative care by themselves while they are not on duty.

Aim: To examine the availability of, perceived problems by, and attitude of Dutch GPs regarding providing palliative care for their own patients outside office hours.

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Objective: To examine patient safety culture in Dutch out-of-hours primary care using the safety attitudes questionnaire (SAQ) which includes five factors: teamwork climate, safety climate, job satisfaction, perceptions of management and communication openness.

Design: Cross-sectional observational study using an anonymous web-survey. Setting Sixteen out-of-hours general practitioner (GP) cooperatives and two call centers in the Netherlands.

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Background: Patients with life-threatening conditions who contact out-of-hours primary care either receive a home visit from a GP of a GP cooperative (GPC) or are handed over to the ambulance service.

Objective: The objective of this study was to determine whether highly urgent visits, after a call to the GPC, are delivered by the most appropriate healthcare provider: GPC or ambulance service.

Methods: We performed a cross-sectional study using patient record data from a GPC and ambulance service in an urban district in The Netherlands.

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Background: Telephone triage is a core but vulnerable part of the care process at out-of-hours general practitioner (GP) cooperatives. In the Netherlands, different instruments have been used for assessing the quality of telephone triage. These instruments focussed mainly on communicational aspects, and less on the medical quality of triage decisions.

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Background: Migrants are more likely to use out-of-hours primary care, especially for nonurgent problems. Their motives and expectations for help-seeking are as yet unknown. The objective of this study is to examine the motives and expectations of migrants for contacting out-of-hours primary care.

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Objective: There is a trend for General Practitioner Cooperatives (GPCs) to co-locate with emergency departments (EDs) of hospitals at Emergency Care Access Points (ECAPs), where the GPCs generally conduct triage and treat a large part of self-referrals who would have gone to the ED by themselves in the past. We have examined patient and care characteristics of self-referrals at ECAPs where triage was conducted by GPCs, also to determine the percentage of self-referrals being referred to the ED.

Design: Retrospective cross-sectional observational study.

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Background: In the Netherlands, out-of-hours primary care is provided in general-practitioner-cooperatives (GPCs). These are increasingly located on site with emergency departments (ED), forming Emergency-Care-Access-Points (ECAP). A more efficient and economical organization of out-of-hours primary emergency care could be realized by increased collaboration at an ECAP.

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