Papers by Marie-louise Bartelink
Family Practice, 2015
Earlier studies have shown that clinical queries are common among doctors. Data on the informatio... more Earlier studies have shown that clinical queries are common among doctors. Data on the information-seeking behaviour of general practice (GP) trainees are scarce though, and numbers studied are small. The objective of this study was to determine how often and how GP trainees search for answers to clinical queries encountered in daily clinical practice. Third-year GP trainees kept logs on all patient contacts for eight consecutive practice days. Information was obtained on patient contacts (description), clinical queries (frequency, type), seeking behaviour (frequency, moment, reason not to search, resources used, duration of search) and answers (frequency, impact). Descriptive analyses were performed; frequencies and percentages were computed. We calculated the number of clinical queries per patient, the number of searches per query and the number of answers per search. Seventy-six trainees reported 1533 clinical queries about 7300 patients presenting 7619 complaints [mean of 0.2 queries per patient, standard deviation (SD) 0.1]. For most of the queries trainees pursued an answer (mean of 0.8 per query, SD 0.2), mostly during consultation (61% of searches), and frequently retrieved answers (mean of 0.8 per search, SD 0.17) they reported to improve clinical decision making in 26%. Most common resources were colleagues or supervisors (28%), and national GP guidelines (26%). The median duration of a search was 4 minutes (interquartile range 3). GP trainees have one clinical query per five patients. They often attempted to find answers and reported to succeed in most of the searches, primarily by consulting supervisors or colleagues and national GP guidelines.
European Journal of Cancer, 2004
The journal of Tehran Heart Center, 2010
An electrocardiogram (ECG) can provide information on subclinical myocardial damage. The presence... more An electrocardiogram (ECG) can provide information on subclinical myocardial damage. The presence, and more importantly, the quantity of coronary artery calcification (CAC), relates well with the overall severity of the atherosclerotic process. A strong relation has been demonstrated between coronary calcium burden and the incidence of myocardial infarction, a relation independent of age. The aim of this study was to assess the relation of left ventricular hypertrophy (LVH) and ECG abnormalities with CAC. The study population comprised 566 postmenopausal women selected from a population-based cohort study. Information on LVH and repolarization abnormalities (T-axis and QRS-T angle) was obtained using electrocardiography. Modular ECG Analysis System (MEANS) was used to assess ECG abnormalities. The women underwent a multi detector-row computed tomography (MDCT) scan (Philips Mx 8000 IDT 16) to assess CAC. The Agatston score was used to quantify CAC; scores greater than zero were cons...
Atherosclerosis Supplements, 2011
Methods: The study population comprised 573 postmenopausal women selected from a population-based... more Methods: The study population comprised 573 postmenopausal women selected from a population-based cohort study. Established vascular risk factors were measured. The women underwent a multi detector-row computed tomography (16-MDCT) (Philips Mx 8000 IDT 16) to assess coronary calcium. The Agatston score was used to quantify coronary calcium. Logistic regression models were utilized to assess the relations.
Atherosclerosis Supplements, 2011
The aim of this study was to investigate whether EAT quantity and morphology changes in the setti... more The aim of this study was to investigate whether EAT quantity and morphology changes in the setting of acute myocardial infarction (MI) and post-MI remodelling. Method and Material: 16 patients (75% men, mean age 61±10 years) were investigated with MRI. The MRI investigations were performed 7 days and 4 month after a ST-elevation MI (STEMI). All experiments were performed on a 1.5-Tesla scanner (Phillips, Intera) whole-body imaging system. 8 mm shortaxis slices covering the entire heart from base to apex were acquired in cineloops. Epicardial tissue was manually traced in the end diastolic slices (9 slices/patient). Results: There was no difference in the quantity of EAP at 7 days and at 4 months after MI . Compared to baseline, left ventricular ejection fraction (LVEF) increased by 9% (p < 0.05). Data are expressed as mean±SEM. Conclusion: Our study suggests that the amount of EAT does not change during the early post-MI remodelling phase. Further studies should address the question whether qualitative and quantitative changes in EAT occurs under other clinical and experimental conditions. 857 LOW-DOSE PRAVASTATIN PLUS EZETIMIBE VERUS STANDARD-DOSE PRAVASTATIN: THE EFFECT ON THE CAROTID ATHEROSCLEROSIS OF PATIENTS WITH HYPERCHOLESTEROLEMIA Y. Sawayama. General Medicine, Fukuoka Red Cross Hospital, Fukuoka, Japan
The British journal of general practice : the journal of the Royal College of General Practitioners, 2006
If a validated questionnaire, when applied to patients reporting with symptoms of intermittent cl... more If a validated questionnaire, when applied to patients reporting with symptoms of intermittent claudication, could adequately discriminate between those with and without peripheral arterial disease, GPs could avoid the diagnostic measurement of the ankle brachial index. To investigate the Edinburgh Claudication Questionnaire (ECQ) in general practice and to develop a clinical decision rule based on risk factors to enable GPs to easily assess the likelihood of peripheral arterial disease. An observational study. General practice in The Netherlands. This observational study included patients of > or =55 years visiting their GP for symptoms suggestive of intermittent claudication or with one risk factor. The ECQ and the ankle brachial index were performed. The prevalence of peripheral arterial disease, defined as an ankle brachial index <0.9, was related to risk factors using logistic regression analyses, on which a clinical decision rule was developed and related to the presence...
Revista Española de Cardiología, 2012
... Clément , Jean-Philippe Collet , Alberto Cremonesi , Marco De Carlo , Raimund Erbel , F. Gerr... more ... Clément , Jean-Philippe Collet , Alberto Cremonesi , Marco De Carlo , Raimund Erbel , F. Gerry R. Fowkes , Magda Heras , Serge Kownator , Erich Minar , Jan Ostergren , Don Poldermans , Vincent Riambau , Marco Roffi , Joachim Röther , Horst Sievert , Marc van Sambeek y ...
Vascular Medicine, 2007
Measurement of the ankle-brachial index (ABI) can provide important information about the presenc... more Measurement of the ankle-brachial index (ABI) can provide important information about the presence of subclinical atherosclerosis. Performing the ABI in the overall population is not feasible, but it can be used in a selected population. A simple prediction rule could be of much use to estimate the risk of an abnormal ABI. This was designed as an observational study in the setting of 955 general practices in The Netherlands. A total of 7454 patients aged Ն 55 years presenting with at least one vascular risk factor (smoking, hypertension, diabetes, and hypercholesterolemia) and no complaints of intermittent claudication were included. Patients were selected by the general practitioner during visiting hours and from medical records. Main outcome measures included the prevalence of PAD, defined as an ABI below 0.9, which was related to vascular risk factors using regression analyses on which the PREVALENT clinical prediction model was developed. The overall prevalence of PAD was 18.4%. Since the treatment of individuals with a history of coronary heart disease and cerebrovascular disease will not be influenced by the finding of asymptomatic PAD, these individuals were not taken into account for the development of the clinical prediction model. Analyses showed a significantly increased risk for PAD with increasing age, smoking, and hypertension. The clinical prediction model giving risk factor points per factor (age: 1 point per 5 years starting at 55 years; ever smoked: 2 points; currently smoking: 7 points; and hypertension: 3 points), showed a proportional increase of the PAD prevalence with each increasing risk profile (range: 7.0-40.6%). In conclusion, based on the PREVALENT clinical prediction model, the general practitioner is able to identify a high-risk population in which measurement of ABI is useful.
Vascular Health and Risk Management, 2012
Introduction: Intermittent claudication (IC) is a manifestation of peripheral arterial occlusive ... more Introduction: Intermittent claudication (IC) is a manifestation of peripheral arterial occlusive disease (PAOD). Besides cardiovascular risk management, supervised exercise therapy (SET) should be offered to all patients with IC. Outdated guidelines, an insufficient number of specialized physiotherapists (PTs), lack of awareness of the importance of SET by referring physicians, and misguided financial incentives all seriously impede the availability of a structured SET program in The Netherlands. Description of care practice: By initiating regional care networks, ClaudicatioNet aims to improve the quality of care for patients with IC. Based on the chronic care model as a conceptual framework, these networks should enhance the access, continuity, and (cost) efficiency of the health care system. With the aid of a national database, health care professionals will be able to benchmark patient results while ClaudicatioNet will be able to monitor quality of care by way of functional and patient reported outcome measures. Discussion: The success of ClaudicatioNet is dependent on several factors. Vascular surgeons, general practitioners and coordinating central caregivers will need to team up and work in close collaboration with specialized PTs. A substantial task in the upcoming years will be to monitor the quality, volume, and distribution of ClaudicatioNet PTs. Finally, misguided financial incentives within the Dutch health care system need to be tackled. Conclusion: With ClaudicatioNet, integrated care pathways are likely to improve in the upcoming years. This should result in the achievement of optimal quality of care for all patients with IC.
Menopause, 2008
Metabolic disturbances may explain the increased cardiovascular risk associated with reproductive... more Metabolic disturbances may explain the increased cardiovascular risk associated with reproductive factors. This cohort study investigated the relationship between reproductive factors and coronary artery calcification in elderly women and whether this relationship could be explained by metabolic disturbances. In total, 568 postmenopausal women were included in this cross-sectional study. Information about the women&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s reproductive life was obtained by a questionnaire. Metabolic factors were measured during a single visit. Coronary artery calcification was assessed with a multislice computed tomography scanner and dichotomized as absent or present. Logistic regression analysis was used to assess the relationship between reproductive factors and coronary artery calcification. Crude and multivariate adjusted odds ratios (ORs) with corresponding 95% confidence intervals (CIs) were calculated. In addition, ORs were adjusted for several metabolic and cardiovascular risk factors. The mean age was 66.9 (+/- 5.5) years. Women with a history of irregular menstrual cycle lengths, as opposed to women with a history of regular menstrual cycles (26-30 d), had an increased risk of coronary artery calcification; multivariate-adjusted OR = 2.73 (95%CI: 1.24-5.98). Four or more pregnancies, compared with never pregnant, yielded an multivariate-adjusted OR of 1.89 (95% CI: 1.00-3.58). Having four children or more, compared with having no children, yielded a multivariate-adjusted OR of 1.97 (95% CI: 1.00-3.89). Adjustment for metabolic factors and other cardiovascular risk factors did not fully explain theses relationships. Multigravidity (more than four pregnancies), multiparity (more than four births), and irregular menstrual cycle lengths were related to an increased risk of coronary artery disease. These associations could not be explained by metabolic abnormalities.
Menopause, 2006
Loss of ovarian function and subsequent deficiency of endogenous estrogens is suggested to enhanc... more Loss of ovarian function and subsequent deficiency of endogenous estrogens is suggested to enhance cardiovascular disease risk and related death after menopause. The aim was to obtain valid estimates of the cardiovascular disease risk associated with postmenopausal status and early menopause. A literature search of observational studies was performed using PubMed and EMBASE (1966 to May 1, 2004). Eighteen studies on postmenopausal status and age at menopause in relation to cardiovascular disease were selected. Six studies investigated menopausal status, nine studies investigated menopausal age, and three studied both. General variance-based methods were used to pool relative risk estimates and corresponding 95% confidence intervals. Stratification was performed for study design, type of menopause, outcome, and adjustment for age and smoking. The pooled relative risk estimate for postmenopausal versus premenopausal status and cardiovascular disease was 1.36 (95% CI, 1.15-1.60). In the stratified analysis, the pooled effect was 0.96 (95% CI, 0.77-1.21) after controlling for age and smoking. The pooled effect of bilateral oophorectomy on cardiovascular disease was 2.62 (95% CI, 2.05-3.35). For early menopause and cardiovascular disease, with the menopausal age category containing 50 years as a reference, the pooled relative risk estimate was 1.25 (95% CI, 1.15-1.35). In the stratified analysis, the pooled effect was 1.38 (95% CI, 1.21-1.58) after controlling for age and smoking. The pooled effect of bilateral oophorectomy on cardiovascular disease was 4.55 (95% CI, 2.56-8.01). Overall, there was no convincing relationship between postmenopausal status and cardiovascular disease. However, there was a modest effect of early menopause on cardiovascular disease. The effect was more pronounced for women with an artificial menopause than for women with a natural menopause.
Medical Teacher, 2013
General practitioner (GP) trainees state that their trainers are not consistent in using evidence... more General practitioner (GP) trainees state that their trainers are not consistent in using evidence-based medicine (EBM) or are even dismissive of it. As trainers are important role models in the Dutch GP training system this could have a large influence on the EBM training of GP trainees. To establish the motivations and barriers of Dutch GP trainers in using EBM. A questionnaire on personal characteristics, knowledge, skills (Berlin, score 0-15) and attitude (McColl, VAS score 0-100), and statements about EBM barriers were presented to 106 GP trainers. Additionally, three focus group sessions with trainers (n = 30) were held. Knowledge and skills were less than half correct (mean 6.1, standard deviation (SD) 2.9); the overall score on attitude was 58.8 (SD 9.4). Factor analysis showed four categories of barriers: EBM competence (mean 3.5 (SD 0.8)), search activities (mean 3.5 (SD 0.8)), motivation (mean 3.8 (SD 0.7)) and time (mean 2.5 (SD 0.9)). After analysis of the focus group sessions, five categories of motivations and barriers predominated: EBM competence, attitude and behaviour, sources, time and logistics. GP trainers experience motivations in EBM; however, these motivations can also be barriers, depending on the trainer&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s level of knowledge and attitude.
Maturitas, 2009
The protective effect of endogenous estrogens in cardiovascular disease may in part originate fro... more The protective effect of endogenous estrogens in cardiovascular disease may in part originate from effects of circulating estrogens on the electrophysiological properties of the myocardium. The aim of this study was to investigate the relation between reproductive factors and the electrocardiographic frontal T axis in postmenopausal women. Cohort study. The study was conducted at the University Medical Center Utrecht. In total, 998 postmenopausal women were included. Information of women&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s reproductive life was obtained by a questionnaire. Electrocardiographic frontal T axes were categorized as normal (25-65 degrees) or abnormal (-180 degrees to 24 degrees and 66-180 degrees). Logistic regression analysis was used to assess the relationship between reproductive factors and the frontal T axis. Moreover, the effect of the lifetime cumulative number of menstrual cycles, a composite measure of all reproductive factors, on the frontal T axis was investigated. The mean age was 66.0 (+/-5.6) years and 15.3% had T-axes abnormalities. Later menopausal age decreased the risk on frontal T-axis abnormalities; the multivariable adjusted odds ratio was 0.97 (95% CI: 0.94-0.99) per year increasing menopause. For the lifetime cumulative number of menstrual cycles the age-adjusted odds ratio was 0.84 (95% CI: 0.75-0.99) per 100 menstrual cycles increase. Later age at menopause and increasing lifetime cumulative number of menstrual cycles decreased the risk on frontal T-axis changes. This supports the view that estrogens may protect against ventricular repolarization disturbances.
Journal of Vascular Surgery, 2004
Objective: Many studies have been published regarding the influence of smoking on the incidence a... more Objective: Many studies have been published regarding the influence of smoking on the incidence and prevalence of peripheral arterial disease (PAD). A systematic review was performed to establish the magnitude of the effect of smoking on the development of PAD, and a possible dose-response relationship. Methods: English-language articles were reviewed by 2 observers using a standardized form, and were summarized in tabular form. Data were extracted by 2 independent observers. Where possible, outcome data, expressed in terms of prevalence or incidence, were recalculated as odds ratio or relative risk, with never-smokers as the reference group, or if this was not available the nonsmoker group. Most studies did not provide primary data. Therefore the weighted means were reported as a summary estimate, provided that a funnel plot between sample size and observed effect size made publication bias unlikely. Results: Sixteen articles describing 17 studies were included in the analysis. Four of the studies were prospective, and 13 were cross-sectional. The prevalence of symptomatic PAD was increased 2.3-fold in current smokers. Even in former smokers the prevalence was substantially increased by a factor of 2.6. A clear dose-response relationship, with a strong increase in risk for PAD in heavy smokers was observed. In countries where approximately 30% of the population are smokers, 50% of PAD can be attributed to smoking.
Journal of Vascular Surgery, 2005
Objective: Smoking is the major risk factor associated with the development and progression of pe... more Objective: Smoking is the major risk factor associated with the development and progression of peripheral arterial disease (PAD). To establish the best estimate of the effect of smoking, smoking cessation, and the dose-response relationship on the patency of lower extremity bypass grafts, we performed a systematic review. Methods: A search of medical articles and reviews relating to the influence of smoking on the patency of arterial reconstructive grafts in patients with PAD was made. Studies considered for inclusion were those that evaluated the influence of smoking on the primary, secondary, or cumulative patency rates of arterial reconstructive surgery in the lower extremities in patients with PAD. Primary data were used to calculate summary estimates with standard meta-analysis techniques.
Journal of Electrocardiology, 2008
Introduction: Frontal T axis and spatial QRS-T angle are both measures of disturbances in ventric... more Introduction: Frontal T axis and spatial QRS-T angle are both measures of disturbances in ventricular repolarization and depolarization. We determined whether increased blood pressure is a risk factor for changes in these parameters in postmenopausal women free of left ventricular hypertrophy. Materials and Methods: This cross-sectional study included 969 women. A standard 12-lead electrocardiogram (ECG) was recorded, and frontal T axes and spatial QRS-T angles were computed from vectorcardiography. Logistic regression analysis was used to assess the relationship between systolic and diastolic blood pressures on the one hand and both ECG parameters on the other. Results: Odds ratios were 1.08 (95% confidence interval [CI], 0.99-1.18) and 1.12 (95% CI, 1.03-1.23) per 10 mm Hg systolic blood pressure for frontal T axis and QRS-T angle, respectively. These values were 1.05 (95% CI, 0.95-1.16) and 1.12 (95% CI, 1.02-1.23) per 5 mm Hg diastolic blood pressure for frontal T-axis and QRS-T angle, respectively. Conclusion: Elevated blood pressure may lead to ventricular depolarization and repolarization disturbances before overt ECG left ventricular hypertrophy has developed.
Journal of Clinical Epidemiology, 2005
Background and Objective: To investigate which method of ankle-arm index (AAI) measurement in ter... more Background and Objective: To investigate which method of ankle-arm index (AAI) measurement in terms of selected arteries and blood pressure devices yields the highest reproducibility.
Uploads
Papers by Marie-louise Bartelink