Henk C.P.M. Van Weert

Prof. Dr. Henk C.P.M. Van Weert

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Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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11 January 2010 in BMC Family Practice
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Journal Article
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OMOtto R Maarsingh
Otto R Maarsingh
JDJacquelien Dros
Jacquelien Dros
FSFrançois G Schellevis
François G Schellevis
HWHenk C.P.M. Van Weert
Henk C.P.M. Van Weert
PBPatrick J Bindels
Patrick J Bindels
HHHenriette E van der Horst
Henriette E van der Horst
Although dizziness in elderly patients is very common in family practice, most prevalence studies on dizziness are community-based and include a study population that is not representative of family practice. The aim of this study was to investigate the prevalence and incidence of dizziness reported by elderly patients in family practice, to describe their final diagnoses as recorded by the family physician, and to compare the clinical characteristics of dizzy patients with those of non-dizzy patients.

24 January 2009 in BMC Public Health
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FSFrans ThM Smits
Frans ThM Smits
HBHenk J Brouwer
Henk J Brouwer
GRGerben ter Riet
Gerben ter Riet
HWHenk C.P.M. Van Weert
Henk C.P.M. Van Weert
General Practitioners spend a disproportionate amount of time on frequent attenders. So far, trials on the effect of interventions on frequent attenders have shown negative results. However, these trials were conducted in short-term frequent attenders. It would be more reasonable to target intervention at persistent frequent attenders. Typical characteristics of persistent frequent attenders, as opposed to 1-year frequent attenders and non-frequent attenders, may generate hypotheses regarding modifiable factors on which new randomized trials may be designed.

16 September 2020 in BMJ
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Journal Article
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SUSteven B Uittenbogaart
Steven B Uittenbogaart
NGNicole Verbiest-Van Gurp
Nicole Verbiest-Van Gurp
WLWim A M Lucassen
Wim A M Lucassen
Bjorn WinkensBjorn Winkens
Bjorn Winkens
MNMark Nielen
Mark Nielen
HSHenri E.J.H. Stoffers
Henri E.J.H. Stoffers
Objective To investigate whether opportunistic screening in primary care increases the detection of atrial fibrillation compared with usual care. Design Cluster randomised controlled trial. Setting 47 intention-to-screen and 49 usual care primary care practices in the Netherlands, not blinded for allocation; the study was carried out from September 2015 to August 2018. Participants In each practice, a fixed sample of 200 eligible patients, aged 65 or older, with no known history of atrial fibrillation in the electronic medical record system, were randomly selected. In the intention-to-screen group, 9218 patients eligible for screening were included, 55.0% women, mean age 75.2 years. In the usual care group, 9526 patients were eligible for screening, 54.3% women, mean age 75.0 years. Interventions Opportunistic screening (that is, screening in patients visiting their general practice) consisted of three index tests: pulse palpation, electronic blood pressure measurement with an atrial fibrillation algorithm, and electrocardiography (ECG) with a handheld single lead electrocardiographic device. The reference standard was 12 lead ECG, performed in patients with at least one positive index test and in a sample of patients (10%) with three negative tests. If 12 lead ECG showed no atrial fibrillation, patients were invited for more screening by continuous monitoring with a Holter electrocardiograph for two weeks. Main outcome measures Difference in the detection rate of newly diagnosed atrial fibrillation over one year in intention-to-screen versus usual care practices. Results Follow-up was complete for 8874 patients in the intention-to-screen practices and for 9102 patients in the usual care practices. 144 (1.62%) new diagnoses of atrial fibrillation in the intention-to-screen group versus 139 (1.53%) in the usual care group were found (adjusted odds ratio 1.06 (95% confidence interval 0.84 to 1.35)). Of 9218 eligible patients in the intention-to-screen group, 4106 (44.5%) participated in the screening protocol. In these patients, 12 lead ECG detected newly diagnosed atrial fibrillation in 26 patients (0.63%). In the 266 patients who continued with Holter monitoring, four more diagnoses of atrial fibrillation were found. Conclusions Opportunistic screening for atrial fibrillation in primary care patients, aged 65 and over, did not increase the detection rate of atrial fibrillation, which implies that opportunistic screening for atrial fibrillation is not useful in this setting. Trial registration Netherlands Trial Register No NL4776 (old NTR4914).

13 September 2019 in Cardiovascular Drugs and Therapy
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RHRalf E. Harskamp
Ralf E. Harskamp
MTMartina Teichert
Martina Teichert
WLWim A. M. Lucassen
Wim A. M. Lucassen
HWHenk C.P.M. Van Weert
Henk C.P.M. Van Weert
RLRenato da Rocha Lopes
Renato da Rocha Lopes
Purpose: To study whether polypharmacy or drug–drug interactions have differential effect on safety and efficacy in patients treated with direct oral anticoagulants (DOACs) versus warfarin. Methods: We performed a systematic review and meta-analysis of studies that randomized patients with atrial fibrillation to DOACs or warfarin stratified by the number of concomitant drugs. Outcomes included stroke or systemic embolism (SE), all-cause mortality, major bleeding, and intracranial hemorrhage. Risk ratios (RR) were calculated and Mantel-Haenszel random effects were applied. Results: Two high-quality studies were eligible, including 32,465 participants who received apixaban, rivaroxaban, or warfarin, with a median follow-up of 1.9 years. Of participants, 29% used < 5 drugs, 55% used 5–9 drugs, and 16% used ≥ 10 drugs. Drugs interacting with DOACs (P-glycoprotein/CYP3A4) were used by 6460 (20%) of patients. Patients with higher number of drugs (0–4 vs 5–9 vs ≥ 10) had higher rates of mortality (5.8%, 7.9%, 10.0%) and major bleeding (3.4%, 4.8%, 7.7%). Comparative efficacy or safety of DOACs versus warfarin was not affected by polypharmacy status or P-glycoprotein/CYP3A4 inhibitor use. However, the presence of polypharmacy (p = 0.001) or glycoprotein/CYP3A4-modulating drugs (p = 0.03) was correlated with increased risk of major bleeding when compared with warfarin. Overall, DOAC use was associated with a lower risk of stroke/SE (RR, 0.84; 95%CI, 0.74–0.94), all-cause mortality (RR, 0.91; 95%CI, 0.84–0.98), and intracranial hemorrhage (RR, 0.51; 95%CI, 0.38–0.70) compared with warfarin. Conclusions: DOACs were more effective than warfarin, and at least as safe. Polypharmacy was associated with adverse outcomes and attenuated the advantage in risk of major bleeding among rivaroxaban users, particularly in the presence of P-glycoprotein/CYP3A4-modulating drugs.

1 January 2011 in Health and Quality of Life Outcomes
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JDJacquelien Dros
Jacquelien Dros
OMOtto R Maarsingh
Otto R Maarsingh
LBLeo Beem
Leo Beem
HHHenriëtte E van der Horst
Henriëtte E van der Horst
GRGerben ter Riet
Gerben ter Riet
HWHenk C.P.M. Van Weert
Henk C.P.M. Van Weert
Dizziness is a common and often disabling symptom, but diagnosis often remains unclear; especially in older persons where dizziness tends to be multicausal. Research on dizziness-related impairment might provide options for a functional oriented approach, with less focus on finding diagnoses. We therefore studied dizziness-related impairment in older primary care patients and aimed to identify indicators related to this impairment.

10 December 2014 in BMC Health Services Research
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AOAina O Odusola
Aina O Odusola
MHMarleen Hendriks
Marleen Hendriks
CSConstance Schultsz
Constance Schultsz
OBOladimeji A Bolarinwa
Oladimeji A Bolarinwa
TATanimola Akande
Tanimola Akande
JHJoke A Haafkens
Joke A Haafkens
Universal health care coverage has been identified as a promising strategy for improving hypertension treatment and control rates in sub Saharan Africa (SSA). Yet, even when quality care is accessible, poor adherence can compromise treatment outcomes. To provide information for adherence support interventions, this study explored what low income patients who received hypertension care in the context of a community based health insurance program in Nigeria perceive as inhibitors and facilitators for adhering to pharmacotherapy and healthy behaviors. We conducted a qualitative interview study with 40 insured hypertensive patients who had received hypertension care for > 1 year in a rural primary care hospital in Kwara state, Nigeria. Supported by MAXQDA software, interview transcripts were inductively coded. Codes were then grouped into concepts and thematic categories, leading to matrices for inhibitors and facilitators of treatment adherence. Important patient-identified facilitators of medication adherence included: affordability of care (through health insurance); trust in orthodox “western” medicines; trust in Doctor; dreaded dangers of hypertension; and use of prayer to support efficacy of pills. Inhibitors of medication adherence included: inconvenient clinic operating hours; long waiting times; under-dispensing of prescriptions; side-effects of pills; faith motivated changes of medication regimen; herbal supplementation/substitution of pills; and ignorance that regular use is needed. Local practices and norms were identified as important inhibitors to the uptake of healthier behaviors (e.g. use of salt for food preservation; negative cultural images associated with decreased body size and physical activity). Important factors facilitating such behaviors were the awareness that salt substitutes and products for composing healthier meals were cheaply available at local markets and that exercise could be integrated in people’s daily activities (e.g. farming, yam pounding, and household chores). With a better understanding of patient perceived inhibitors and facilitators of adherence to hypertension treatment, this study provides information for patient education and health system level interventions that can be designed to improve compliance. ISRCTN47894401 .