Publications by authors named "Klok T"

Article Synopsis
  • Early introduction of peanut for high-risk infants may help prevent peanut allergies, but it's unclear how to best diagnose reactions reported at home.
  • In a study of 186 infants who had reactions to peanut, 69% showed sensitization, but 73% of the oral food challenges were negative, allowing safe home introduction of peanut.
  • After 6 months, 96% of infants continued consuming peanut regularly without reactions, indicating that testing can prevent misdiagnosis and support long-term tolerance.*
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Article Synopsis
  • The rising prevalence of food allergies is a significant global health issue, primarily managed through allergen avoidance and emergency medications.
  • Research shows that oral immunotherapy (OIT) can help desensitize patients, but most don’t achieve lasting immunity.
  • Studies suggest that starting OIT in very young children may lead to better outcomes, indicating an early intervention might help prevent persistent food allergies by harnessing the immune system's plasticity during early life.
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Article Synopsis
  • Early introduction of peanuts can help prevent peanut allergies in infants, but the ideal timing for introduction is still uncertain, especially for those with prior sensitization.
  • A study involving infants at pediatric centers in the Netherlands found that a significant portion (23%) were sensitized to peanuts before their first exposure, with certain risk factors like age and eczema severity affecting outcomes.
  • The findings recommend introducing peanuts before 8 months of age, particularly in infants with moderate to severe eczema, to minimize the risk of allergic reactions during the first exposure.
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Article Synopsis
  • The APAIT checklist has been created to standardize how adherence and persistence to allergen immunotherapy (AIT) are reported in retrospective studies.
  • It consolidates elements from five different study checklists and was developed with input from experts in allergy and healthcare from North America and Europe.
  • The checklist outlines essential categories and highlights the need for clarity in reporting while addressing potential biases that may affect study outcomes.
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A good nasal passage is crucial for neonates and infants, as they rely on obligate nasal breathing. Feeding problems and dyspnoea are commonly seen in infants with nasal obstruction.In this article, we emphasize the importance of relieving nasal congestion caused by an infection.

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Objective: Patients with cutaneous melanoma and a positive sentinel node (SN) are currently eligible for adjuvant treatment with targeted therapy and immune checkpoint inhibitors. Near-infrared (NIR) fluorescence imaging could be an alternative and less invasive tool for SN biopsy to select patients for adjuvant treatment. One potential target for NIR is the mesenchymal-epithelial transition factor (MET).

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Background: Previous studies have shown that preoperative anaemia in patients undergoing cardiac surgery is associated with adverse outcomes. However, most of these studies were retrospective, had a relatively small sample size, and were from a single centre. The aim of this study was to analyse the relationship between the severity of preoperative anaemia and short- and long-term mortality and morbidity in a large multicentre national cohort of patients undergoing cardiac surgery.

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Disagreement exists between asthma guidelines on the routine use of allergy testing in the diagnostic work-up of a child with persistent asthma, although the important role of inhalant allergy in the pathophysiology of asthma and allergic rhinitis is undisputed. The usefulness of screening for inhalant allergies in asthma is connected to the efficacy of allergen reduction measures and specific immunotherapy, both of which appear to be more effective in children than in adults. Allergen-specific exposure reduction recommendations are therefore an essential part of childhood asthma management.

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Background: Automated reminders are employed frequently to improve guideline adherence, but limitations of automated reminders are becoming more apparent. We studied the reasons for non-adherence in the setting of automated reminders to test the hypothesis that a separate request for a reason in itself may further improve guideline adherence.

Methods: In a previously implemented automated reminder system on prophylaxis for postoperative nausea and vomiting (PONV), we included additional automated reminders requesting a reason for non-adherence.

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Non-adherence occurs at any age, in all chronic diseases, and has a major impact on clinical outcomes. Non-adherence is primarily determined by perceptions of illness and medication beliefs. During puberty, adolescents attain independence from their parents and attach to their peers.

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Background: A higher incidence of lentigo maligna (LM) recurrences on the nose was previously observed in our cohort after non-surgical treatment.

Objectives: To determine histological parameters that might be related to the previously observed higher incidence of LM recurrences on the nose after non-surgical treatment.

Methods: We randomly selected 22 surgical specimens of LM on the nose and 22 on the cheek.

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Aims: Malignant melanoma is the most aggressive form of skin cancer, and metastatic dissemination to regional and visceral sites is responsible for the majority of melanoma-related mortalities. In a recent study by our group, we observed reduced expression of tissue inhibitor of metalloproteinase-3 (TIMP3) in the majority of stage III melanoma samples studied. TIMP3 has been reported as a tumour suppressor in several human malignancies, with reduced expression correlating with poor clinical outcome.

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Objective: To assess the reliability of the Medication Adherence Report Scale (MARS-5) for assessing adherence in clinical practice and research.

Methods: Prospective cohort study following electronically measured inhaled corticosteroids (ICS) adherence for 1 year in 2-13-year-old children with persistent asthma. The relationship between electronically measured adherence and MARS-5 scores (ranging from 5 to 25) was assessed by Spearman's rank correlation coefficient.

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Aims: Several anti-tumour properties have been ascribed to the tissue inhibitor of matrix metalloproteinases-3 (TIMP3) gene, including inhibition of neovascularisation in tumour xenografts. Reduced protein expression has been linked to promoter hypermethylation and allelic loss of heterozygosity in various human malignancies. In melanoma-positive lymph nodes from patients, we evaluated the association between TIMP3 expression, vessel density, macrophage infiltration and potential correlations with disease-free survival (DFS) and overall survival (OS).

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Background And Aims: Inhaled corticosteroids (ICS) reduce growth during the first year of treatment, but this growth suppressing effect does not continue during further treatment. Decreasing adherence may play a role in explaining this. The aim of this study was to examine the relationship between cumulative real exposure (with objectively assessed adherence) to ICS and height growth in children with asthma.

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Introduction: Non-adherence to daily controller medication in childhood asthma is strongly dependent on potentially modifiable factors such as parental illness perceptions and medication beliefs. The extent to which adherence in children can be improved by addressing modifiable determinants of non-adherence has not been studied to date, however. We assessed long-term adherence and its determinants in children with asthma enrolled in a comprehensive asthma care program employing shared decision making with parents.

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Objective: Parents' awareness of their child's asthma may improve by discussing an exercise challenge test (ECT) result with them. We investigated the influence of discussing an ECT result with parents on adherence to inhaled maintenance medication, parental illness perceptions and medication beliefs in young asthmatic children.

Methods: A total of 79 children, 4-7 years old and enrolled in our standard comprehensive asthma care program, performed an ECT to assess exercise induced bronchoconstriction (EIB).

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Adherence to daily inhaled corticosteroid therapy is a key determinant of asthma control. Therefore, improving adherence to inhaled corticosteroids is the most effective method through which healthcare providers can help children with uncontrolled asthma. However, identifying non-adherent patients is difficult, and electronic monitoring is the only reliable method to assess adherence.

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Objective: To investigate changes in inhaled corticosteroids adherence, both before and after a scheduled follow-up visit, in young children in a comprehensive asthma management program.

Study Design: One-year prospective follow-up study in 104 asthmatic children (mean age 4.8 years).

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Objective: Effective self-management and adherence to inhaled corticosteroids are issues of particular interest in comprehensive asthma care. In spite of this care, however, a number of parents and children remain non-adherent. The reasons for this non-adherence have up till now been unknown, because previous adherence studies have based their findings either on populations with poor adherence or on unreliable self-reported adherence.

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Although guideline-based asthma care and adherence to inhaled corticosteroids are predictors of asthma control, the role of adherence in maintaining long-term asthma control is largely unknown. This study was designed to explore the relationship between adherence to inhaled corticosteroids and long-term asthma control in young children with asthma. In this observational study, 81 2-6-year-old asthmatic children, using inhaled corticosteroids, closely followed-up in a programme with extensive self-management training, were enrolled.

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Objectives: To evaluate general practitioners' (GPs') prescribing behaviour as a determinant of persistence with and adherence to inhaled corticosteroids (ICS) in children.

Design: Prospective observational study of persistence with and adherence to ICS followed by a focus group study of the GPs prescribing this treatment.

Setting: 7 primary care practices in the area of Zwolle, the Netherlands.

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Nonadherence to maintenance medication is common in paediatric chronic conditions. Despite the common belief that nonadherence is therapy-resistant, and the apparent lack of evidence for successful interventions to improve adherence, there is, in fact, a considerable body of evidence suggesting that adherence can be improved by applying specific communicative consultation skills. These can be summarized as the adherence equation: adherence=follow-up+dialogue+barriers and beliefs+empathy and education => concordance.

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