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Amsterdam-Zuidoost, Netherlands

The number of Laparoscopic Roux-en-Y Gastric Bypass (LRYGB) procedures for morbid obesity and type 2 diabetes mellitus will increase worldwide, and therefore, an increase in perioperative morbidity can be anticipated. The authors present three cases based on different complications after LRYGB to demonstrate the diagnostic challenge that clinicians face in this particular group of patients. Also, a review of the literature covering the value of different imaging in these particular cases is provided by the authors. The role of imaging in the diagnostic process is discussed. Source


Theuns D.A.M.J.,Erasmus MC | Elvan A.,Isala Klinieken | De Voogt W.,St Lucas Andreas Hospital | De Cock C.C.,VU University Amsterdam | And 2 more authors.
Circulation: Arrhythmia and Electrophysiology | Year: 2012

Background: The Riata family of implantable cardioverter-defibrillator (ICD) leads is prone to a specific insulation abrasion characterized by externalization of conductor cables. The objective of this study was to determine the prevalence of externalized conductors and electrical abnormalities in Riata ICD leads by fluoroscopic screening and standard ICD interrogation. Methods and Results: All ICD implantation centers were contacted by the Netherlands Heart Rhythm Association Device Advisory Committee to identify all patients with an active Riata ICD lead and to perform fluoroscopic screening of the lead. In addition, the electrical integrity of the lead was assessed. As of March 1, 2012, data for 1029 active Riata leads were available; 47% of these were 8-F Riata and 53% were 7-F Riata ST. Externalized conductors were observed in 147 leads (14.3%). Proportion of externalized conductors was higher in 8-F Riata compared with 7-F Riata ST (21.4% vs 8.0%; P<0.001). Median time from implantation to detection of externalized conductors was 65.3 months. The estimated rates of externalized conductors were 6.9% and 36.6% at 5 and 8 years after implantation, respectively. Of the 147 leads with externalized conductors, 10.9% had abnormal electrical parameters vs 3.5% in nonexternalized leads (P<0.001). Conclusions: The prevalence of externalized conductors in Riata leads is significantly high (14.3%) using fluoroscopic screening. The majority of externalized conductors are not detectable with standard ICD interrogation. Screening with fluoroscopy is reasonable. © 2012 American Heart Association, Inc. Source


Verhave G.,Medical Center | Siegert C.E.H.,St Lucas Andreas Hospital
Netherlands Journal of Medicine | Year: 2010

There is increasing evidence for health benefits accomplished by activated vitamin D through interaction with the vitamin D receptor (VDR) that go beyond calcium and bone homeostasis and regulation of parathyroid hormone (PTH) secretion. treatment with vitamin D receptor agonists (VDRAs) is associated with reduced mortality in (pre)dialysis patients. interestingly, these relations are independent of Pth levels and calcium × phosphorus product. this suggests the presence of biological functions of vitamin D that are independent of its interaction with the parathyroid glands. because chronic kidney disease leads to increased cardiovascular mortality, mechanisms in which VDRAs can influence cardiovascular disease are discussed. These mechanisms comprise the potential ameliorating effects of VDRAs on atherosclerosis, arterial media calcification, cardiac hypertrophy, the renin-angiotensin system and thrombosis. Moreover, treatment strategies with VDRAs are discussed together with several recent observational studies. treatment advice consists of correction of 25(OH) vitamin D deficiency, low-dose calcitriol in patients with secondary hyperparathyroidism, and activated vitamin D analogues may be indicated when higher doses are needed to suppress PTH secretion. new insights into biological and clinical effects of VDRAs may broaden the patient group that may benefit from VDRA treatment to patients with creatinine clearances in the 30 to 60 ml/min range. © Van Zuiden Communications B.V. Source


Teunissen P.W.,Maastricht University | Westerman M.,St Lucas Andreas Hospital
Medical Education | Year: 2011

Objectives The alleged medical education continuum is interrupted by a number of major transitions. After starting medical school, the first transition students encounter is that from non clinical to clinical training. The second transition is that of graduated student to junior doctor or specialist trainee, and the third concerns the specialist trainee's transition to medical specialist. As a first step towards a better understanding of the effects of transitions, this paper provides a critical overview of how these transitions have been conceptualised in the medical education domain. The findings are complemented with perspectives from the fields of transitional psychology and organisational socialisation. The transition into medical school is not reviewed.Methods Using the term 'transition', six leading medical education journals were searched for relevant articles. A snowballing technique on the reference lists of the 44 relevant articles yielded 29 additional publications. Studies were reviewed and categorised as representing objectifying, clarifying, or descriptive and/or justifying research.Results When students enter clinical training, they need to relearn what they thought they knew and they must learn new things in a more self directed way. As junior doctors or specialist trainees, their main challenges involve handling the many responsibilities that accompany the delivery of patient care while simultaneously learning from the process of providing that care. As medical specialists, new non medical tasks and decisions on how to delegate responsibilities become issues.Conclusions Research on transitions has objectified the challenges students and doctors face. Clarifying studies often lack conceptual frameworks that could help us to gain deeper insight into the observed phenomena. Psychology offers valuable theoretical perspectives that are applicable to medical education transitions. To transform a transition from a threat to a learning opportunity, medical education should assist students and doctors in developing the coping skills they need to effectively deal with the challenges presented by new environments. © Blackwell Publishing Ltd 2010. Source


Tijdink J.K.,VU University Amsterdam | Vergouwen A.C.M.,St Lucas Andreas Hospital | Smulders Y.M.,VU University Amsterdam
BMC Medical Education | Year: 2014

Background: Although job-related burnout and its core feature emotional exhaustion are common among medical professionals and compromise job satisfaction and professional performance, they have never been systematically studied in medical professors, who have central positions in academic medicine.Methods. We performed an online nationwide survey inviting all 1206 medical professors in The Netherlands to participate. They were asked to fill out the Maslach Burnout Inventory, a 'professional engagement' inventory, and to provide demographic and job-specific data.Results: A total of 437 Professors completed the questionnaire. Nearly one quarter (23.8%) scored above the cut-off used for the definition of emotional exhaustion. Factors related to being in an early career stage (i.e. lower age, fewer years since appointment, having homeliving children, having a relatively low Hirsch index) were significantly associated with higher emotional exhaustion scores. There was a significant inverse correlation between emotional exhaustion and the level of professional engagement.Conclusions: Early career medical professors have higher scores on emotional exhaustion and may be prone for developing burnout. Based upon this finding, preventive strategies to prevent burnout could be targeted to young professors. © 2014Tijdink et al.; licensee BioMed Central Ltd. Source

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