Practical Experience with the Use of Electronic Headache Diaries and Video Consultations in Migraine Care from a Longitudinal Cohort Study.

Background: Telemedicine offers a promising solution to enhance the delivery and personalization of headache care. Integrating electronic (e-)tools enables the objective monitoring of migraine. Objectives: This study aims to demonstrate the relevance of e-tools for personalized headache care, assess patient and caregiver compliance and satisfaction, and present their use in enhancing care. Methods: Firstly, a systematic review was performed to validate the diagnostic accuracy of e-diaries for diagnosing migraine. Secondly, we collected e-diary data prospectively from diagnosed adult migraine patients at the Leiden Headache Center. Finally, questionnaires were sent to evaluate satisfaction of patients and health care providers with the Leiden e-headache diary and video consultations. Results: In the systematic review, the Leiden Headache Center's e-diary was the only validated tool. Patients (n = 1,009) were followed for a median of 181 days (interquartile range [IQR] 84-240). Compliance was 96.4% (IQR 85.2 - 99.1%), with 10.8% of days missing. Factors positively associated with compliance were older age (p < 0.001), female sex (p < 0.001), higher e-diary grade (p < 0.001), and clinical use (p = 0.04). The e-diary received a median score of 8/10 and was well-liked by patients (n = 535) and providers (n = 23). Video consultations were a good alternative for physical visits according to 76.9% of patients and 84.6% of providers. Conclusion: Validated e-headache diaries and video consultations in telemedicine enhance headache care accessibility, providing convenient care at preferred times and locations.

Incident peptic ulcers and concomitant treatment of direct oral anticoagulants and oral bisphosphonates-a real-world cohort study.

Oral bisphosphonates and direct oral anticoagulants are related to upper gastrointestinal ulcers. The present study investigated whether concomitant use of these drugs increase the risk of upper gastrointestinal ulcers and report no increased risk of upper gastrointestinal ulcers compared to the use of either drug alone, when individuals with previous upper gastrointestinal ulcers are excluded. INTRODUCTION: This study examines whether concomitant use of oral bisphosphonates (oBP) and direct oral anticoagulants (DOAC) increases the risk of peptic ulcers more than any drug alone. METHODS: A population-based cohort study was performed. We sampled a cohort of oBP and DOAC users from a sample of 2,622,742 individuals, consisting of diabetes patients and age- and gender-matched controls, obtained from the Danish National Patient Register. The exposures were concomitant use of oBP and DOAC and single use of DOAC and single use of oBP. The primary endpoint was the first incident peptic ulcer. Information on exposure and outcome were collected from national registries. The period of observation was from 01.01.2008 until 31.12.2018. Unadjusted and adjusted Cox regressions were performed. RESULTS: 8077 individuals received concomitant treatment with DOAC and oBP; 96,451 individuals used DOAC and no oBP; and 118,675 used oBP and no DOAC. The mean duration of follow-up was 1.9 years for concomitant users, 2.5 years for DOAC users, and 4.5 years for oBP users. A total of 4742 individuals with incident peptic ulcers were collected. We observed an increased risk of incident ulcer in users of DOAC and oBP compared to single DOAC treatment in the adjusted analysis (HR = 1.23, 95% CI: 1.03; 1.48). However, the effects were abolished when excluding individuals with a previous ulcer. We observed an increased risk of incident ulcer in users of DOAC and oBP compared to users of oBP in the adjusted model (HR = 1.34, 95% CI: 1.11; 1.63). CONCLUSION: Based on our results, concomitant use of oBP and DOAC is associated with a slight increase in the risk of peptic ulcers compared to either drug alone. The prescribing physician should weigh the slight increased risk of ulcer in concomitant users of oBP and DOAC with beneficial reductions in stroke and fractures.

The Impact of Exercise on Bone Health in Type 2 Diabetes Mellitus-a Systematic Review.

PURPOSE OF REVIEW: Type 2 diabetes mellitus (T2DM) is associated with an increased fracture risk. Weight loss in T2DM management may result in lowering of bone mass. In this systematic literature review, we aimed to investigate how exercise affects bone health in people with T2DM. Furthermore, we examined the types of exercise with the potential to prevent and treat bone fragility in people with T2DM. RECENT FINDINGS: Exercise differs in type, mechanical load, and intensity, as does the osteogenic response to exercise. Aerobic exercise improves metabolic health in people with T2DM. However, the weight-bearing component of exercise is essential to bone health. Weight loss interventions in T2DM induce a loss of bone mass that may be attenuated if accompanied by resistance or weight-bearing exercise. Combination of weight-bearing aerobic and resistance exercise seems to be preventive against excessive bone loss in people with T2DM. However, evidence is sparse and clinical trials investigating the effects of exercise on bone health in people with T2DM are warranted.

[Requirements for a cross-location biobank IT infrastructure : Survey of stakeholder input on the establishment of a biobank network of the German Biobank Alliance (GBA)]. / Anforderungen an eine standortübergreifende Biobanken-IT-Infrastruktur : Erhebung des Stakeholderinputs zum Aufbau eines Biobankennetzwerks der German Biobank Alliance (GBA).

BACKGROUND: The large number of biobanks within Germany results in a high degree of heterogeneity with regard to the IT components used at the respective locations. Within the German Biobank Alliance (GBA), 13 biobanks implement harmonized processes for the provision of biomaterial and accompanying data. OBJECTIVES: The networking of the individual biobanks and the associated harmonisation of the IT infrastructure should facilitate access to biomaterial and related clinical data. METHODS: For this purpose, the relevant target groups were first identified in order to determine their requirements for IT solutions to be developed in a workshop. RESULTS: Of the seven identified interest groups, three were initially invited to a first round of discussions. The stakeholder input expressed resulted in a catalogue of requirements with regard to IT support for (i) a sample and data request, (ii) the handling of patient consent and inclusion, and (iii) the subsequent evaluation of the sample and data request. CONCLUSIONS: The next step is to design the IT solutions as prototypes based on these requirements. In parallel, further user groups are being surveyed in order to be able to further concretise the specifications for development.

Can LDL cholesterol be too low? Possible risks of extremely low levels.

Following the continuous accumulation of evidence supporting the beneficial role of reducing low-density lipoprotein cholesterol (LDL-C) levels in the treatment and prevention of atherosclerotic cardiovascular disease and its complications, therapeutic possibilities now exist to lower LDL-C to very low levels, similar to or even lower than those seen in newborns and nonhuman species. In addition to the important task of evaluating potential side effects of such treatments, the question arises whether extremely low LDL-C levels per se may provoke adverse effects in humans. In this review, we summarize information from studies of human cellular and organ physiology, phenotypic characterization of rare genetic diseases of lipid metabolism, and experience from clinical trials. Specifically, we emphasize the importance of the robustness of the regulatory systems that maintain balanced fluxes and levels of cholesterol at both cellular and organismal levels. Even at extremely low LDL-C levels, critical capacities of steroid hormone and bile acid production are preserved, and the presence of a cholesterol blood-brain barrier protects cells in the central nervous system. Apparent relationships sometimes reported between less pronounced low LDL-C levels and disease states such as cancer, depression, infectious disease and others can generally be explained as secondary phenomena. Drug-related side effects including an increased propensity for development of type 2 diabetes occur during statin treatment, whilst further evaluation of more potent LDL-lowering treatments such as PCSK9 inhibitors is needed. Experience from the recently reported and ongoing large event-driven trials are of great interest, and further evaluation including careful analysis of cognitive functions will be important.

Urinary incontinence in the Netherlands: Prevalence and associated risk factors in adults.

AIMS: To determine the prevalence and risk factors associated with urinary incontinence (UI) among adults in the Netherlands. METHODS: In this cross-sectional study, we included 1257 respondents aged ≥ 18 years, who completed the validated Groningen Defecation and Fecal Continence Checklist. UI was defined as any involuntary leakage of urine during the past 6 months. RESULTS: The prevalence of UI in the total group was 36.8%. Women experienced UI significantly more often than men (49.0% versus 22.6%, respectively, P < 0.001). We found that in both men and women, the prevalence of UI increased with aging (P = 0.003 and P < 0.001, respectively). Remarkably, multivariate analysis revealed that age did not influence UI in men. Men and women aged 18-39 also experienced UI (17.0% and 36.1%, respectively). We established that diabetes mellitus, fecal incontinence, and constipation were risk factors for UI. In women, obesity, vaginal hysterectomies, and vaginal parturition were also risk factors for UI, as was prostate surgery in men. CONCLUSIONS: The prevalence of UI in the Netherlands is high. Medical practitioners should therefore not underestimate this problem, especially among young people. Because the multivariate analysis revealed that in men age did not correlate significantly with UI, we believe that the risk of experiencing UI increases with age because of diseases that are known to lead to UI and not because of aging as a single factor itself. Finally, this study can be used as a reference for patients living in Western-Europe.

A systematic comparison of the closed shoulder reduction techniques.

PURPOSE: To identify the optimal technique for closed reduction for shoulder instability, based on success rates, reduction time, complication risks, and pain level. METHODS: A PubMed and EMBASE query was performed, screening all relevant literature of closed reduction techniques mentioning the success rate written in English, Dutch, German, and Arabic. Studies with a fracture dislocation or lacking information on success rates for closed reduction techniques were excluded. We used the modified Coleman Methodology Score (CMS) to assess the quality of included studies and excluded studies with a poor methodological quality (CMS < 50). Finally, a meta-analysis was performed on the data from all studies combined. RESULTS: 2099 studies were screened for their title and abstract, of which 217 studies were screened full-text and finally 13 studies were included. These studies included 9 randomized controlled trials, 2 retrospective comparative studies, and 2 prospective non-randomized comparative studies. A combined analysis revealed that the scapular manipulation is the most successful (97%), fastest (1.75 min), and least painful reduction technique (VAS 1,47); the "Fast, Reliable, and Safe" (FARES) method also scores high in terms of successful reduction (92%), reduction time (2.24 min), and intra-reduction pain (VAS 1.59); the traction-countertraction technique is highly successful (95%), but slower (6.05 min) and more painful (VAS 4.75). CONCLUSION: For closed reduction of anterior shoulder dislocations, the combined data from the selected studies indicate that scapular manipulation is the most successful and fastest technique, with the shortest mean hospital stay and least pain during reduction. The FARES method seems the best alternative.

Timing of cord clamping in relation to start of breathing or ventilation among depressed neonates-an observational study.

OBJECTIVES: The optimal timing of cord clamping (CC) in nonbreathing neonates needing stabilisation/resuscitation remains unclear. The objective was to describe the relationship between time to CC, initiation of breathing or positive pressure ventilation (PPV) after stimulation/suction and 24-hour neonatal mortality/morbidity. DESIGN: Observational study. SETTING: A rural Tanzanian referral hospital. POPULATION: Depressed nonbreathing newborns. METHODS: Trained research assistants have observed every delivery (November 2009 through January 2014) using stop-watches and recorded data including fetal heart rate; time intervals from birth to CC and start of breathing or PPV and perinatal characteristics. MAIN OUTCOME MEASURES: Twenty-four-hour neonatal outcome (dead, admitted, normal). RESULTS: There were 19 863 liveborn infants; 16 770 (84.4%) initiated spontaneous respirations, 3093 (15.6%) received stimulation/suctioning to initiate breathing. However, 1269 (41.0%) neonates failed to breath and received PPV at 98 ± 66 seconds and CC at 39 ± 35 seconds after birth. Adverse outcomes in neonates receiving PPV included 126 (9.9%) deaths and 100 (7.8%) neonatal admissions. In 1146/1269 (90%) neonates, CC occurred before PPV and was associated with 209 (18%) deaths/admissions. In 98 (8%) neonates, CC followed initiation of PPV with 14 (14%) deaths/admissions (P = 0.328). By logistic modelling, initiation of PPV before versus after CC was not associated with death/admission when adjusted for time to PPV. The risk for death/admission increased by 12% for every 30-second delay in PPV (P = 0.001). CONCLUSIONS: This observational study failed to demonstrate any relationship between time to CC and onset of breathing or initiation of PPV following stimulation/suction, and 24-hour outcome. Delay in initiation of PPV was significantly associated with death/admission. TWEETABLE ABSTRACT: No relationship between time to cord clamp, breathing or ventilation and 24-hour deaths in depressed neonates.

The Bristow-Latarjet procedure, a historical note on a technique in comeback.

The Bristow-Latarjet procedure is a well-known surgical technique designed to treat shoulder instability. In this procedure, the coracoid process is transferred to the glenoid rim, to serve as augmentation of an associated bony defect. Because long-term results following a soft tissue procedure (Bankart repair) reveal that up to 21 and 33 % of the patients might experience recurrent instability and with the advent of the arthroscopic coracoid transfer, there is renewed interest in this procedure to treat shoulder instability. The aim of this study is to provide a historical overview, with emphasis on the original inventors Bristow and Latarjet, the complications and following modifications regarding the surgical approach, the coracoid transfer and the arthroscopic technique. Level of evidence V.

[Characterisation of Postoperative Immune Suppression by Validated Parameters in Visceral Surgery]. / Validierbare Parameter zur Beschreibung der Immunsuppression nach viszeralchirurgischen Eingriffen.

BACKGROUND: Surgical interventions induce changes in postoperative immune competence due to the surgical trauma. Consequently, the immune system cannot react sufficiently in case of septic complications. The dimension of postoperative immune suppression can be determined by HLA-DR surface expression on circulating monocytes. MATERIAL AND METHODS: In the present study relevant literature was researched and patients with visceral and thoracic surgery were included. 17 patients underwent minor surgery, i.e., cholecystectomy, thyroidectomy or hernia repair. 101 patients underwent major surgery, i.e., visceral or thoracic resections. Expression of HLA-DR on circulating monocytes (HLA-DR) was analysed by FACS, whereas gene expression of T-cells was determined by gene-array methods. RESULTS: Postoperative complications or postoperative acquired sepsis were predominantly seen in patients with significantly reduced HLA-DR. The postoperative immune suppression was influenced by the type of operation itself: following colon surgery there was a longer-lasting immune suppression compared to that after surgery on the thorax or rectum. In addition, postoperative immune suppression depends on preoperative existing risk factors: adipositas and further risk factors cause a decrease of HLA-DR. Gene expression analysis revealed a distinct down-regulation of transcriptional activity of T-cells following surgical intervention. This effect is much more pronounced in patients with septic complications. CONCLUSION: The expression of HLA-DR is a useful parameter to describe postoperative immune suppression. Furthermore, regulation of transcriptional T-cell activity can provide additional information on the postoperative immune status.

Biochemical markers of bone turnover in diabetes patients--a meta-analysis, and a methodological study on the effects of glucose on bone markers.

UNLABELLED: This study examined whether markers of bone turnover differ between individuals with and without diabetes. Bone markers showed heterogeneity between studies and were discrepant for markers of bone creation and markers of bone degradation. Bone markers may be of lesser value in diabetes due to heterogeneity. INTRODUCTION: The aim of this meta-analysis was to compare existing literature regarding changes in bone markers among diabetics compared to healthy controls. To exclude that blood glucose levels among diabetes patients could influence the assays used for determining bone turnover markers, a methodological study was performed. METHODS: Medline at Pubmed Embase, Cinahl, Svemed+, Cochrane library, and Bibliotek.dk was searched in August 2012. The studies should examine biochemical bone turnover among diabetes patients in comparison to controls in an observational design. In the methodological study, fasting blood samples were drawn from two individuals. Glucose was added to the blood samples in different concentrations and OC, CTX, and procollagen type 1 amino terminal propeptide were measured after 0, 1, 2, and 3 h. RESULTS: Twenty-two papers fulfilled the criteria for the meta-analysis. From the pooled data in the meta-analysis, the bone markers osteocalcin (OC) (-1.15 ng/ml [-1.78,-0.52]) and C-terminal cross-linked telopeptide (CTX) (-0.14 ng/ml [-0.22, -0.05]) were significantly lower among diabetes patients than non-diabetes patients, however other markers did not differ. All markers displayed very high heterogeneity by I2 statistics. In the methodological study, the addition of glucose did not significantly change the bone markers neither by level of glucose nor with increasing incubation time. CONCLUSION: The dissociative pattern of biochemical bone markers of bone formation and bone resorption present in diabetes patients is thus not caused by glucose per se but may be modulated by unknown factors associated with diabetes mellitus.

Daily self-weighing compared with an active control causes greater negative affective lability in emerging adult women: A randomized trial.

Age-related weight gain prevention may reduce population overweight/obesity. Emerging adulthood is a crucial time to act, as rate of gain accelerates and health habits develop. Evidence supports self-weighing (SW) for preventing weight gain; however, how SW impacts psychological states and behaviors in vulnerable groups is unclear. This study assessed daily SW effects on affective lability, stress, weight-related stress, body satisfaction, and weight-control behaviors. Sixty-nine university females (aged 18-22) were randomized to daily SW or temperature-taking (TT) control. Over 2 weeks, participants completed five daily ecological momentary assessments with their intervention behavior. A graph of their data with a trendline was emailed daily, with no other intervention components. Multilevel mixed models with random effect for day assessed variability in positive/negative affect. Generalized linear mixed models assessed outcomes pre- and post-SW or TT and generalized estimating equations assessed weight-control behaviors. Negative affective lability was significantly greater for SW versus TT. While general stress did not differ between groups, weight-related stress was significantly higher and body satisfaction was significantly lower post-behavior for SW but not TT. Groups did not significantly differ in the number or probability of weight-control behaviors. Caution is advised when recommending self-weighing to prevent weight gain for emerging adults.

Efficacy on resynchronization and longitudinal contractile function comparing His-bundle pacing with conventional biventricular pacing: a substudy to the His-alternative study.

AIMS: His-bundle pacing has emerged as a novel method to deliver cardiac resynchronization therapy (CRT). However, there are no data comparing conventional biventricular (BiV)-CRT with His-CRT with regard to effects on mechanical dyssynchrony and longitudinal contractile function. METHODS AND RESULTS: Patients with symptomatic heart failure, left ventricular ejection fraction ≤ 35%, and left bundle branch block (LBBB) by strict ECG criteria were randomized 1:1 to His-CRT or BiV-CRT. Two-dimensional strain echocardiography was performed prior to CRT implantation and at 6 months after implantation. Differences in changes in mechanical dyssynchrony (standard deviation of time-to-peak in 12 midventricular and basal segments) and regional longitudinal strain in the six left ventricular walls were compared between the BiV-CRT and His-CRT groups.In the on-treatment analysis, 31 received BiV-CRT and 19 His-CRT. In both groups, mechanical dyssynchrony was significantly reduced after 6 months [BiV group from 120 ms (±45) to 63 ms (±22), P < 0.001, and His group from 116 ms (±54) to 49 ms (±11), P < 0.001] but no significant differences in changes could be demonstrated between groups [-9.0 ms (-36; 18), P = 0.50]. Global longitudinal strain (GLS) improved in both groups [BiV group from -9.1% (±2.7) to -10.7% (±2.6), P = 0.02, and His group from -8.6% (±2.1) to -11.1% (±2.0), P < 0.001], but no significant differences in changes could be demonstrated from baseline to follow-up [-0.9% (-2.4; -0.6), P = 0.25] between groups. There were no regional differences between groups. CONCLUSION: In heart failure, patients with LBBB, BiV-CRT, and His-CRT have comparable effects with regard to improvements in mechanical dyssynchrony and longitudinal contractile function.

Managing children with daytime urinary incontinence: a survey of Dutch general practitioners.

BACKGROUND: In the Netherlands, parents of children with daytime urinary incontinence (UI) first consult general practitioners (GPs). However, GPs need more specific guidelines for daytime UI management, resulting in care and referral decisions being made without clear guidance. OBJECTIVES: We aimed to identify Dutch GP considerations when treating and referring a child with daytime UI. METHODS: We invited GPs who referred at least one child aged 4-18 years with daytime UI to secondary care. They were asked to complete a questionnaire about the referred child and the management of daytime UI in general. RESULTS: Of 244 distributed questionnaires, 118 (48.4%) were returned by 94 GPs. Most reported taking a history and performing basic diagnostic tests like urine tests (61.0%) and physical examinations (49.2%) before referral. Treatment mostly involved lifestyle advice, with only 17.8% starting medication. Referrals were usually at the explicit wish of the child/parent (44.9%) or because of symptom persistence despite treatment (39.0%). GPs usually referred children to a paediatrician (n = 99, 83.9%), only referring to a urologist in specific situations. Almost half (41.4%) of the GPs did not feel competent to treat children with daytime UI and more than half (55.7%) wanted a clinical practice guideline. In the discussion, we explore the generalisability of our findings to other countries. CONCLUSION: GPs usually refer children with daytime UI to a paediatrician after a basic diagnostic assessment, usually without offering treatment. Parental or child demand is the primary stimulus for referral.

Surgical trauma and postoperative immune dysfunction.

BACKGROUND: In postoperative sepsis, mortality is increased due to the surgically induced immune dysfunction. Further causes of this traumatic effect on the immune system include burn injuries and polytrauma, as well as endogenous traumata like stroke. Several animal models have been defined to analyse the characteristics of trauma-induced immune suppression. This article will correlate our results from animal studies and clinical observations with the recent literature on postoperative immune suppression. METHODS: The previously described model of surgically induced immune dysfunction (SID) was performed in mice by laparotomy and manipulation of the small intestine in the antegrade direction. Blood samples were collected 6 and 72 h following SID to analyse the white blood cell count and corticosterone levels. To assess the postoperative immune status in humans, we analysed expression of HLA-DR on monocytes of 118 patients by flow cytometry prior to and 24, 48 and 72 h after surgery. RESULTS: The postoperative immune suppression in our SID model is characterised by lymphocytopenia and significantly increased corticosterone levels in mice dependent on the degree of surgical trauma. This is comparable to the postoperative situation in humans: major and especially long-lasting surgery results in a significantly reduced expression of HLA-DR on circulating monocytes. Previous studies describe a similar situation following burn injury and endogenous trauma, i.e. stroke. CONCLUSIONS: We suggest the completion of our previously published sepsis classification due to the immune status at the onset of sepsis: type A as the spontaneously acquired sepsis and type B as sepsis in trauma-induced pre-existing immune suppression.

New tools to reduce radiation exposure during aortic endovascular procedures.

INTRODUCTION: The evolution of endovascular surgery over the past 30 years has made it possible to treat increasingly complex vascular pathologies with an endovascular method. Although this generally speeds up the patient's recovery, the risks of health problems caused by long-term exposure to radioactive radiation increase. This warrants the demand for radiation-reducing tools to reduce radiation exposure during these procedures. AREAS COVERED: For this systematic review Pubmed, Embase and Cochrane library databases were searched on 28 December 2021 to provide an overview of tools that are currently used or have the potential to contribute to reducing radiation exposure during endovascular aortic procedures. In addition, an overview is presented of radiation characteristics of clinical studies comparing a (potential) radiation-reducing device with conventional fluoroscopy use. EXPERT OPINION: Radiation-reducing instruments such as fiber optic shape sensing or electromagnetic tracking devices offer the possibility to further reduce or even eliminate the use of radiation during endovascular procedures. In an era of increasing endovascular interventional complexity and awareness of the health risks of long-term radiation exposure, the use of these technologies could have a major impact on an ongoing challenge to move toward radiation-free endovascular surgery.

Parents' expectations of the outpatient care for daytime urinary incontinence in children: A qualitative study.

INTRODUCTION: Daytime urinary incontinence (UI) can have an enormous impact on a child's life, lowering both self-esteem and quality of life. Although most children start therapy after their first visit to our outpatient clinic, no studies have reported on parents' or patients' expectations of care for daytime UI in this setting. OBJECTIVE: We aimed to explore the expectations of the parents of children referred to an outpatient clinic for daytime UI. STUDY DESIGN: This was a qualitative study that involved performing semi-structured interviews with the parents of children who had been referred for daytime UI (with or without nocturnal enuresis). Interviews took place between July 2018 and October 2018 and continued until saturation was reached. The results were transcribed verbatim and analyzed according to Giorgi's strategy of phenomenological data analysis. RESULTS: Nine parents of children, aged 5-12 years old, were interviewed, revealing "(Experienced) Health," Self-management," and "Social Impact" as the main themes that influenced parental expectations. All parents wanted to know if there was a medical explanation for UI, some were satisfied when diagnostics revealed no underlying condition, and others wanted treatment. Parents expressed no preferences about diagnostics or the content and duration of treatment, but they hoped that any previously attempted ineffective steps would not be repeated. Some parents defined treatment success as their child becoming completely dry, but most stated that learning coping strategies was more important. DISCUSSION: This is the first study to explore the expectations of parents when attending outpatient care for children with daytime UI. We employed a strong theoretical framework with a clear interview guide. The main limitations are that we only interviewed parents and that this was a qualitative study, precluding the drawing of firm conclusions. Nevertheless, our results point to the need for quantitative evaluation. CONCLUSION: Expectations seem to be influenced by (experienced) health, efforts at self-management, and the social impact of UI, making it critical that these themes are addressed. It was interesting to note that parents do not always attend outpatient departments with the goal of completely resolving daytime UI. Instead, some only want to know if there is an underlying medical condition or want to reduce the social impact by learning coping mechanisms. Excluding underlying medical conditions may therefore stimulate acceptance of watchful waiting without the need to start treatment.

Role of chemical stimulation of the duodenum in dyspeptic symptom generation.

The response to chemical stimuli such as acid, nutrients, and capsaicin at the level of the duodenum is increasingly recognized as important in the etiology of dyspeptic symptoms. Increased duodenal acid exposure has been reported for patients with dyspeptic symptoms. Duodenal hypersensitivity to acid and the enhancing effect of duodenal acid on gastroduodenal mechanosensitivity may also contribute to dyspeptic symptom generation. Serotonergic signaling pathways may be involved in acid-induced dyspeptic symptoms. As for nutrients, lipid has been unequivocally shown to have a function in the pathogenesis of dyspeptic symptoms. Cholecystokinin (CCK) is an important mediator of the effects of duodenal lipid on gastroduodenal sensorimotor activities. It is unclear whether CCK hypersecretion or hypersensitivity to CCK is responsible for symptoms in dyspeptic patients. The presence of capsaicin in the duodenum evokes symptoms and affects gastric sensorimotor function. In patients with dyspepsia, capsaicin-induced symptoms appeared to occur earlier and to be more severe, however the effects of duodenal infusion and putative consequent gastric sensorimotor abnormalities have not been examined. Capsaicin activates transient receptor potential ion channel of the vanilloid type I, which can also be activated and sensitized by acid. The interaction between the different chemical stimuli is complex and has not yet been studied in patients with dyspeptic symptoms. In conclusion, the mechanisms underlying an enhanced response to duodenal chemical stimulation in patients with dyspeptic symptoms are partially understood. At the level of the duodenum, abnormalities may exist in stimulus intensity, mucosal mRNA expression, biosynthesis, release, or inactivation of mucosal mediators, or receptor expression on afferent nerve endings. Elucidation of the abnormalities involved will provide a basis for rational treatment of dyspeptic symptoms.