Pittet valérie

Lausanne University Hospital | CHUV

Objectives of the study: There is little guidance regarding the impact of alcohol and cannabis on the clinical course of inflammatory bowel disease. The aim of this study was to assess the prevalence, sociodemographic characteristics and impact of alcohol and cannabis use on the clinical course of the disease. Methods: We performed an analysis o...

Objective We aimed to assess if emergency department (ED) syndromic surveillance during the first and second waves of the COVID-19 outbreak could have improved our surveillance system. Design and settings We did an observational study using aggregated data from the ED of a university hospital and public health authorities in western Switzerland....

IntroductionTreatment failures in spine surgery are often attributable to poor patient selection and the application of inappropriate treatment. We used published appropriate use criteria (AUC) to evaluate the appropriateness of surgery in a large group of patients operated for lumbar degenerative spondylolisthesis (LDS) and to evaluate its associa...

Background: Eosinophilic esophagitis is a chronic inflammatory gastrointestinal disease with a high prevalence in younger, atopic males. In our clinical practice, we observed a striking preponderance of patients having a high educational background. The purposes of this study were first to assess the level of education of eosinophilic esophagitis...

Background: Fatigue is a common symptom of chronic inflammation, including inflammatory bowel disease (IBD), resulting in significant impairment in quality of life. Aims: To identify the prevalence of fatigue in a large IBD cohort compared to the general population, address risk factors, and evaluate its impact on daily life. Methods: We evaluated...

Background Vedolizumab (VDZ), a humanized monoclonal antibody against α4β7-integrin, has shown efficacy in inflammatory bowel disease (IBD). It is of importance to assess the mid- to long-term efficacy of VDZ using real-life data. Objective Our study aimed to determine the efficacy of VDZ in patients with IBD with and without prior exposure to ant...

Background: Long-standing ulcerative colitis has been associated with an increased risk of colorectal cancer (CRC). Current guidelines recommend endoscopic CRC screening after 8 years of disease duration. The objectives of our study were to assess the adherence to recommendations and the quality of endoscopic procedure in long-standing ulcerative...

BACKGROUND Over the last three decades, the use of outpatient surgery has been steadily increasing. Simultaneously, there has been an inciting movement to measure and improve healthcare quality and safety. Nevertheless, anaesthesia-related morbidity remains significant. We aimed to evaluate the incidence of intraoperative adverse events (IAEs) occ...

Introduction: The pathophysiology of inflammatory bowel disease (IBD) is incompletely understood. Current concepts imply that environmental factors (EFs) trigger disease onset as well as flares in genetically susceptible individuals. Objective: The objective of this study is to analyze the association between IBD and various EFs, which may influ...

Immune-mediated diseases typically show a female preponderance. Looking at all autoimmune diseases combined, 8 of 10 patients are females. Although not as prominent, gender differences in inflammatory bowel disease (IBD) have been reported for epidemiology, disease presentation, disease course and complications, medical and surgical therapies, adhe...

Background This study aimed to evaluate the clinical outcomes for adults diagnosed with Crohn’s disease (CD) who started biologic treatments within 2 years of diagnosis (early initiation) compared with those who started biologics >2 years after diagnosis or who did not receive any biologic treatment during the period of observation (late/no biologi...

Background Environmental factors, including sleep disturbances, have been associated with the risk of flare in inflammatory bowel disease (IBD). Symptoms, treatment side effects and pro-inflammatory status have been shown to have an effect on sleep quality and duration. Previous studies showed that around 44% of IBD patients suffer from sleep disor...

Background Data of large cohort studies on the fate of perianal fistulizing Crohn’s disease (CD) is scarce. We aimed to evaluate the prevalence and natural history of perianal fistulas in adults with Crohn’s disease (CD). Methods Data from the Swiss IBD cohort study were analysed. The Swiss IBD Cohort study includes since 2006 IBD patients, follow...

Background Patient-reported disease perceptions may influence disease management thus health outcomes. Previous studies showed that concerns and expectations are numerous in IBD patients. Such perceptions may be indicative of overall well-being, thus of individual quality of life. We aimed at assessing if quality of life and its perceptions may pre...

Background: Extraintestinal manifestations (EIM) contribute significantly to the burden of disease in inflammatory bowel disease (IBD). Pain is a leading symptom in IBD and could be seen as an EIM itself. Treatment of IBD associated pain is challenging and insufficiently studied. A better knowledge on the association of pain and IBD specific treat...

Background: Many inflammatory bowel disease (IBD) patients follow a restrictive diet due to perceived positive effects on their symptoms. We assessed the prevalence of vegetarian (VD) and gluten-free diets (GFDs) in IBD patients, the reasons for following such a diet, and whether nutrition has an impact on disease activity and microbiota compositi...

Background Symptom-based patient-reported outcomes (PROs) measurements are currently being investigated and re-assessed with the goal to be more appropriate in clinical trials as well as in daily practice. Our objectives were to assess the prevalence of patient-reported signs, symptoms - as collected in traditional disease activity scores for CD an...

Background Fatigue is a common symptom of patients with chronic inflammatory diseases in general - and specifically in inflammatory bowel disease (IBD) - which results in huge impairment on quality of life of individuals. In spite of its frequency only few studies systematically investigated symptom burden and risk factors for fatigue in IBD. We ai...

Background Vedolizumab (VDZ) a humanised monoclonal antibody against α4β7 integrin is used in Crohn’s disease (CD) and ulcerative colitis (UC). It is still unclear whether biologic-naive patients will respond better to VDZ than TNF-pre-treated patients in a real life setting. Our study aimed to determine the efficacy of VDZ among TNF-pre-treated co...

Background & aims: Inflammatory bowel disease (IBD) scoring systems combine patient-reported data with physicians' observations to determine patient outcomes, but these systems are believed to have limitations. We used real-world data from a large IBD cohort in Switzerland to compare results between patients and healthcare professionals from scori...

Background Patient-reported experience is an important component of a holistic approach to quality of care. Patients’ expectations of treatments and global disease management may indicate their illness representations and their satisfaction and hopes regarding quality of care. Objective To study expectations of patients with inflammatory bowel dis...

Background andAims Vitamin and iron deficiencies are common in patients with inflammatory bowel disease (IBD) as a result of chronic intestinal inflammation, increase in demand, or dietary restrictions. Here, we assessed the frequency of complications in relation to deficiency of iron, folate acid, and vitamin B12 in patients enrolled in the nation...

Background and aims: The prospective, observational Swiss Eosinophilic Esophagitis Cohort Study (SEECS) was set up in 2015 with the following goals in mind: (1) to provide up-to-date epidemiologic data; (2) to assess the appropriateness of care; (3) to evaluate the psychosocial impact; and (4) to foster translational research projects. Data captur...

Background Several studies demonstrate a lower diversity in the gut microbiota of patients with inflammatory bowel disease (IBD). Microbial alterations induced by dietary changes are amongst the key suspected responsible environmental factors to promote an increase in the incidence of IBD, and may adversely impact the course of established disease....

Background Complementary and alternative medicines (CAM) may be defined as treatments that fall outside of conventional healthcare. Patients with IBD often turn to CAM, mainly without discussing it with their physician. We repetitively collect information on patient-reported CAM use in 2007–2016. The aims of this study were to assess main types of...

Background: The Swiss health system is customer-driven with fee-for-service paiement scheme and universal coverage. It is highly performing but expensive and health information systems are scarcely implemented. The Swiss Primary Care Active Monitoring (SPAM) program aims to develop an instrument able to describe the performance and effectiveness o...

Background/aims: Evidence for the effectiveness of methotrexate (MTX) in treating inflammatory bowel disease (IBD) is still incomplete. This study assessed the effectiveness, safety and mucosal healing in IBD patients treated with MTX in the Swiss IBD Cohort. Methods: Efficacy was defined by physician assessment or by CD activity index <150 poin...

Background Inflammatory bowel disease (IBD) is a chronic disease placing a large health and economic burden on health systems worldwide. The treatment landscape is complex with multiple strategies to induce and maintain remission while avoiding long-term complications. The extent to which rising treatment costs, due to expensive biologic agents, ar...

Full literature search. (PDF)

Descriptive information of included studies. (PDF)

Results of the risk of bias assessment. (PDF)

Ulcerative colitis (UC) has a prevalence of 1 in 1000 inhabitants in Switzerland. The diagnosis of UC is based on a typical clinical presentation that involves bloody diarrhea, characteristic endoscopic features with continuous inflammation involving the rectum, and compatible histology. UC develops in genetically susceptible individuals with a dys...

Background Patient-reported disease perceptions are important components to be considered within a holistic model of quality of care. Gender may have an influence on these perceptions. We aimed to explore gender-specific concerns of patients included in a national bilingual inflammatory bowel disease cohort. Methods Following a qualitative study,...

Background: Many IBD patients report restricting their diet due to perceived positive effects on their symptoms despite a current lack of evidence-based nutritional recommendations in this specific population. To date little is known about dietary habits of IBD patients, especially on the prevalence of vegetarian diet (VD) and gluten-free diet (GFD...

Background: There is no symptom-based patient-reported outcomes (PRO) measurement available in IBD. Disease scores contain a mixture of PRO and physician's observations and have shown serious limitations in clinical trials. Comparison between healthcare professionals (HCP) and patient (P) reports on scores' items is a first step toward disease scor...

Background: Psychosocial factors have been shown to predict a poor disease course in patients with inflammatory bowel disease (IBD), but whether this applies to job stress is currently unknown. We assessed the prevalence of job stress and its correlates in a large cohort of patients with IBD. Methods: We included all adult, professionally active...

Background and aim: Primary sclerosing cholangitis (PSC) represents the most common hepatobiliary extraintestinal manifestation of inflammatory bowel disease (IBD). We aimed to assess the prevalence of PSC in the Swiss Inflammatory Bowel Disease Cohort Study, to identify associated risk factors, and to describe the long-term evolution. Patients a...

Background The use of out-of-hospital emergency medical services by old and very old individuals is increasing. These patients frequently require complex evaluation and decision-making processes to determine a strategy of care, therapeutic choices or withdrawal of care in life-threatening situations. During out-of-hospital missions, thorough decisi...

Background: Low bone mineral density (BMD) remains a frequent problem in patients with inflammatory bowel diseases (IBD). There is no general agreement regarding osteoporosis screening in IBD patients. Methods: Cases of low BMD and disease characteristics were retrieved from 3172 patients of the Swiss IBD cohort study. Multivariate logistic regr...

Background: Pain is a common symptom related to inflammatory bowel disease (IBD). In addition to abdominal pain, pain can also be an extraintestinal manifestation of IBD. Pain treatment is challenging and a substantial part of IBD patients are treated with opioids. Therefore, a better knowledge on pain symptoms is crucial for a better therapeutic...

French SIBDCS Pain Questionnaire. Pain questionnaire sent to the patients of the Swiss IBD Cohort Study (SIBDCS) in French. (DOCX)

German SIBDCS Pain Questionnaire. Pain questionnaire sent to the patients of the Swiss IBD Cohort Study (SIBDCS) in German. (DOCX)

Background: Perceptions of appropriateness of treatments may differ between gastroenterologists (GIs) and inflammatory bowel disease (IBD) patients. The aim of this study was to explore and compare GIs' and patients' perceptions of risks and benefits of treatments and prioritization of expected outcomes. Methods: Four vignette cases were drawn f...

Background & aims: We examined the relationship between symptoms of depression and anxiety and clinical recurrence of inflammatory bowel disease (IBD) in a large patient cohort. We considered the progression of depression and anxiety over time. Methods: We collected clinical and treatment data on 2007 adult participants of the Swiss IBD study (5...

Background and aims: Inflammatory bowel diseases (IBD) may impair quality of life (QoL) in pediatric patients. We aimed to evaluate in a nationwide cohort if patients experience QoL in a different way when compared to their parents. Methods: Socio-demographic and psychosocial characteristics were prospectively acquired from pediatric patients an...

Inflammatory bowel diseases (IBD) are systemic conditions that commonly display extraintestinal manifestations. Inflammatory articular disease (IAD: axial or peripheral) is the most common extraintestinal manifestation. The aim of this study was to evaluate the prevalence and the clinical characteristics associated with IAD in patients with IBD. We...

Background The impact of early treatment with immunomodulators (IM) and/or TNF antagonists on bowel damage in Crohn's disease (CD) patients is unknown.AimTo assess whether ‘early treatment’ with IM and/or TNF antagonists, defined as treatment within a 2-year period from the date of CD diagnosis, was associated with development of lesser number of d...

Smoking is a crucial environmental factor in inflammatory bowel disease (IBD). However, knowledge on patient characteristics associated with smoking, time trends of smoking rates, gender differences and supportive measures to cease smoking provided by physicians is scarce. We aimed to address these questions in Swiss IBD patients. Prospectively obt...

A major threat to the validity of longitudinal cohort studies is non-response to follow-up, which can lead to erroneous conclusions. The objective of this study was to evaluate the profile of non-responders to self-reported questionnaires in the Swiss inflammatory bowel disease (IBD) Cohort. We used data from adult patients enrolled between Novembe...

Question: In the ageing European population, the proportion of interventions by the emergency medical services (EMS) for elderly patients is increasing, but little is known about the recent trend of EMS interventions in nursing homes. The aim of this analysis was to describe the evolution of the incidence of requests for prehospital EMS interventi...

BACKGROUND: In this study, we aimed at assessing Inflammatory Bowel Disease patients' needs and current nursing practice to investigate to what extent consensus statements (European Crohn's and Colitis Organization) on the nursing roles in caring for patients with IBD concur with local practice. METHODS: We used a mixed-method convergent design to...

Background: Inflammatory Bowel Disease (IBD) patients are confronted with needs and concerns related to their disease. Aim: To explore information expectations of patients included in a national bilingual IBD cohort in Switzerland (SIBDC). Methods: This is a mixed-methods study, comprising 1) a semi-narrative survey sent to 1506 patients from...

Appropriateness criteria for the treatment of Crohn's disease (CD) and ulcerative colitis (UC) have been developed by experts' panels. Little is known about the acceptance of such recommendations by care providers. The aim was to explore how treatment decisions of practicing gastroenterologists differ from experts using a vignette case study and a...

BACKGROUND: It is unknown why patients with extensive ulcerative colitis (UC) have a higher risk of colorectal cancer compared with patients with left-sided UC. This study characterizes the inflammatory processes in left-sided UC, pancolitis, and UC-associated dysplasia at the transcriptional level to identify potential biomarkers and transcripts o...

Background The number of requests to pre-hospital emergency medical services (PEMS) has increased in Europe over the last 20 years, but epidemiology of PEMS interventions has little be investigated. The aim of this analysis was to describe time trends of PEMS activity in a region of western Switzerland. Methods Use of data routinely and prospectiv...

BACKGROUND AND AIMS: Limited data from large cohorts are available on tumor necrosis factor (TNF) antagonists (infliximab, adalimumab, certolizumab pegol) switch over time. We aimed to evaluate the prevalence of switching from one TNF antagonist to another and to identify associated risk factors. METHODS: Data from the Swiss Inflammatory Bowel Dise...

Background There is uncertain evidence of effectiveness of 5-aminosalicylates (5-ASA) to induce and maintain response and remission of active Crohn's disease (CD), and weak evidence to support their use in post-operative CD.AimTo assess the frequency and determinants of 5-ASA use in CD patients and to evaluate the physicians' perception of clinical...

Background Anti-TNFα agents are commonly used for ulcerative colitis (UC) therapy in the event of non-response to conventional strategies or as colon-salvaging therapy. The objectives were to assess the appropriateness of biological therapies for UC patients and to study treatment discontinuation over time, according to appropriateness of treatment...

Background Inflammatory bowel disease (IBD) starting during childhood has been assumed to impair quality of life (QoL) of affected children. As this aspect is crucial for further personality development, the health-related quality of life (HRQOL) was assessed in a Swiss nationwide cohort to obtain detailed information on the fields of impairment....

Purpose Spine surgery rates are increasing worldwide. Treatment failures are often attributed to poor patient selection and inappropriate treatment, but for many spinal disorders there is little consensus on the precise indications for surgery. With an aging population, more patients with lumbar degenerative spondylolisthesis (LDS) will present fo...

BACKGROUND: Despite the chronic and relapsing nature of inflammatory bowel diseases (IBD), at least 30% to 45% of the patients are noncompliant to treatment. IBD patients often seek information about their disease. AIM: To examine the association between information-seeking activity and treatment compliance among IBD patients. To compare informatio...