Active clinical trials for "Ulcer"

Ulcerative colitis (UC) is a chronic inflammatory condition of unknown aetiology, characterized by a diffuse confluent mucosal inflammation of the colon starting from the rectum with a relapsing and remitting course. Conventional endoscopy was thought to be a reliable parameter of disease activity, but microscopic inflammation can persist despite normal mucosal findings. Histologically detectable inflammation is associated with a greater risk of subsequent relapse. A flare in UC activity is difficult to predict, but a simple, easily measured biological marker of relapse would be important in guiding the most appropriate therapy. Recent technological advances in fiber optics, light sources, detectors, and molecular biology have stimulated development of numerous optical methods that promise to significantly improve our ability to evaluate human epithelium in vivo. These methods, collectively termed "optical biopsy," are nondestructive in situ assays of mucosal histopathology using light that can provide instantaneous tissue assessment. Narrow band imaging (NBI) is a novel technique that enhances the diagnostic capability of endoscopes in characterising tissues by using filters in a redgreenblue (RGB) sequential illumination system. This results in improved mucosal contrast and detail. UC always involves the distal colon and activity is usually greatest in rectosigmoid area. This makes evaluation of the rectum and sigmoid an attractive marker in patients with UC. Unlike serum and faecal markers, endoscopic assessment of the mucosa is unlikely to be affected by systemic disease and would be acceptable test for patients and physicians. We plan to evaluate THE rectosigmoid mucosa in patients with UC by flexible endoscope using both white light and NBI endoscopy. These patients will be followed by for one year or until they relapse, whichever comes first. The aim of our study is to develop endoscopic biomarkers to predict relapse in acute and quiescent UC.

The objectives of this study are to investigate how oral 5-ASA drugs have been used in the condition without symptoms such as abdominal pain or diarrhea/bloody stool (remission stage), or in the transition from the condition with symptoms such as abdominal pain or diarrhea/bloody stool (active stage) to the remission stage in ulcerative colitis and to study how many patients will be able to maintain the remission stage during the observation period and how many times the patients will experience the active stage (relapse), as well as how symptoms will change during the observation period to discover better treatment plans.

The investigators aim to recruit 311 participants to this study from three UK Dermatology departments. The investigators will invite people with suspected skin cancers whose lesions have a broken surface (also known as ulcerated) who will undergo surgery. This study is being carried out because it is possible that patients with skin cancers with ulceration might be at greater risk of developing a wound infection after surgery. The aim of this study is to determine how many people with ulcerated skin cancers develop an infection of the wound after it has been surgically removed. People with ulcerated skin cancers who will have surgery will be invited to participate in the study. If they agree, a member of the research team will explain the study and consent them to participate in the study. At the time of surgery, information will be collected about the participant, skin tumour and procedure. The participant will be given standardised advice regarding wound care and further care will be as per each centre's 'normal clinical care'. If participants are diagnosed with a wound infection then they will asked to take a 'wound selfie' and share the photo with the research team. The research team will contact the participant via a postal questionnaire which will be sent four weeks after the procedure to determine whether they had any concerns about post-operative infection and whether any action was taken. Additionally, all participants at the University Hospital of Wales will have a surface swab taken from their ulcerated skin cancer and these will be analysed in the Public Health Wales laboratory at the University of Wales, Cardiff. The aim of this aspect of the study is to identify the most common bacteria in ulcerated tumours.

The primary objective is to obtain stool samples from pre-therapy subjects already undergoing evaluation for an H. pylori infection by upper esophagogastroduodenoscopy (EGD) and gastric biopsy.

A recent multicentre randomised controlled trial compared autofluorescence imaging (AFI) with CE for dysplasia detection in colonoscopy surveillance of patients with longstanding UC (FIND-UC). In this study, CE detected significantly more dysplastic lesions per patient compared with AFI. It is unclear whether this increased dysplasia detection also translates to a reduction of dysplasia at follow-up colonoscopy. The aim of this pre-specified study is therefore to prospectively determine whether there is a difference in dysplasia detection at follow-up colonoscopy between UC patients who were randomized to AFI or CE at index colonoscopy for the FIND-UC trial.

The prevalence of and risk factors for pressure ulcers (PUs) in critically ill patients have been poorly studied. The main objective of this study was to describe the prevalence of PUs in critically ill patients. Secondary objectives were to describe PUs, means of prevention of PUs, and factors associated with occurrence of PUs in the ICU.

The purpose of the study is to determine whether a new colonoscopic viewing technique called Linked color imaging(LCI) helps endoscopists detect more dysplasia lesions in ulcerative colitis patients than conventional colonoscopy using white light alone.

The main aim of this study is to check the disease activity in people with moderate to severe ulcerative colitis and Crohn's disease. Participants will complete questionnaires about their disease and quality of life on Day 1 clinic visit. They will do this during a standard scheduled appointment with their doctor. Some of this study will also involve collecting information about participants from their medical records.

The aim of the non-interventional study is to document the daily doses in acute and remission therapy, the frequence of doses (1, 2, 3 or 4 times daily), when rectal dosage forms are added and, when and how long steroids are given.

The aim of the study is to do a 7-year follow-up of a consecutive inception cohort of 562 adults and children diagnosed and registered with inflammatory bowel disease in 2003-04 in order to evaluate the consequences of biological therapy in the treatment of IBD. The cohort is established after the implementation of biological agents in the treatment of IBD and the investigators hypothesis is that a) Severe disease course in IBD can be predicted by phenotypic presentation by serological, genetic, clinical and endoscopic characteristics to be used as guidance in the selection of treatment strategy and b) Introduction of biological treatment changes the course of disease in IBD and reduces the need of surgical procedures. Methods: Medical records will be reviewed to register the use of medication, flare ups (medical and surgical) and hospital admissions. Diagnosis, disease localization and behavior will be evaluated. At outpatient visits patients will get a clinical examination, blood and faeces will be collected to biobank and patients will be offered an endoscopical examination. The Montreal classification, The Harvey & Bradshaw's activity index (CD) and the SCAAI score (UC) will be used to describe disease localization, extent, behavior and severity. An electronic database will be established in use of processing data.