Active clinical trials for "Ulcer"

The purpose of this study is to compare the number of and degree of pressure ulcers healed, as measured by intact skin at the original ulcer site at 6 months of follow-up in patients randomized to immediate operative closure versus those who are maintained in a wound care program in patients with Stage 3 and 4 sacral and peri-sacral decubitus ulcers.

ThoraflexTM is designed for the treatment of aneurysm or penetrating ulcer of the descending thoracic aorta. Each system is advanced from a transfemoral or transiliac approach over a 0.035" guidewire and positioned under fluoroscopic control. If necessary, an arterial conduit technique may be required to allow access to the arterial system. The soft tapered tip allows atraumatic insertion into the vessel, while the catheter and sheath are designed to provide excellent flexibility and control through tortuous arterial anatomy. Each individual stent graft device is supplied sterile and pre-loaded in a single-use delivery system. The stent graft is a self-expanding endoprosthesis constructed of a thin wall woven polyester and nitinol ring stents, which are attached to the fabric with braided polyester sutures. The delivery system central catheter is a stainless steel braided co-extrusion of polytetrafluoroethylene (PTFE) and polyester elastomer, designed to provide significant torque control and strength, while also maintaining superior flexibility. The outer sheath is made in a tri-layer construction consisting of a PTFE liner, a stainless steel flat braid layer and a polyester elastomer outer jacket with a hydrophilic lubricant coating. These materials provide very low friction force during device insertion and deployment together with enhanced flexibility of the delivery system. The handle components are moulded from thermoplastic polyurethane. The materials of the endoprosthesis are identical to those of the current Conformité Européenne (CE) marked Vascutek Ltd. AnacondaTM Stent Graft System intended for abdominal aortic aneurysm repair. The materials of the delivery system are well established in medical applications. The design of ThoraflexTM is based on the same principles as other clinically established thoracic endovascular devices. The endoprosthesis is constructed of self-expanding nitinol stents and a polyester tube graft. Four proximal hooks anchor the endoprosthesis within the aorta. Unlike existing thoracic endovascular devices, the delivery system of ThoraflexTM allows repositioning of the endoprosthesis so that the optimal deployment position can be enhanced. The intended use of ThoraflexTM is the treatment of aneurysm or penetrating ulcer of the descending thoracic aorta, which is identical to other CE approved thoracic endovascular devices.

This clinical trial tries to use tissue fibrin glues (Tisseel) to treat various ocular surface diseases or surgeries, which includes pterygium surgery, corneal melting/perforation, Gunderson's flap, conjunctival laceration, and muscle/clinical/filtering surgery.

The study examines the effect of a low FODMAP diet in patients with UC in remission but still having GI symptoms (IBS in IBD). 15 patients will be on watchful waiting. 15 patients will be on low FODMAP diet. 15 patients with recieve FODMAPs in their diet.

The aim of this study is to compare the clinical efficacy of two types of NPWT systems; the traditional negative pressure wound therapy (tNPWT) system and the single-use negative pressure wound therapy (PICO) system.

This study will gather preliminary clinical, health economic, and safety data on the treatment of chronic wounds with the ALLEVYN Life Non-Bordered dressing compared to standard of care treatment when used on a wound.

The purpose of this study to assess the pharmacokinetic profile in patients with active ulcerative colitis and compare it to the experience in healthy volunteers.

The primary purpose of this study is to determine the effectiveness of a low-fat or standard American diet (high in fat) in helping people with ulcerative colitis improve their symptoms and the signs of inflammation in blood tests and in bowel biopsies.

The purpose of this study, is to determine whether daily supplements of vitamin D improves wound healing in diabetic patients with chronic foot ulcers.

A)Background: Approximately 44% of patients with Inflammatory bowel disease have Ulcerative colitis(UC) which is a lifelong, chronic disease, starting in early adulthood, where the colon becomes inflamed and ulcerated due to a complex interaction between genetics, altered immune function, and environmental factors2such as dietary intake. While the etiology of UC is not clear, it is hypothesized the abnormal immune response and chronic inflammation may be caused by dysbiosis of the intestinal microbiota and decreased epithelial barrier function. Substantial evidence suggests that higher than normal levels of hydrogen sulfide (H2S) in the colon plays a role in the etiology of UC. The higher levels of H2S and sulfate-reducing bacteria (SRB) found in the feces of patients with UC is likely caused by the reduced conversion of H2S to thiosulfate by rhodanese (thiosulfate transferase enzyme)12, and increased colonization or activity of SRB. For example, SRB has been identified as the predominant bacterial group in patients with UC compared to the minority group in healthy individuals, and SRB growth is stimulated by the presence of sulfur-rich amino acids. Dietary intervention may help to repair the dysbiosis existing in the microbiome of the patient with UC, but research about food and recurrence of UC is conflicting. Dietary components such as sulfur and sulfates also appear to play a role in the recurrence of UC; although a recent review of the relationship between sulfur-containing foods and UC calls for more randomized controlled trials (RCTs) examining a reduced sulfur diet in UC. With the body of evidence described above, there is a compelling reason to consider that sulfur and sulfate-containing foods contribute to developing severe UC. Thus, understanding how dietary modulation of sulfur intake within the context of UC impacts disease status is the focus of this proposal.