View clinical trials related to Constriction, Pathologic.
Filter by:The purpose of this study is to assess the interobserver agreement (IOV) for pancreatico-biliary Volumetric Laser Endomicroscopy (VLE) de-identified clips using the new VLE criteria. This is an Interobserver study to validate VLE criteria for indeterminate biliary and pancreatic duct strictures and evaluate impact on clinical management.
This study investigates safety and efficacy of surgical treatment of patients with anterior urethral stricture using a tissue-engineered construct based on autologous buccal mucosa cells and matrix from reconstituted collagen and reinforcing polylactoglycolide fibers. This is a single arm study with no control. Success will be assessed via objective and subjective methods; complications will be tallied in a standardized fashion. Outcomes will be measured at five years.
Regional absolute myocardial blood flow during stress (sMBF) as measured by Positron Emission Tomography (PET) improves post mechanical revascularization provided there is a baseline stress induced perfusion defect. Coronary revascularization performed on regions without a stress induced perfusion defect does not increase the sMBF.
The purpose of the proposed research is to explore the relationship between objectively measured physical activity and surgical intervention for lumbar spinal stenosis (LSS). Our primary hypothesis is that post-surgery, LSS patients will demonstrate increased physical activity compared to their baseline assessment. A non-intervention control group will be measured at the same time intervals as the surgical group to look at test re-test reliability. In the event that our hypothesis is rejected, and surgery does not lead to a decrease in sedentary behaviour analysis of questionnaire-based sedentary behaviour measures and objective activity-based measurement can examine the relationship between self-report and actual performance-based objective measures. The primary objective of our proposal is to determine if surgical intervention leads to increased activity, and decreased sedentary behaviour. The findings of the proposed research will inform healthcare stakeholders that if surgery alone does not lead to increased activity, a more concerted research effort may need to be made for post-surgical rehabilitation, lifestyle and physical activity counselling so that post-surgical patients may make changes toward leading more active and productive lives.
The objectives of the proposed research are to quantify the impact on motor performance of a single SM intervention on surgical waitlist patients with degenerative Lumbar Spinal Stenosis (LSS) using a recently established lower extremity movement task: 1) using alterable levels of task difficulty that is resistant to learning and 2) using measurement of movement kinematics.
Autologous adipose-derived regenerative cells (ADRC) extracted using Celution 800/CRS System (Cytori Therapeutics Inc)from a portion of the fat harvested from the patient's front abdominal wall. ADRC will be administered one-time endoscopically into submucosal layer of urethra under eye control into the stricture site after mechanical dilation. This is a single arm study with no control. All patients receive cell therapy.
Overall Objective: To evaluate the efficacy of an interventional walking program on the quality of life and functional status of patients with Lumbar Spinal Stenosis, post-surgery, using subjective (VAS, ODI, RMDQ, SF-36), and objective measures (triaxial accelerometry, step count, weight). Design and Methods: Two groups of subjects will be examined; patients diagnosed with lumbar spinal stenosis (LSS) that progress to surgical management, with one group of subjects staring on the walking program at 2 months postop, and the other group starting on the walking program at 3 months postop. Subjects who agree to participate will be assessed (assessments listed below) after the diagnosis preoperatively and 2 months postoperatively. One half of the group will start the walking program at the 2 months postop visit and be assessed again at the end of the walking program, the other half will be assessed again at 3 months postop and start the walking program at that time and be assessed again at 4 months postop. All subjects will be contacted by phone during their walking program to allow for questions from the subjects and to offer support and encouragement. Subjects will be given instructions and a daily diary to track steps taken each day (appendix A). Subjects will be recruited from the referrals to the practices of the Orthopedic and Neurosurgery Spine Surgeons at the Health Sciences Centre in Winnipeg. This encompasses the majority of new and currently managed cases in the Manitoba and Northwestern Ontario. Subjects will be between the ages of 18 and 90. Male and female subjects will be recruited into the study. All LSS patients will demonstrate intractable neurogenic claudication and radiographically confirmed lumbar spinal stenosis. Exclusion criteria will be any previous lumbar spine surgery, the existence of significant co-morbidity (e.g. neurologic or cardiac condition, disease, etc.) of any form, and any other physical limitations (musculoskeletal injury) preventing the subject from participating in regular activity and the walking program. Subjects participating will be required to speak English.