View clinical trials related to Constriction, Pathologic.
Filter by:The NORDSTEN- OS(Observational study) aim to study the natural course in patients with mild to moderate symptomatic lumbar spinal stenosis with and without degenerative spondylolisthesis. 10 years follow-up is planned. The NORDSTEN-OS is one of three studies in The NORwegian Degenerative Spondylolisthesis and Spinal STENosis studies. The two other studies are: NORDSTEN-SST (Spinal stenosis trial) (NCT02007083); a randomized controlled trial comparing the clinical and radiological results in three different decompression techniques in patients with lumbar spinal stenosis. The NORDSTEN-DS (Degenerative spondylolisthesis) (NCT02051374); a randomized controlled trial comparing the outcome of surgery with decompression without fixation and decompression with fixation in patients with lumbar spinal stenosis and concurrent degenerative spondylolisthesis.
Introduction: Lumbar spinal stenosis is a common cause of low back and leg pain in elderly impacting physical activity and quality of life. Initial treatments are non-surgical options. If unsuccessful, surgery is advocated. The literature is not clear as to the outcome of surgery when compared to non-surgical treatment, and the optimal time for surgery is not explicit. Materials and analysis: This observational study is designed to investigate the course of treatment, compare effectiveness of surgical and non-surgical treatment in patients with lumbar spinal stenosis, and identify prognostic factors for outcome in the context of current clinical practice. Prospectively registered data on treatment, outcome and patient characteristics are collected from nationwide registers on health and social issues, a clinical registry of people with chronic back pain and hospital medical records. Primary outcome is change in physical function measured by the Zurich Claudication Questionnaire. Secondary outcomes are changes in symptom severity, pain-related function, health-related quality of life, and general self-efficacy. All outcomes are measured at baseline, 6 months and 12 months follow up. Comparisons on these variables will be made between those who undergo surgery for lumbar spinal stenosis and those not receiving surgery at 12 months follow up according to different analysis populations. Prognostic factors include treatment allocation, back and leg pain intensity, comorbidity, duration of symptoms, pre-treatment function, self-rated health, income, general self-efficacy and magnetic resonance imaging graded compression of central stenosis. Ethics and dissemination: The study has been evaluated by The Regional Committees on Health Research for Southern Denmark (S-20172000-200) and notified to the Danish Data Protection Agency (17/30636). All participants provide consent. Findings will be disseminated in peer-reviewed publications and presented at national and international conferences following the guidance from the STROBE and PROGRESS statement. Potential sources of bias will be addressed using ROBINS-I.
Management of pharyngoesophageal stenosis (PES) in patients after head and neck cancer (HNC) treatment remains a challenge. There are some cases of strictures refractory to dilation sessions. This study aimed to evaluate the efficacy of Mitomycin C (MMC) endoscopic injection for the treatment of refractory pharyngoesophageal stenosis. Patients and methods: This is a prospective study in patients with dysphagia following head and neck cancer treatment, without evidence suggestive of tumor recurrence, and refractory to endoscopic treatment. Theses undergo endoscopic dilation of the stenotic segment with thermoplastic bougies, followed by the injection of MMC.
The purpose of this study is to determine which type of lumbar stabilization exercise is more effective to improve functionality and reduce pain in patients operated with lumbar arthrodesis, to guide clinical practice in the rehabilitation of these patients.
1. Evaluate the feasibility for the on-table evaluation of the renal perfusion by using Syngo Dyna Parenchymal Blood Volume(PBV) Body; 2. Explore the clinical benefits of this application during procedure to help the physician to determine the procedure endpoint.
Biliary drainage is the mainstay of the palliative treatment in patients with inoperable malignant bile duct stricture. Endoscopic retrograde cholangiopancreatography (ERCP) is the cornerstone of biliary drainage method in these patients. However, ERCP is sometime unsuccessful to perform because of the presence of the high grade biliary stricture, tumor invasion of duodenum and ampulla of vater and surgically altered gastrointestinal anatomy. Endoscopic ultrasound (EUS) guided biliary drainage has been emerged as an alternative procedure to traditional surgical bypass and percutaneous trans hepatic biliary drainage after failed ERCP. There were few data to directly compare between ERCP and EUS guided biliary drainage and in patients with malignant high grade biliary stricture.
This study will monitor the safety and valve performance of the Edwards CENTERA Transcatheter Heart Valve (THV) System in patients with symptomatic, severe, calcific aortic stenosis who are at intermediate operative risk for surgical aortic valve replacement (SAVR).
The purpose of this research is to find out if there are inflammatory biomarkers (also known as biological markers) in epidural space that can predict response to an epidural steroid injection. This study will also be evaluating whether the results of an EMG study (also known as electromyography) can predict the response to an epidural steroid injection.
Posterior circulation stroke accounts for 20% of ischemic stroke. A quarter occurs in patients with stenosis in the vertebral and/or basilar arteries. Vertebral artery stenosis can be treated with stenting. However, in-stent restenosis rate have been reported as high as more than 30%, which may reduce the effect of stent therapy. Drug-coated balloon has shown good results in controlling neointimal hyperplasia in the femoral and popliteal arteries.
Approximately 2000 patients eligible for elective treatment with a Carotid Stent according to hospital routine practice in centers across Europe will be enrolled in the study. The maximum number of patients enrolled at each site will be not limited. Follow-ups are scheduled at discharge, 30 days, and 1 year, as per local practice. Each patient will have follow-up contacts via hospital visit and/or telephone.