Active clinical trials for "Constriction, Pathologic"

This is a prospective, multicenter, randomized controlled clinical investigation aiming to evaluate the safety and effectiveness of non-slip balloon catheter for the treatment of patients with coronary artery stenosis.

The EMPIRE study confirms the technical performance of the new IMPERIA Delivery System and evaluates the safety and efficacy of the entire ALLEGRA THV System. The primary endpoint is device success rate at 7 days (discharge from index procedure or 7 days post implant, whichever comes first), as defined by VARC 2. Based on the outcomes of a study with a similar device and considering a drop-out rate of 5%, 107 patients need to be enrolled in the study.

To evaluate the safety and efficacy of the ProTractX3™ DCB for the treatment of benign esophageal strictures.

Moderate (50-69%) asymptomatic carotid artery stenosis (ACAS) is an important and under-appreciated contributor to balance and mobility dysfunction. This is significant because declines in balance and mobility are a significant predictor of falls, disability, loss of independence, and death in older adults. Further, falls and fall-related injuries in older adults cost approximately 50 billion dollars annually in the United States, and are the leading cause of adverse events reported by the Veterans Health Administration. This proposal seeks to: 1) investigate the impact of a supervised aerobic and challenging balance exercise program on balance and mobility function in patients with moderate ACAS; and 2) elucidate whether these changes are related to changes in cerebral perfusion. With 830,000 Veterans estimated to have moderate ACAS and at risk for balance and mobility dysfunction and increased falls, the findings from this study could have significant impacts on the clinical management, quality of life, and functional independence of Veterans with moderate ACAS.

To conduct a prospective, multi-center study to observe the long-term efficacy and safety of self expanding ureteral stent for treating participants with refractory ureteral stricture.

Spinal stenosis is the most common cause of degenerative spinal surgery. The majority do not achieve the global recommendations for health-promoting physical activity before or after surgery. Patients with a low level of physical activity and a high degree of fear of movement are at an increased risk of poorer health outcomes after surgery. Increasing the number of steps per day is a way to increase physical activity, which in long term can lead to health benefits. In addition, a digital format is a way to increase the availability of physiotherapy to strive for equal rehabilitation. The overall purpose of the research project is to improve health outcome and increase the availability of rehabilitation for patients at high risk of negative health outcomes after spinal surgery due to spinal stenosis through Get Back, a person-centered and digital program with a focus on physical activity. Before conducting a large-scale study, the investigators want to conduct a study that aims to investigate and develop the Get Back program regarding content and dose, treatment fidelity as well as feasibility in terms of study procedure, compliance, and acceptability. Approximately thirty patients with lumbar spinal stenosis and an identified risk profile for poorer postoperative outcomes will be recruited from two spine clinics in Sweden. The program involves meeting a physiotherapist digitally (through video call) approximately 1 week before surgery to formulate a person-centered health plan. The health plan is monitored and progressed by the physiotherapist by video until eleven weeks after surgery. The Get Back program includes 5 sessions (1 hour each) which are supplemented with 5 booster sessions (30 minutes) to reinforce the intervention. Get Back is based on three key components that run through all sessions. These are person-centeredness, behavioral medicine techniques to reduce fear of movement and worries about pain, as well as to optimize physical activity. The physiotherapist supports the participant's individual resources and abilities through validated behavioral medicine methods in combination with education/communication/knowledge support and behavior-strengthening tools (which are also used in-between sessions) to achieve the participant's personal goals linked to physical functioning, physical activity, and health. The program will be compared to standard physiotherapy.

Biliary stricture is a common complication after end-to-end biliary anastomosis, especially after liver transplantation. This study is designed to investigate the safety and efficacy of magnetic recanalization technique, a newly clinical method, for treating biliary anastomotic stricture.

The Colibri Heart Valve clinical investigation ("COL-01") is a prospective, multicenter, exploratory single arm and controlled clinical investigation compared to recent historical results. This study will be conducted in about 7 European sites. The study will evaluate the safety and performance of the Colibri Transcatheter Aortic Heart Valve System for the treatment of symptomatic severe aortic stenosis via transfemoral access in high surgical risk patients. 30 subjects suffering from symptomatic severe aortic tricuspid valve stenosis and who are at high surgical risk (logistic EuroSCORE I > 20% or other risk factors not included in this score such as frailty, porcelain aorta, sequelae of chest radiation or logistic EuroSCORE I < 20% but considered at high risk by local Heart Team evaluation) will be enrolled in this clinical investigation. The primary objective of this clinical investigation is to evaluate the all-cause mortality at 30 days post implantation. The secondary objectives are to evaluate the safety and performance of the investigational device at 30 days, 6 and 12 months, and 2, 3, 4, 5 years post implantation.

The literature has shown evidence of the effectiveness of prehabilitation programs on post-operative recovery for musculoskeletal conditions; however, evidence for prehabilitation for lumbar spinal stenosis (LSS) is limited. Investigators have found that there is very low to low quality evidence for the effect of prehabilitation interventions for improving outcomes following lumbar spine surgery. Therefore, the purpose of this study will be to determine the feasibility of a prehabilitation program for patients undergoing LSS surgery, and pilot test the protocol to provide the foundation for future design of a larger, multicenter randomized controlled trial.

Aortic stenosis (AS) is the most common valvular heart disease in the developed world. Once symptomatic, untreated patients have a poor prognosis with five-year survival rate of 25%. Once at an advanced stage, AS will lead to the development of left ventricle hypertrophy, and eventually heart failure and death. At-present, there is no effective medical therapy for aortic stenosis. Current management of patients with AS consists of 'watchful waiting'. Valve replacement is needed when these patients (often acutely) become symptomatic. Recent studies have shown that inflammatory processes with similarities to atherosclerosis play an important role in AS. Therefore, we hypothesize that treatment with anti-inflammatory therapy, in the form of colchicine, could reduce the progression of AS. If positive, this trial will be the first to provide a potential therapeutic option for millions of people world-wide with AS.