View clinical trials related to Constriction, Pathologic.
Filter by:Stroke due to intracranial arterial atherosclerosis is a significant medical problem, carrying one of the highest rates of recurrent stroke despite best medical therapy, with annual recurrence rates as elevated as 25% in high risk groups. The goal of this investigation is to advance a promising surgical treatment for symptomatic atherosclerotic intracranial stenosis - encephaloduroarteriosynangiosis (EDAS). The investigation will test in a phase II futility trial the potential of EDAS for further development before proceeding with the design of a definitive clinical trial of EDAS Revascularization in patients with Symptomatic Intracranial Arterial Stenosis (ERSIAS). The investigation is a 4-year futility trial to test the hypothesis that EDAS revascularization combined with aggressive medical therapy warrants further evaluation in a subsequent pivotal trial as an alternative to aggressive medical management alone for preventing the primary endpoint of stroke or death in patients with symptomatic intracranial arterial stenosis (Specific Aim 1). During the investigation the time course of collateralogenesis and perfusion improvement following EDAS will also be evaluated (Specific Aim 2.
To demonstrate the safety and efficacy of MD02-LDCB for treatment of stenosis or occlusion of the femoral and popliteal arteries in the Japanese population.
This study will test two different methods for processing biopsy specimens taken from the bile duct. Patient;s who are asked to participate int his study have a stricture in the bile duct that needs a single operator cholangioscopy-guided biopsies during endoscopic retrograde cholangiopancreatography (ERCP) so that a diagnosis can be made. Standard of care includes performing single operator cholangioscopy-guided biopsies in the bile duct and sending the tissue to the lab for testing to make a diagnosis. Using this method the investigators can establish a diagnosis only about 50% of the time. The investigators believe that if a cytopathologist is available in the endoscopy suite during the procedure to evaluate the biopsy specimens onsite, the investigators can improve the diagnostic accuracy. The purpose of this study is to compare two methods for processing biopsies obtained from the bile duct (Onsite vs. Offsite).
To collect efficacy and outcomes data related to the use of trūFreeze® spray cryotherapy for the treatment of unwanted tissue in the pulmonary and gastrointestinal settings.
The goal of the flow-mediated constriction/ FMC-registry is to investigate whether the measurement of endothelial function using flow-mediated dilation and flow-mediated constriction provides on the presence of coronary atherosclerosis and on the prognosis of patients undergoing coronary angiography.
Investigational study of Edwards Lifesciences, LLC's "Edwards SAPIEN Transcatheter Heart Valve" for non-femoral delivery, (or alternative access deliver) in patients with severe symptomatic native aortic valve stenosis who have been determined by a cardiac surgeon to be inoperable for open aortic valve replacement and in whom existing co-morbidities would not preclude the expected benefit from correction of the aortic stenosis. Will outcomes observed in a high-risk operable transapical native valve TAVR cohort receiving an Edwards SAPIEN device compare to inoperable patients undergoing alternative access TAVR with the Edwards SAPIEN device experience a reasonably similar incidence of 30 day adverse events?
Aortic stenosis is the most common adult valvular heart disease in the western world. Heart failure and sudden cardiac death are complications associated with aortic stenosis. In symptomatic individuals, valve replacement is often the only effective treatment. However, there are no good markers to identify patients who may benefit from early surgery before symptoms developed. The purpose of the study is to test the hypothesis that the presence heart muscle scarring on the cardiac magnetic resonance imaging may predict a worse outcome in patients with aortic stenosis, and thus may be helpful in identifying patients for early valve replacement.
The idea behind the Teledi@log consortium is to develop tele-rehabilitation concepts and technologies so that all types of heart disease patients, regardless of degree of severity, can be offered individual, customized and coordinated tele-rehabilitation across sectors. The project is innovative, breaking new ground in relation to existing national and international research projects in the area. The Teledi@log consortium sees its major task as developing and testing scenarios which can lead to a more coherent rehabilitation for heart patients in areas such as patient training, organization across the boundaries of the health system and using tele-rehabilitation technology. The Teledi@log consortium seeks to develop new tele-rehabilitation concepts which bring the patient closer to the health system and thereby promote the heart patient's rehabilitation, giving the patient and their families a more active role via new tele-rehabilitation technologies.The hypothesis of the study is that heart patients participating in a telerehabilitation program will have a higher quality of life compared to heart patients following traditional rehabilitation activities.
The ABSORB III RCT is a prospective randomized, single-blind, multi-center trial. It is the pivotal trial to support the US pre-market approval (PMA) of Absorb™ Bioresorbable Vascular Scaffold (BVS). The ABSORB III includes additional two trials i.e. ABSORB III PK (pharmacokinetics) sub-study and ABSORB IV RCT trial which are maintained under one protocol because both trial designs are related, ABSORB IV is the continuation of ABSORB III and the data from ABSORB III and ABSORB IV will be pooled to support the ABSORB IV primary endpoint. Both the trials will evaluate the safety and effectiveness of Absorb BVS.
For fetuses with severe aortic stenosis, in utero balloon aortic valvuloplasty may improve fetal growth of left heart structures and thus improve potential for biventricular repair strategies after birth.