View clinical trials related to Constriction, Pathologic.
Filter by:Ambulation following surgery has been found to be beneficial for patients; however, nurses and doctors struggle with getting post-operative, hospitalized patients to walk on their own. One promising strategy to address this might be an ambulation orderly, an employee whose single responsibility is to assure that patients walk 3-4 times per day. However, the effect of the ambulation orderly on post-operative physical activity has not yet been described. It is important to quantify what the ambulation orderly does in order to assess if this is an effective method for helping patients walk. As a result, the investigators will perform a pilot randomized controlled trial to test the effects of an ambulation orderly in patients hospitalized with recent cardiac surgery. Half of the patients will be assigned to walk with the ambulation orderly 3-4 times/day and the control group will be given standard nursing encouragement and assistance and encouragement to walk. The investigators will evaluate the average total daily step counts (over the hospital course, usually 4-7 days) and the change in walking distance between a baseline and a final 6 minute walk test. The investigators will also evaluate exercise physiologic parameters (heart rate, oxygen saturation) during ambulation, patient functional independence, and patient satisfaction.
The primary objective of this study is to document all cases of EUS in patients with esophageal cancer and determine if the inability to advance the gastroscope beyond the tumor correlates with locally advanced disease stage at Endoscopic Ultrasound.
This study is designed to compare the safety and efficacy of paclitaxel-eluting balloon (DEB) versus conventional percutaneous transluminal angioplasty (PTA) for the treatment of hemodynamically significant recurrent cephalic arch stenosis in brachial cephalic fistulas in hemodialysis patients.
Biliary obstruction complicates the course of chronic pancreatitis in 3%-23% of patients and in these cases, endoscopy and surgery are the treatment modalities of choice. Morbid-mortality of these procedures is similar and physicians face the decision between endoscopy and surgery for this group of patients, with no randomized controlled trial available comparing these procedures. The PASTEC trial is a multicenter, phase III, randomized, comparing the effectiveness of surgical and endoscopic interventions in the management of bile duct stricture for chronic pancreatitis. The primary end point is 18-months normalization of serum alkaline phosphatase. Secondary end points are morbid-mortality rate, quality of life, numbers of endoscopic or surgical procedures, length of stay. Eighty-six patients need to be included.
This is a research study to assess whether an oral medication can benefit some patients being treated for peripheral pulmonary stenosis (PPS), which is narrowing of the blood vessels that send blood to the lungs (pulmonary arteries). In the cardiac catheterization laboratory, the investigators treat PPS by dilating the narrowed segments of pulmonary arteries using balloon catheters. Sometimes the investigators also place stents which are mesh tubes that help keep the narrowed vessel open. Some stents suffer from in-growth of tissue into the stents which causes recurrent obstructions inside the stent (i.e. making the opening inside the mesh tube narrow again), so called in-stent stenosis (ISS). The purpose of this study is to use a medication that is approved for use in children (for a different purpose) to decrease the amount of cell ingrowth inside the stents (i.e. decrease the problematic in-stent stenosis). The medication is called rapamycin, also known as sirolimus (trade name Rapamune). It has antiproliferative properties which means that it slows down cell division which the investigators believe cause the recurrent narrowing inside stents. Rapamycin is a medicine that can be taken by mouth as a liquid or pill or via a feeding tube. There will still be a need for interventions in the catheterization laboratory but the investigators hope that by taking this medicine some children would need fewer catheterizations in the future. Our early experiences with a few patients who have been treated with rapamycin due to in-stent stenosis in the pulmonary arteries suggest that it may be helpful. In this study, patients and families who are interested in possibly trying this new approach will be randomized to sirolimus or no sirolimus. The investigators will compare the developement of ISS over time between these groups, in a hope to learn whether oral sirolimus reduces ISS development.
The objective of this study is to evaluate the effect of hyperbaric oxygen therapy (HBOT) on airway complications in post-lung transplant recipients with evidence of restricted levels of blood and oxygen in the airway tissue. Study subjects with extensive airway tissue damage in the early post-transplant period will be randomized to HBOT or usual care and followed clinically for 12 months following randomization. The investigators hypothesize that HBOT will decrease the number of airway complications in the treated subjects.
The purpose of this study is to investigate the use of a functional luminal imaging probe to characterize benign esophageal luminal strictures before and after dilation and identify predictors of response to therapy. Patients will be evaluated during endoscopy using functional luminal imaging (EndoFLIP; Crospon Medical Devices, Galway, Ireland) to characterize the geometry of benign luminal esophageal narrowing before and after dilation.
The purpose of this study is to assess the feasibility of a full-scale multicenter randomized, controlled trial comparing the effectiveness of two surgical treatments for a condition associated with lumbar spinal stenosis called degenerative lumbar spondylolisthesis. Both treatments are currently used, but individual surgeons use different selection criteria for each treatment and use the procedures at different rates. The two procedures are decompression with fusion (the most common surgical procedure for spondylolisthesis) and midline-sparing decompression alone (which is also a standard treatment, but is not as widely used for treating spondylolisthesis). The investigators plan to collect the evidence on the following: 1. The feasibility of the trial protocol, and 2. Preliminary data on the effectiveness of each treatment.
This observational cohort study studies the impact myocardial fibrosis has on patients with severe aortic stenosis undergoing aortic valve replacement.
Intracranial atherosclerosis is common vascular lesion in Asian acute stroke patients and intracranial atherosclerosis patients have high rate of coronary artery disease (CAD). Moreover, several studies showed obvious association of CAD and cerebrovascular stenosis, which had been proved to increase the risk of stroke after coronary revascularization including coronary bypass surgery or percutaneous coronary intervention. In addition, the efficacy and safety of combined coronary and cerebral intervention are not fully investigated. Hence, the aim of this study is to evaluate the prevalence and characteristics of coronary and cerebrovascular arteriosclerosis as measured by combined coronary and cerebral angiography, explore the relationship between inflammation, atherosclerosis-related markers and coronary and cerebral atherosclerosis and compare the efficacy and safety of simultaneous or staged coronary and cerebral interventional strategy in Chinese Patients. The coronary angiography and cerebrovascular angiography are performed for all participants. The combined strategy for coronary and cerebrovascular angiography is carried out routinely in the investigators institutions. Simultaneous strategy is considered as that performed via the same access and within the same day. Staged strategy is intended as that performed within 7 days from the first procedure. The sequence of angiographies is established on an individual patient basis by the cardiovascular and neurointerventional team according to clinical symptoms of the patients and after coronary or cerebrovascular angiography. After combined coronary and cerebral angiography, simultaneous or staged interventional strategy will be performed in patients with severe coronary and cerebral stenosis. Blood sample is obtained from artery sheath when performing coronary or cerebral angiography. Lipid levels, inflammation and atherosclerosis-related markers will be measured in this study.