Active clinical trials for "Dilatation, Pathologic"

The objectives of this post market registry are to evaluate the safety and durability of treatment effect up to 3 years following cross-linking performed with Photrexa Viscous (riboflavin 5'- phosphate in 20% dextran ophthalmic solution), Photrexa (riboflavin 5'- phosphate ophthalmic solution), and the KXL System in patients with corneal ectasia following refractive surgery.

The goal of this observational study is to comprehensively investigate the current prevalence, morphological characteristics, risk factors for the development, complications as well as long-term prognosis of coronary artery aneurysm and ectasia (CAAE) in the Polish population. Data obtained from the CARED-POL Registry will enable the selection of morphological risk factors for the unfavorable course of CAAE, including the progression and development of giant aneurysms, aneurysm clotting with vessel occlusion, and thromboembolic complications. Comparing the safety and effectiveness of available CAAE treatment methods in individual patient subgroups will allow individualization of treatment, including anticoagulant therapy.

We will evaluate all out-patients and in-patients with cirrhosis, who undergo upper gastrointestinal endoscopy (EGD) in the Department of Hepatology, Institute of Liver and Biliary Sciences (ILBS), for inclusion. Patients with cirrhosis, with age >18-years, who have characteristic findings of GAVE on endoscopy will be included in this study. Their clinical and biochemical features, and endoscopy findings will be compared with a gender and age-matched control group of cirrhosis without GAVE. This observational, case-control study will aim to define the predictors of GAVE in patients with cirrhosis.

This study will compare shoulder range of motion assessment using the Kinect motion tracking system vs goniometer in patients with adhesive capsulitis (frozen shoulder) undergoing ultrasound-guided capsular distention procedures (standard of care). The investigators hypothesize that, for shoulder adhesive capsulitis, the Kinect Motion Analysis 2.0 system will provide reliable results in a shorter and more efficient amount of time in comparison to traditional goniometer methods.

The purpose of this study is long-term follow up of patients with corneal diseases to analyze the quality of surgical interventions and diagnosis. Corneal ectasia, especially keratoconus, is a corneal disease that leads to an irreversible loss of visual acuity while the cornea becomes steeper, thinner and irregular. For these patients, surgical intervention (e.g. corneal cross-linking) is performed, in case of disease progression. Overall, a long-term follow up is needed to evaluate an early disease progression as well as corneal stability after surgical intervention.

overall aim: To compare the efficacy and safety of endoscopic band ligation and endoscopic argon plasma coagulation for the management of gastric antral vascular ectasia. Secondary aims: Study risk factors of GAVE. Prevalence of GAVE among causes of non-variceal gastrointestinal bleeding.

The study objective of this project is to examine the mechanisms of the venous distension reflex (VDR) in humans. We hypothesize that COX blockade with ketorolac tromethamine, an intravenous NSAID, will attenuate the muscle sympathetic nerve activity (MSNA) response to limb venous distension. To gain further insight into whether the COX byproducts directly stimulate chemically-sensitive afferents, or enable venodilation and indirectly evoke afferent stimulation, we will measure vein size using 3T MRI during venous distention with and without ketorolac infusions.

This research is being done to find out whether distension of veins in legs will cause a rise in blood pressure (orthostatic hypertension).

Drug-coated balloon (DCB), as an implant-free treatment technique, has been widely used in coronary interventional therapy, effectively solving the problem of restenosis caused by traditional stent implantation, and providing a treatment option for patients with coronary heart disease with high blood risk. However, in DCB treatment of coronary artery lesions, the incidence of dissection is as high as 10-20% when the balloon is predilated, which often requires salvage stent implantation, resulting in the treatment failure of DCB and bringing great hidden dangers to patients. The main reason was that excessive balloon predilation was caused by the standard of vascular anatomy (residual lumen stenosis less than 30%). The resting full cycle ratio (RFR) is a reliable method for determining the presence of functional ischemia in coronary artery lesions and enables immediate detection. We hypothesized that RFR-guided stepped-balloon dilation could reduce the incidence of dissection and increase the success rate of DCB treatment. Fifty patients who planned to receive DCB treatment were randomly divided into balloon dilation alone (n=25) and RFR-guided stepped-balloon dilation group (n=25). The primary endpoint was the success rate of DCB treatment. This study will provide a functional evaluation based balloon predilation method for DCB treatment, making DCB treatment for orthotopic coronary artery disease more safe and effective.

The ITACA study is a prospective, observational no profit registry enrolling patients with Acute Coronary Syndrome and angiographic evidence of coronary aneurysms and/or ectasia.