View clinical trials related to Constriction, Pathologic.
Filter by:Intravenous (IV) recombinant tissue plasminogen activator is the standard of care for patients with acute ischemic stroke (AIS) who present to the hospital within 4.5 hours of symptom onset. However, IV thrombolysis, even bridging thrombolysis (combining intravenous thrombolysis and mechanical thrombectomy) has limited efficacy among patients who had occlusive lesions associated with highgrade arterial stenosis requiring revascularization to improve neurological deficits. The investigators evaluated whether rescue stenting results in good outcomes among patients after the failure of intravenous thrombolysis and bridging thrombolysis.
In this study, the investigators aimed to determine whether the preoperative Monocyte/HDL ratio would be a predictor of postoperative mortality and morbidity in patients who underwent aortic valve replacement due to aortic stenosis.
A Multicenter, Prospective, Randomized Controlled Trial to Evaluate the Efficacy and Safety of DKutting Balloon Versus Chocolate Balloon in the Treatment of Femoral and Popliteal Artery Stenosis
Punctal stenosis is a progressive constriction of the puncta with resultant epiphora. One of the most effective treatment options is 1- to 4-snip punctoplasty combined with or without Mitomycin-C.
The aim of this study is to compare the effect of different anesthetic drugs used for induction of anesthesia ketamine versus sevoflurane on the RV pressure in pediatrics undergoing balloon dilatation for congenital pulmonary stenosis.
The objective of the present study is to investigate to hemodynamic profile at rest and during peak exercise of patients with suspected severe aortic stenosis and to compare flow- and pressure changes between high gradient patients and low gradient patients.
Carotid artery stenosis due to atherosclerotic plaques accounts for an important cause of ischemic stroke. Current research seeks to risk stratify asymptomatic patients by characterizing rupture-prone plaques. Currently no single imaging modality can reliably identify those plaques before surgery. Recently, the 3D ultrasound (US) and the assessment of the mechanical stress on the vessel wall have been proposed as non-invasive tools that could play a role in the diagnostic work-up. Data of histological validation, however, are still needed. In this research, 3D US, non-invasive elastography, Finite Element Analysis of computed tomography angiography images and the study of the autonomic cardiovascular control will be used to identify preoperatively the vulnerable plaque in patients undergoing carotid endarterectomy. The results will be compared to that of histology of the removed plaque, aiming to provide a validation to each method for a possible application in the daily practice.
To assess safety and effectiveness in the long term of percutaneous insertion of Biodegradable (BD) Biliary Stents for the treatment of benign biliary strictures, in a single center experience.
The primary aim of this study was to compare spinal proprioception in patients with Lumbal Spinal Stenosis (LSS) (with or without surgery) and healthy controls. A secondary aim was to investigate the effect of pain at target positions where repositioning error (RE) was assessed and TLF flexibility on spinal proprioception deficiency.This cross-sectional and healthy controlled study was conducted in patients with LSS. Participants will be grouped as: Healthy control (Group I), chronic low back pain due to LSS (Group II) and undergoing surgery due to LSS (Group III). Reposition error (RE), pain at target positions of RE and flexibility of the TLF were assesed with iphone tiltmeter app, VAS and goniometric platform, respectively. Target positions of reposition error were: 30º forward bending and 15º backward bending in sitting and standing.
The objective of this study is to evaluate safety and effectiveness of the SINOMED CBC coronary dilatation catheter during PCI in subjects with stenotic coronary arteries.