Clinical trials: Constriction
Aortic Stenosis
Loss of Y Chromosome in Aortic Stenosis
The most common heart valve disease in humans is aortic stenosis which is a critical narrowing of the valve through which the heart has to pump blood to the rest of the body.
- Trial name
- NCT06595407
- Testing
- Blood analysis for loss-of-Y chromosome
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of Virginia
Glutathione Peroxidase Activity, Aortic Stenosis
GPx Activity in Subjects With Aortic Stenosis Undergoing TAVR
The aim of this project is to investigate the association of glutathione peroxidase (GPx) and severe aortic stenosis (AS), as well as the impact of transcatheter aortic valve replacement (TAVR) on GPx activity post-procedure.
- Conditions
- Glutathione Peroxidase Activity, Aortic Stenosis, Transcatheter Aortic Valve Replacement
- Trial name
- NCT04268160
- Testing
- Blood draw to measure GPx activity, Blood draw to measure SOD activity, Blood draw to measure Lp(a) levels
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Florida
Low Back Pain, Leg Pain
Safety and Effectiveness Study of the TOPS System, a Total Posterior Arthroplasty Implant Designed to Alleviate Pain Resulting From Moderate to Severe Lumbar Stenosis
The purpose of this multi-center, randomized, clinical study is to establish the safety and effectiveness of the TOPS™ System, used following decompression, in the treatment of lower back and leg pain with, or without spinal…
- Conditions
- Low Back Pain, Leg Pain, Spondylolisthesis, Lumbar Spinal Stenosis
- Trial name
- NCT00405691
- Testing
- "TOPS System" - Total Posterior Arthroplasty Implant
- Where
- 16 sites in United States
- Volunteers
- 450 people, healthy volunteers welcome
- Sponsor
- Impliant, Ltd.
Class III Malocclusion, Maxillary Deficiency
Evaluation of Pain and Functional Impairments When Treating Class III Malocclusion Using Two Treatment Procedures
A clinical examination of each recalled candidate patient will be carried out at Adib Al Lahham Centre at the Ministry of Health Damascus to ensure that he/she meets the inclusion criteria.
- Trial name
- NCT06877780
- Testing
- RMR with SME, BAIMT with RME
- Where
- Syria
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Damascus University
Hypertrophic Cardiomyopathies, Athlete Heart
Role of CMR-FT in Assessment of HCM and Athlete's Heart.
Using cardiac MRI feature tracking to asses myocardial motion differences in athlete's heart and discovered hypertrophic cardiomyopathy patients to increase diagnostic accuracy of hypertrophic cardiomyopathy.
- Trial name
- NCT06859827
- Where
- Egypt
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Sohag University
Aortic Stenosis
Deep Learning Enhanced Detection of Aortic Stenosis - The DETECT-AS-Diagnostic Study
The DETECT-AS Diagnostic Study will assess the performance of artificial intelligence (AI) risk predictions to detect aortic stenosis using results from portable electrocardiogram (ECG) and cardiac ultrasound devices.
- Trial name
- NCT06749145
- Testing
- Portable 1-lead electrocardiogram, Point-of-care ultrasound, AI-ECG risk algorithm
- Where
- 3 sites in United States
- Volunteers
- 410 people, healthy volunteers welcome
- Sponsor
- Yale University
Myocardial Infarction, Myocardial Ischemia
18F-fluorocholine PET-MR Imaging of Coronary Plaque Vulnerability
This study is designed as a prospective observational feasibility study. The investigators will study whether vulnerable plaques on OCT (fibrous cap ≤ 70 μm) show a locally increased uptake of 18F-choline on PET-MRI compared to…
- Conditions
- Myocardial Infarction, Myocardial Ischemia, Atherosclerosis, Coronary Artery Disease
- Trial name
- NCT03252990
- Testing
- PET-MRI, Optical Coherence Tomography
- Where
- Netherlands
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
Degeneration Spine, Cervical Radiculopathy
Salt Water Gargling on Swallowing Following ACDF
The goal of this randomized control trial is to collect sufficient preliminary data on the efficacy of sodium chloride, hereafter referred to as "saltwater" or "saline" in reducing the difficulty of swallowing following…
- Conditions
- Degeneration Spine, Cervical Radiculopathy, Cervical Stenosis, Cervical Spondylosis
- Trial name
- NCT06475365
- Testing
- Sodium chloride gargle
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Southern California
Degenerative Disc Disease, Spinal Stenosis
Spine Patient Outcomes Registry for Biomet/EBI (Electro-Biology, Inc)
The purpose of this patient registry is to prospectively collect data on patients who are having spinal surgery with EBI and Interpore Cross Spine Products.
- Trial name
- SPO (NCT00726284)
- Where
- 5 sites in United States
- Volunteers
- 651 people, healthy volunteers welcome
- Sponsor
- Zimmer Biomet
Maxillary Constriction in Growing Children, Transverse Maxillary Deficiency
Effects of BREA and MFT Expansion Appliances on Upper Airway Dimensions
This retrospective study evaluated whether orthodontic expansion using two types of appliances, a bimaxillary removable expansion appliance (BREA) and a maxillary fixed three screw palatal expander (MFT), influences upper airway…
- Conditions
- Maxillary Constriction in Growing Children, Transverse Maxillary Deficiency, Upper Airway Morphology in Children, Orthodontic Expansion Effects
- Trial name
- NCT07456917
- Testing
- Maxillary fixed three screw palatal expander (MFT), Bimaxillary removable expansion appliance (BREA)
- Where
- Poland
- Volunteers
- 79 people, healthy volunteers welcome
- Sponsor
- Medical University of Silesia
Carotid Stenosis, Optical Coherence Tomography (OCT)
Endovascular Treatment of Cerebrovascular Diseases Guided by Optical Coherence Tomography (OCT) Technology（CVD-OCT）
OCT techniques have been used in the assessment of both intracranial and extracranial lesions.(1) Preprocedural evaluation: The morphologic characteristics of carotid atherosclerotic plaques can be evaluated by OCT before surgery…
- Conditions
- Carotid Stenosis, Optical Coherence Tomography (OCT), Endovascular Treatment
- Trial name
- （CVD-OCT) (NCT06986330)
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- First Affiliated Hospital of Wannan Medical College
Carotid Stenosis
Carotid Endarterectomy Versus Carotid Artery Stenting? A Prospective Comparison of Neuropsychological Outcome in Patients With Carotid Stenosis.
In this prospective study, patients with carotid stenosis will be randomly assigned to one of the two surgical procedures (carotid endarterectomy (CEA) and carotid stenting (CAS)).
- Trial name
- NCT01337128
- Testing
- Carotid endarterectomy (CEA), Carotid stenting (CAS), Neurocognitive functions
- Where
- Belgium
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University Ghent
Right Ventricle, Pulmonary Valve Stenosis
Follow Up on Freestyle Valves in Children
The purpose of this study is to determine if the Medtronic Freestyle porcine valve is effective over a long period of time when it is used to replace the valve that normally allows blood to flow from the right lower pumping…
- Conditions
- Right Ventricle, Pulmonary Valve Stenosis, Pulmonary Valve Atresia
- Trial name
- NCT00385112
- Testing
- Echocardiogram
- Where
- United States
- Volunteers
- 98 people, healthy volunteers welcome
- Sponsor
- Emory University
Lumbar Spinal Stenosis, Paraspinal Muscle
The Correlation Between Degeneration of Paraspinal Muscle and Outcome of Patients With Lumbar Spinal Stenosis
The photographical and functional parameters of paravertebral muscle in patients with lumbar spinal stenosis will be measured to investigate the correlation between paravertebral muscle degeneration and symptoms and prognosis of…
- Trial name
- NCT04688944
- Testing
- observation
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Peking University Third Hospital
Carotid Stenosis
Optical Coherence Tomography Angiography Evaluation of Ocular Changes in Patients With Carotid Artery Stenosis
This study aims to evaluate ocular changes in patients with carotid artery stenosis by optical coherence tomography angiography before and after carotid artery revascularization procedure.
- Trial name
- NCT04326842
- Testing
- Carotid artery revascularization procedure, Optical coherence tomography angiography
- Where
- China
- Volunteers
- 129 people, healthy volunteers welcome
- Sponsor
- First Affiliated Hospital of Harbin Medical University
Cerebral Venous Sinus Thrombosis
Glymphatic Function and White Matter Integrity in Cerebral Venous Disorders
Cerebral venous disorders, including cerebral venous sinus stenosis (CVSS) and cerebral venous sinus thrombosis (CVST), can obstruct venous blood drainage, leading to intracranial hypertension.
- Trial name
- NCT07072663
- Testing
- Baseline and 3-month follow-up, Baseline
- Where
- China
- Volunteers
- 149 people, healthy volunteers welcome
- Sponsor
- Xuanwu Hospital, Beijing
Carotid Artery Diseases, Stroke
Clinical and Laboratory Biomarkers in Patients With Atherothrombotic Stroke
Aim of the present study is to investigate molecular and clinical markers in patients with atherosclerotic carotid stenosis (ACAS) in the ischemic stroke acute phase.
- Trial name
- CLAST (NCT02450721)
- Testing
- Biomarkers serum level measurement
- Where
- Russia
- Volunteers
- 97 people, healthy volunteers welcome
- Sponsor
- St. Petersburg State Pavlov Medical University
Stenoses, Carotid Artery
Selective Versus Routine Shunting in Carotid Endarterectomy Patients
The project involves prospectively randomizing patients to either routine carotid shunting or selective carotid shunting during Carotid endarterectomy (CEA) under general anesthesia (GA) to see the difference in post-op…
- Trial name
- NCT00967486
- Testing
- Carotid endarterectomy with routine shount, Carotid endarterectomy with selective shunt
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- CAMC Health System
Biliary Stricture
WallFlex Biliary Fully Covered (FC) Chronic Pancreatitis Study
The purpose of this of this study is to compare the use of Self Expanding Metal Stents (SEMS) to plastic stents for the treatment of benign biliary strictures secondary to chronic pancreatitis as it pertains to stricture…
- Trial name
- NCT01543256
- Testing
- WallFlex™ Biliary RX Fully Covered Stent System RMV, Commercially available Plastic Stent Per Investigator preference
- Where
- 14 sites in Australia, Austria and 9 more
- Volunteers
- 172 people, healthy volunteers welcome
- Sponsor
- Boston Scientific Corporation
Internal Carotid Artery Stenosis
The Observation About the Effects of Internal Carotid Artery Stenosis on Fundus Vessels and the Changes of Fundus Vessels After Interventional Therapy
The investigators plan to collect 30 participants with internal carotid artery stenosis to observed the relationship between the degree of internal carotid artery stenosis and fundus vessels （and blood flow）density before…
- Trial name
- NCT05260229
- Where
- China
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Qilu Hospital of Shandong University