Clinical trials: Ventricular
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
Premature Ventricular Complexes
Physical Impairments in Premature Ventricular Complex
Premature ventricular complexes may be observed in individuals without underlying disease due to factors such as physical inactivity, advanced age, smoking, male sex, and psychosocial disturbances, and in some cases may result in…
- Trial name
- NCT07396597
- Testing
- Physical Evaluations of Patients with Premature Ventricular Complex, Physical Evaluations of Healthy Individuals
- Where
- Turkey (Türkiye)
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Izmir Democracy University
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
Transposition of Great Arteries
Cardiovascular Magnetic Resonance in Adults With SysTemic Right Ventricle (STAR)
The main aim of the study is to explore HFs in SRV, comparing their magnitude and direction with that of subpulmonary RV and systemic LV.
- Trial name
- STAR (NCT05690854)
- Where
- Italy
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- IRCCS Policlinico S. Donato
Coronary Artery Disease
2D and Tissue Doppler Imaging Echocardiography Analysis of Left Ventricular Regional Wall Motion and Prognosis
Development of myocardial ischemia, and/or myocarditis would induce different changes in myocardial contraction behavior pattern,which maybe very subtle, and may not be detected by the 2D and m-mode echocardiography examinations.
- Trial name
- TDI (NCT01092429)
- Where
- Taiwan
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Chang Gung Memorial Hospital
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
Lipoprotein Disorder, Arterial Stiffness
The Effect of Lipoprotein (a) on Arterial Stiffness, Endothelial Function and Myocardial Deformation
1. Introduction Lipoprotein(a), or Lp(a), is a type of lipoprotein that is structurally similar to LDL (low-density lipoprotein) but carries an additional protein called apolipoprotein (a). 2.
- Conditions
- Lipoprotein Disorder, Arterial Stiffness, Endothelial Dysfunction
- Trial name
- Lpa_endo (NCT07324902)
- Where
- 2 sites in Greece
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- University of Athens
High Altitude Pulmonary Edema
Susceptibility to High Altitude Pulmonary Edema in Subjects With Increased Hypoxic Pulmonary Vasoconstriction
It has been shown, that subjects susceptible to high altitude pulmonary edema (HAPE)are characterized by an abnormal increase of pulmonary artery pressure at rest in hypoxia and during exercise in normoxia.
- Trial name
- NCT00559442
- Testing
- Altitude Exposure:
- Where
- Germany
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Heidelberg University
Dilated Cardiomyopathy, Heart Failure
Assessment of Right Ventricular Function in Advanced Heart Failure
We examined the feasibility and reliability of a combined echocardiographic and right heart catheterization (RHC) approach for right ventriculo/arterial (R-V/A) coupling assessment in HF patients with dilated cardiomyopathy…
- Trial name
- NCT03893760
- Testing
- Ventriculo-arterial coupling assessment (R-V/A)
- Where
- 2 sites in Italy
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- ITAB - Institute for Advanced Biomedical Technologies
Heart Failure
Cardiac Function and Inspiratory Muscles Performance
The purpose of this study is to determine whether ejection fraction and peak oxygen uptake have correlation on inspiratory muscle strength, chest wall volumes and quality of life in individuals with heart failure.
- Trial name
- NCT02763982
- Testing
- Physical evaluation
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Universidade Federal de Pernambuco
Heart Failure, Heart Failure With Reduced Ejection Fraction
Efficacy of AI EF Screening by Using Smartphone Application Recorded PLAX View Cardiac Ultrasound Video Clips
Assessing the Efficacy of Artificial Intelligence in Left Ventricular Function Screening Using Parasternal Long Axis View Cardiac Ultrasound Video Clips ABSTRACT BACKGROUND: Echocardiography serves as a fundamental diagnostic…
- Conditions
- Heart Failure, Heart Failure With Reduced Ejection Fraction, Cardiac Failure, Echocardiography
- Trial name
- NCT06330103
- Testing
- Easy EF
- Where
- Thailand
- Volunteers
- 923 people, healthy volunteers welcome
- Sponsor
- Rayong Hospital
Hypertension
Blood Pressure Follow-up Study in Two Chinese Cohorts(C-BPCS)
Essential hypertension is a complex trait which results from interaction between environmental factors and genetic factors. The aim of this study is to investigate the effects of interaction between environmental factors and…
- Trial name
- C-BPCS (NCT02734472)
- Testing
- Incidence and risk factors of hypertension
- Where
- China
- Volunteers
- 5,298 people, healthy volunteers welcome
- Sponsor
- First Affiliated Hospital Xi'an Jiaotong University
Cardiomyopathy
Characterization of Sympathetic Nerve Activity in Stress Cardiomyopathy
Stress (Takotsubo) cardiomyopathy (SC) is a peculiar form of acute, reversible myocardial dysfunction predominantly affecting the apical and mid left ventricular segments.
- Trial name
- NCT01048125
- Testing
- Sympathetic Nerve Activity, Mental Stress Test (Color Word Test), The Modified Oxford Technique for Baroreflex Sensitivity
- Where
- United States
- Volunteers
- 2 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Pacemaker DDD
Right Ventricular Septal Versus Apical Pacing: Echocardiographic Study
This study aims to compare the effect right ventricular apical versus septal pacing on left ventricular function by deformation imaging using 2D speckle tracking echocardiography.
- Trial name
- NCT06045143
- Testing
- Patients undergoing DDD pacemaker implantation
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Assiut University
Ventricular Septal Defect
Longterm Outcome After Ventricular Septal Defect Closure
Isolated ventricular septal defect (VSD) is a well know congenital heart anomaly. If discovered in infancy or early childhood surgical intervention can be of necessity depending on the size of the defect, to assure a healthy…
- Trial name
- NCT02138435
- Testing
- MRI exercise test, Gas-exchange exercise test
- Where
- Denmark
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Hypotension on Induction
The Role of Left Ventricular Outflow Tract (LVOT) Velocity-time Integral (VTI) and Respiratory Variability at Peak Rate (Vpeak) in Predicting Hypotension After General Anesthesia Induction
Preoperatively, patients will undergo transthoracic echocardiography measurements approximately 15-30 minutes before induction. TTE will be performed on all patients by an experienced observer; the echocardiography device will be…
- Trial name
- LVOT-VTI-hypot (NCT07121699)
- Testing
- Inotrope
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Aydin Adnan Menderes University
Ventricular Premature Complexes, Atrial Premature Complexes
Oral Magnesium Supplementation in Athletes With Premature Ventricular Contractions or Premature Atrial Contractions.
Magnesium is a mineral which is essential to many of the processes which happen in the body. This includes normal function of muscles; including the heart.
- Trial name
- NCT04186728
- Testing
- Magnesium glycinate
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Left Ventricular Hypertrophy
Impact of Physical Activity on Left Ventricular Mass and Lipid Metabolism
Prospective study on the structural and functional changes in the heart of adult women assessed by echocardiogram and in lipid metabolism that occur in response to physical training.
- Trial name
- NCT01199211
- Testing
- Exercise training, women, marathon
- Where
- United States
- Volunteers
- 187 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Healthy
Atrial and Ventricular Wall Stress During Breathing
Healthy reclining adult volunteers, with Valsalva manoeuver, Muller manoeuver, light continuous positive airway pressure by mask, passive leg raising, and maximal hand-grip. Ultrasound heart images captured before and during.
- Trial name
- NCT03436030
- Testing
- Simple breathing manuevers during brief echocardiographic imaging
- Where
- Sweden
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Umeå University
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