The purpose of the study is to evaluate the safety and how well the medication sotatercept works versus placebo in treating Heart Failure with a Preserved Ejection Fraction. The study will also look at information obtained from the tests performed as part of the study to see if subjects have improvement in symptoms of heart failure. Participation in this study will last approximately 26 months. During the study period subjects will be asked to attend regular study visits with the research coordinator. These visits will include such activities as blood tests, questionnaires, physical evaluation by a study doctor, a right heart catheterization with exercise, echocardiogram, and 6 minute hall walks. There will be 35 visits as part of participation in this clinical trial.

Participants will be randomized to either the treatment group (and receive the medication) or the control group (and not receive the medication). Subjects will have a 2:1 chance of receiving the study medication during their participation in the trial. The treatment assignment is determined by randomization, where a computer selects at random which treatment group you will be in (like drawing straws). Neither the subject, nor the blinded personnel will know which group subjects are in. Neither the subject nor the study doctor will decide what group subjects are assigned. Participants from the placebo group in CADENCE who enter HARMONIZE at Visit 9a will be randomized 1:1 to one of the active treatment groups. Participants from an active treatment group in CADENCE entering HARMONIZE after Visit 9a will be allocated to continue in the same treatment group (ie, sotatercept dose level) as in CADENCE.

The objective of the study is to evaluate the safety and efficacy of the BrioVAD System by demonstrating non-inferiority to the HeartMate 3™ (HM3) LVAS (Abbott) when used for the treatment of advanced, refractory, left ventricular heart failure.

This study is enrolling subjects with tricuspid regurgitation, which is what occurs when the tricuspid heart valve on the right side of the heart does not close properly and blood leaks backwards. Over time this can lead to symptoms like shortness of breath and fluid build up in the legs, abdomen, and lungs. This study involves a new investigational device called the TricValve® Transcatheter Bicaval Valve system to treat the leaky valve. Investigational means it is not approved for commercial use by the Food and Drug Administration. (FDA) This study will last about 5 years and include about 11 visits. Study related procedures include physical exams, right heart catheterization (an invasive procedure to check pressures inside the heart), echocardiograms (ultrasound test of the heart), CT scan, blood work, questionnaires, hall walk test and procedure to place the device. Risks include those related to the device and procedure such as infection, failure of the device, worsening of your symptoms or other cardiac complications. There are also risks associated with study testing such as radiation risks, blood draw risks, loss of confidentiality and unknown risks. There is potential benefit to you and to others in the future from what is learned from this study.

The purpose of this study is to find out if the investigational drug/study medicine (omecamtiv mecarbil) can reduce the risk of the effects of heart failure (HF), hospitalization, transplantation, or death. It is hoped that the study medicine increases the heart's ability to pump blood throughout the body, but we need to learn more about its effect in patients who suffer the most from HF symptoms. "Investigational" means that the study medicine is still being tested in research studies and has not been approved by the U.S. Food and Drug Administration (FDA). The study drug will be taken by mouth twice daily.

Participation in this study will last for approximately 3 years, however, participation could last from a few weeks to a few years depending on your time of enrollment. These visits will include physical exams, blood draws, electrocardiograms (ECG), echocardiogram (Echo), blood draws, questionnaires along with receiving the study drug. Participants will receive the study drug and have a 2 week wash out period to ensure tolerance. From there, participants will be randomized to either the treatment group (and receive the medication) or the control group (and not receive the medication). The treatment assignment is determined by randomization, where a computer selects at random which treatment group you will be in (like drawing straws). Neither the subject, nor the blinded study personnel will know which group subjects are in. Neither the subject nor the study doctor or study staff will decide what group subjects are assigned.

This study is enrolling subjects with heart failure and a reduced ejection fraction meaning the heart does not pump enough blood to meet the body's needs. This study is researching an investigational device (study device) called the Alleviant ALV1 System. Investigational means it has not been approved for commercial use by the Food and Drug Administration. (FDA) This study will test the safety and effectiveness of the Alleviant ALV1 System. The Alleviant ALV1 System is intended to create a shunt (an opening) in the heart to allow for proper blood flow through the heart which may improve your symptoms. No device is left in your heart it is just used to create the shunt. This is a randomized study which means subjects are assigned by chance to either have the study device create this shunt or not have the study device create the shunt. Randomization is 50/50 meaning there is a 50% chance to have the study device create a shunt and a 50% chance the study device will not be used. Using the study device to create the shunt is performed during a right heart catheterization (RHC) so all subjects will undergo the RHC but only 50% will have the shunt. Neither the subjects nor the study doctor will know which group subjects are randomized to but other study staff will know in the event this information is needed. All subjects will stay overnight in the hospital after the procedure. Other study related procedures include echocardiograms - ultrasound test of the heart, electrocardiograms (ECG) - a tracing of the heart's electrical activity, blood work, questionnaires, 6 minute hall walk test, and assessments of heart failure status. Risks include risks related to the study device including blood vessel damage from placing the device in the vein to get to the heart, risks from the right heart catheterization such as bleeding or bruising, abnormal heart beats, and risks related to study related procedures. There may be risks that are not known at this time. Participation in this study is expected to last about 60 months and include approximately 15 in person visits and 3 telephone calls.

Atrial fibrillation (AF) is an arrhythmia in which the heartbeat becomes irregular due to abnormal electrical signals in the upper chambers of the heart, called the atria. This leads to ineffective pumping of blood by the atria. Complications related to atrial fibrillation are heart failure, stroke, heart palpitations and fatigue. This study is motivated by the need to address the increasing prevalence of AF, which is the most common sustained arrhythmia worldwide. While treatment options for AF include the use of antiarrhythmic drugs which are a group of medications used to treat irregular heartbeats, and catheter ablation procedures, the latter have been associated with significantly better outcomes. Participation in this study consists of 2 phases, 1- randomization 2- ablation procedure and follow-up period.
The randomization to the different groups is considered the research part of the study. Subjects will have equal chance of being randomized (like tossing a coin) to one of two AF ablation treatment groups. All follow up will be according to stand of care practices. Risks include stroke, pericarditis, acute and delayed perforation, hemolysis, acute kidney injury, and coronary artery spasm.

This study is an open label, Comparative Effectiveness Research study in patients who receive a heart transplant. Subjects will be enrolled into the study while under evaluation for heart transplantation or on the transplant waiting list prior to heart transplantation. All subjects will follow the center's standard of care surveillance schedule from transplant through 4 weeks post-transplantation. The study objective is to compare the effectiveness of rejection surveillance of heart transplant recipients with Prospera dd-cfDNA to rejection surveillance with endomyocardial biopsy (EMB) in the first post-transplant year.
The Prospera™ test is a non-invasive test intended to detect and quantify the fraction of donor-derived cell-free DNA (dd-cfDNA) to supplement management and surveillance of allograft rejection in patients who have undergone organ transplantation. The subjects may undergo blood draws, echocardiogrphys, medical history and physical exams, antibody testing, nuclear imaging, and MRI as apart of the study. The study period will be during the first 12 months post-transplant. Quality of life questionnaires will be completed at week 4, month 6 and month 12 post-transplant.

This study is asking for volunteers who have been diagnosed with acute pulmonary embolism (PE). PE is a blood clot that blocks and stops blood flow to an artery in the lung. PE usually results from a blood clot in the leg that travels to the lung. Patients with PE may have shortness of breath, chest pain and/or an irregular heartbeat. This study will use a device known as the Vertex Pulmonary Embolectomy System. The Vertex Pulmonary Embolectomy System is a medical device which is indicated for use in the pulmonary arteries for the non-surgical removal of blood clots from blood vessels. The Vertex System has not yet been approved for use by the Food and Drug Administration (FDA) but is approved for use in this study for PE removal. Your study doctor will inform you about the risks that are related to your PE procedure. The risks associated with the study include loss of confidentiality and unknown risks. There will be no benefit to you, but it is hoped the information gained will add to the understanding of treatment options for others in the future. You do not have to participate to have your condition treated. This study will take 30 days to complete.

This clinical research study is enrolling adults with diabetes, prediabetes or metabolic syndrome. The purpose of the study is to learn more about preventing cardiovascular disease. A heart CT scan will be done at screening and then 2 years later. Qualified participants will be randomly assigned to one of two groups. Participants in the usual care group, will continue to receive care from usual health care provider. In the personalized care group, participants will receive additional health care from a remote cardiologist led team which will individualize treatment based on Cleerly CAD staging results of the heart CT scan. Study is expected to last 3 1/2 years on average but could be 2 - 5 years. Participation is free.

The purpose of this study is to determine if patients with heart failure (HF, meaning a weak heart) with left ventricular ejection fraction (LVEF) ≤ 50% and with an abnormal heart beat can benefit from having pacemaker leads placed in a different location in the heart. We know that people with a weak heart and an abnormal heart beat can benefit from having a pacemaker. Participants in this study will be randomly assigned (like flipping a coin) to one of two treatments (A or B), both of which are standard of care heart pacing treatments:
A. Pacing the heart from two locations in the left ventricle (lower left chamber of the heart)
B. Pacing the heart from one of two other places in the heart (the "His" or the left bundle branch)

The purpose of this study is to compare side by side these two treatments and evaluate if one is better than the other.