This study is enrolling participants who completed the FARAPULSE ADVENT study and are now nearing the 3 year post atrial fibrillation ablation timepoint. Atrial fibrillation is an irregular heart rhythm caused by electrical signals misfiring. An ablation is a procedure in which those signals are targeted and destroyed to stop the atrial fibrillation. This study will consist of reviewing and collecting medical records since the ablation procedure as well as optional questionnaires and wearing a heart monitor for 7 days to capture the heart's electrical activity. There are no study related follow up visits. Study related risks include loss of confidentiality and possible skin reaction to the electrodes (sticky patches placed on the chest to detect the heart's electrical activity). Individual benefit is not expected but the information learned may contribute to knowledge in this field.

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 studying the investigational medication EDG-7500 for the treatment of obstructive and non obstructive hypertrophic cardiomyoapthy. Investigational means it is not approved for sale by the Food and Drug Administration (FDA) The study will test to see if the medication can help the heart expand and fill to help its workload. The study has 4 Parts, each of varying durations. The study will last a minimum of 6 weeks to a maximum of 18 months. Study related procedures include physical exam, electrocardiogram (ECG) - a tracing of the heart's electrical activity, echocardiogram (echo) - ultrasound test of the heart, blood and urine collection, possible genetic testing, and exercise testing. Risks related to the study medication include atrial fibrillation (fast irregular heartbeat), constipation, diarrhea, dizziness/lightheadedness and upper respiratory infection. Other study related risks include loss of confidentiality, unknown risks and risks related to procedures.

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 enrolling subjects with high blood pressure who just received a pacemaker (an implantable device placed in the upper chest that monitors the heart rate and can send an electrical signal if needed to pace the heart to maintain a normal heart rate) or are about to undergo a pacemaker implant. This is a randomized study meaning subjects will be assigned by chance to have a new program downloaded to the pacemaker to help control blood pressure or to not receive the program. Subjects will have a 50:50 chance to receive the program. The new program is called AVIM therapy and it is investigational meaning it has not been approved by the US Food and Drug Administration. (FDA) Participation in this study will last about 36 months and include about 10 visits. Study related procedures include blood pressure monitoring including wearing a 24 hour blood pressure monitor, blood work, questionnaires, echocardiogram - an ultrasound test of the heart, pacemaker interrogation (meaning your pacemaker is checked to obtain the information stored on it) and randomization. Study related risks include risks related to the software download such as the risk that the software will not help control blood pressure, risks related to study related procedures and the risk of the loss of confidentiality.

This study is enrolling subjects who are undergoing an atrial fibrillation ablation. Atrial fibrillation (AF) is a condition where the heart beats rapidly and irregularly. An ablation procedure can destroy the tissue in the heart that transmits the irregular electrical signals that cause the AF. The ablation procedure will use the PulseSelect™ PFA System which is approved by the Food and Drug Administration (FDA) and uses electroporation (electrical pulses) to destroy the heart tissue.

This study will last about 2 years and include up to 6 visits, some of which can be done virtually. Study procedures include data collection, questionnaires, electrocardiogram (ECG) - which is a tracing of the heart's electrical activity, echocardiogram (Echo) - which is an ultrasound test of the heart, and a Holter monitor - which is a wearable device that continuously records heart rhythm.

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.