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.

This study involves collecting data and physician feedback while using the ViewFlex X System during a routine electrophysiology (EP) procedure. An electrophysiology procedure is done to correct an electrical abnormality in the heart. The ViewFlex X System is considered investigational meaning it has not been approved for commercial use by the Food and Drug Administration (FDA). The ViewFlex System will obtain and integrate heart images with the mapping information obtained during your procedure. There is also an option to have the procedure videotaped. Study participation lasts until hospital discharge post procedure. Study related risks include risks associated with using the ViewFlex X System, loss of confidentiality and unknown risks.

This study is enrolling subjects who are referred for a ventricular tachycardia (VT) ablation. VT is an abnormal heart rhythm that comes from the lower chambers of the heart. An ablation is a procedure to treat abnormal heart rhythms by identifying where the abnormal heart rhythm is starting and then scarring the tissue as a way to stop them. In this study the scars are being made by freezing the tissue. This is called cryoablation. This study will use the Adagio VT Cryoablation System (vCLAS™ Catheter and Console) to perform the cryoablation. This system is considered investigational meaning it has not been approved for use outside of this study by the Food and Drug Administration (FDA). Study participation will last about one year and include the following visits: screening/baseline, procedure, pre discharge, 1, 3, 6 and 12 months. There will also be a telephone call at day 7 post ablation procedure. The study will also collect data including medical history and medications, physical exam findings, data from the procedure, echocardiogram (ultrasound test of the heart, electrocardiogram or ECG (test that captures the electrical activity of the heart) and cardiac MRI. The primary study risks are those related to the ablation procedure including pain, abnormal heart rhythms, low or high blood pressure, and blood vessel or heart muscle damage. There is potential benefit as the procedure may eliminate the abnormal heart rhythm and the information gained may help others with this condition in the future.

This study is enrolling subjects with an abnormal heart rhythm called ventricular tachycardia (VT - rapid heart beat coming from the bottom of the heart) that has come back despite treatment. This is a randomized study meaning subjects will be assigned to one of two groups and then undergo either a standard catheter ablation or a new treatment called cardiac radioablation for their VT. You will have a 50:50 chance of being assigned to either group. A standard catheter ablation is done by placing catheters (long hollow tubes) into a large blood vessel at the top of the leg, guiding them to the heart to first identify the signals causing the VT and then use radiofrequency (heat) energy to burn and stop these signals to stop the VT. The cardiac radioablation is an investigational treatment meaning it is not yet approved for routine clinical use by the Food and Drug Administration (FDA). Cardiac radioablation is performed in the radiation oncology department and uses radiation therapy to treat the signals causing the VT. Participation in this study will last up to 5 years and inlcude about 15 visits. Study related procedures include medical record review and data collection, electrocardiogram (tracing of heart's electrical activity), echocardiogram (ultrasound test of the heart), CT scans, blood work, questionnaires, implantable cardioverter defibrillation (ICD - device implanted in your chest that monitors and treats abnormal heart rhythms), and ablation procedure per randomization. Risks include fatigue, changes in the appearance of the lungs in the cardiac radioablation group, fatigue, pain, low or high blood pressure or excessive bruising or bleeding at the catheter insertion side in the cardiac ablation arm. There are also study procedure related risks, and risks that are not known. There is potential benefit to you and to others in learning how to better treat others in the future with this condition.

This study is enrolling subjects who are scheduled for a ventricular tachycardia (VT) ablation. Ventricular tachycardia is a fast heartbeat that starts with an abnormal signal in the lower chambers of the heart, which are the ventricles. An ablation is a procedure where a catheter (thin, flexible tube) with a tip that can deliver energy is used to burn the heart tissue where those abnormal signals are coming from. The catheter being used in this study is called the FlexAbilityTM Ablation Catheter and was recently approved for commercial use by the Food and Drug Administration. (FDA) Since it is newly approved, the FDA wants to continue collecting more information about the catheter and its use, so this study is called a post approval study. Participation in this study will take about 1 year. During this year, data will be collected including your medical history, cardiac medication use, ablation procedure, and any medical events that may occur. You will be seen or contacted 4 times. There is a risk of loss of confidentiality and there may be risks that are not yet known. There may be no direct benefit to you but it is hoped the information learned may contribute to knowledge in this field.