160 Clinical Trials for Various Conditions
The purpose of this study is to evaluate the clinical outcomes (clinical efficacy and safety) of using supplemental non-invasive computational ECG and cardiac imaging analysis tools to help guide ablation of ventricular tachycardia.
ASCEND is a randomized controlled open-label pilot study evaluating the safety and effectiveness of pulsed field ablation (PFA) with the novel FARAPOINT catheter compared to the standard radiofrequency (RFA) ablation with FlexAbility SE or ThermoCool ST catheter for ablation of ventricular tachycardia (VT) in the patients with ischemic cardiomyopathy and implantable cardioverter-defibrillator (ICD). The study hypothesis is that the PFA ablation is more efficient compared to the RFA technique but retains a comparable safety profile.
The purpose of this study is to examine the use of a point ablation catheter (Farapoint, Boston Scientific) in the mapping and ablation of focal ventricular arrhythmias (premature ventricular contractions or ventricular tachycardia) using pulsed field energy.
This is a research study that aims to understand if giving a lower dose of treatment all at once is as effective and safe as dividing it into three smaller doses for patients with a heart condition called refractory ventricular tachycardia (VT). These patients have not exhibited positive responses to conventional medications or procedures. This study aims to explore whether an alternative approach could yield more beneficial outcomes.
Sphere-9 VT is a prospective, multi-center, non-randomized, unblinded feasibility study. Adult subjects with recurrent, sustained, monomorphic ventricular tachycardia due to prior myocardial infarction will be enrolled and treated with the Sphere-9 Catheter and Affera Ablation System.
To use programmed ventricular stimulation at the time of AF ablation to define the prevalence and mechanism of inducible ventricular tachycardia (VT); pace-mapping to define the site of origin of ventricular arrhythmias; and voltage mapping to define low voltage scar substrate in the basal LV in patients with pathogenic TTN variants compared to genotype-negative controls.
The goal of this observational study is to determine if electrophysiologic mapping and cardiac MRI can help identify patients that have genetic forms of cardiomyopathy that are at high risk for development of dangerous ventricular arrhythmias. The investigators aim to study: 1. the prevalence and mechanism of inducible ventricular tachycardia 2. pace-mapping to define the site of origin of ventricular arrhythmias 3. voltage mapping to define low voltage scar substrate in the basal LV to determine the risk of development of ventricular arrhythmias in patients with genetic forms of cardiomyopathy. Participants will undergo cardiac MRI before their scheduled procedure and voltage mapping during their scheduled procedure as part of data collection.
Data collection registry for patients with ventricular tachycardia to help physicians give better care for patients clinically and procedurally.
Over the last decade, radiofrequency catheter ablation (RFCA) has become an established treatment for ventricular arrhythmias (VA). Due to the challenging nature of visualizing lesion formation in real time and ensuring an effective transmural lesion, different surrogate measures of lesion quality have been used. The Ablation Index (AI) is a variable incorporating power delivery in its formula and combining it with CF and time in a weighted equation which aims at allowing for a more precise estimation of lesion depth and quality when ablating VAs. AI guidance has previously been shown to improve outcomes in atrial and ventricular ablation in patients with premature ventricular complexes (PVC). However research on outcomes following AI-guidance for VT ablation specifically in patients with structural disease and prior myocardial infarction remains sparse. The investigators aim at conducting the first randomized controlled trial testing for the superiority of an AI-guided approach regarding procedural duration.
Over the last decade, radiofrequency catheter ablation (RFCA) has become an established treatment for ventricular arrhythmias (VA). Due to the challenging nature of visualizing lesion formation in real time and ensuring an effective transmural lesion, different surrogate measures of lesion quality have been used. The Ablation Index (AI) is a variable incorporating power delivery in its formula and combining it with CF and time in a weighted equation which aims at allowing for a more precise estimation of lesion depth and quality when ablating VAs. AI guidance has previously been shown to improve outcomes in atrial and ventricular ablation in patients with premature ventricular complexes (PVC). However research on outcomes following AI-guidance for VT ablation specifically in patients with structural disease and prior myocardial infarction remains sparse. We aim at conducting a prospective observational multicenter registry investigating the efficacy and safety of AI-guided VA ablation in patient with ischemic and non-ischemic cardiomyopathy.
This is a Phase 2, multicenter, double-blind, sponsor unblinded, placebo-controlled, single-dose clinical study of CRD-4730 to evaluate the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of CRD-4730 when administered as single oral doses to participants with Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT). The study will have 2 cohorts in which participants with CPVT will participate in a 3-period, randomized 2-sequence study. Each participant will receive 2 different doses of CRD-4730 and 1 dose of matching placebo, with each study drug administered as a single dose.
This post-approval study (PAS) is designed to provide continued clinical evidence to confirm the long-term safety and effectiveness of the FlexAbilityTM Ablation Catheter, Sensor EnabledTM (FlexAbility SE) for the treatment of ventricular tachycardia in a post-market environment. This is a prospective, single arm, open-label, multi-center, observational study.
RADIATE-VT is a pivotal, multicenter, randomized trial comparing safety and efficacy between cardiac radioablation (CRA) using the Varian CRA System and repeat catheter ablation (CA), for patients with high-risk refractory ventricular tachycardia (VT) who have experienced VT recurrence after CA and are candidates for additional CA.
The goal of this registry database is to demonstrate the safety and effectiveness of functional ventricular tachycardia (VT) ablation using SENSE protocol in patients with ischaemic VT. Mortality and the need for ICD therapies at 12 months post-ablation will be compared with propensity-matched controls undergoing substrate-based ablation alone.
The objective of this clinical study is to evaluate the safety and effectiveness of the Adagio VT Cryoablation System in the ablation treatment of Sustained Monomorphic Ventricular Tachycardia (SMVT)
Vistag SurPoint is a proprietary module that generates a numerical tag index which can be used as multiparametric lesion quality marker to guide ablation in the clinical setting for ablation of atrial arrhythmias. SurPoint tag index has studied to guide ablation of ventricular arrhythmias, such as premature ventricular complexes, but its effectiveness and safety for ablation of Ventricular Tachycardia in patient with Ischemic and Non-Ischemic Cardiomyopathies is not well established. In this single center prospective observation registry, a ventricular ablation strategy utilizing radiofrequency delivery duration cut off determined by a maximum Surpoint index value of 550 will be compared to conventional operator determined duration of radiofrequency delivery based on combination of time (i.e. 30, 60, 90, and 120 seconds), magnitude of impedance drop, attenuation of abnormal electrograms, and achieving non-capture with high-output pacing after ablation. The Surpoint Tag Index Ablation group will be matched with a control group of patients undergoing VT ablation using the conventional time-based radiofrequency strategy and the patients in this group will be selected using propensity matching based on relevant baseline patient and clinical characteristic variables. Primary outcomes of interest: Recurrence of sustained ventricular tachycardia or Internal Cardiac Defibrillator Therapy. Secondary outcomes of interest: Hospitalization for ventricular tachycardia, repeat ablation procedures, all-cause mortality, acute procedural complications, rate of steam pops during ablation procedures Follow up: Up to 24 months after ablation procedure. Follow up will be obtained by office visits and device interrogation reports.
Comparative effectiveness randomized clinical trial, comparing endocardial radiofrequency ablation alone vs radiofrequency ablation combined with venous ethanol in patients with ischemic ventricular tachycardia -Venous Ethanol for Left Ventricular Ischemic Ventricular Tachycardia -VELVET clinical trial
The purpose of this study is to understand why certain hearts have ventricular arrhythmias and help identify areas of the heart that cause arrhythmias. There is still a significant gap in understanding why ventricular arrhythmias occur. This study will examine the electrical properties of the heart tissue to understand how these arrhythmias occur, and hopefully identify areas that might lead to ventricular arrhythmias. The hope is that studying this might be able to improve outcomes during ventricular tachycardia (VT) ablations.
Open label study of transcutaneous magnetic stimulation targeting the stellate ganglion in patients with ventricular tachycardia
The purpose of this study is to evaluate the safety and efficacy of cardiac radioablation (CRA) as a means of noninvasive treatment of ventricular tachycardia (VT) refractory to both medication and catheter ablation.
Background: Patient's freedom from VT after RFA remains non-optimal and it depends on many factors. One of them is the effective reduction of the myocardium with RF energy during the operation. The standardization of the parameters of RF will help to increase the success of the procedure. Hypothesis: Radiofrequency ablation of ventricular tachycardias with high power parameters has comparable safety and leads to greater efficacy (absence of ventricular tachycardias and all types of cardioverter-defibrillator therapies) in the long-term compared with ablation with standard parameters in patients with structural heart disease. Purpose: to evaluate the safety and the efficiency of ablation of ventricular tachycardia in patients with structural heart disease using high power RF energy.
This is a prospective multi-center international registry. The objective of this registry is to collect prospective data on patients undergoing catheter ablation for Ventricular Tachycardia (VT) and Premature Ventricular Contractions (PVC). The registry will be used for clinical monitoring, research, and quality improvement purposes.
This is a prospective multicenter randomized open-label study aiming to assess whether endocardial or endocardial-epicardial ablation is superior to the standard approach (i.e., Antiarrhythmic drugs) in achievement of long-term ventricular tachycardia (VT) treatment success.
Catheter ablation in patients with ventricular tachycardia using a new mapping algorithm called, parallel mapping, that is aimed to increase the specificity of mapping and the outcome of ablation.
The purpose of this study is to evaluate the clinical efficacy and safety of stereotactic ablative radiotherapy (SAbR), also known as stereotactic body radiation therapy (SBRT), for treatment of ventricular tachycardia (VT) requiring implantable cardioverter defibrillator (ICD) treatments in patients with VT refractory to standard invasive ablation techniques. We hypothesized that SAbR is effective in suppressing sustained VT and reducing ICD treatments in this group of patients and is associated with acceptably low risk of serious complications.
The investigators aim to study if patients that undergo catheter ablation for ventricular tachycardia benefit from continuation of Vaughan-Williams class III antiarrhythmic drugs for 3 months after their ablation.
Single arm, phase Ib/2a dose escalation study with an expansion cohort to determine the maximal tolerated dose (MTD) for stereotactic ablative radiotherapy of targets in the cardiac myocardium and to make a preliminary assessment of the efficacy of the treatment. The dose escalation will be guided by Time-to-Event Continual Reassessment Method (TITE-CRM) to ensure more patients will be spared dose limiting toxicities and more patients will be entered on the dose level that will be chosen as minimal dose of maximal effect. This design also allows for continual accrual of patients when delayed adverse events may be observed.
Imaging is to be performed prior to procedure using positron emission tomography/ computed tomography (PET/CT), after a special dye is injected. The scans are going to be merged with other cardiac scans when doing the ablation procedure to correlate anatomy with physiology.
To test the hypothesis that increasing the sinus node rate with atropine treatment prior to exercise will reduce exercise-triggered ventricular ectopy compared to baseline in patients with CPVT.
Phase I/II Study of EP-guided Noninvasive Cardiac Radioablation (ENCORE) for Treatment of Ventricular Tachycardia