View clinical trials related to Arrhythmias, Cardiac.
Filter by:Brief Summary : Rhythm disorders are a frequent and potentially serious complication of critical patients in the ICU and postoperative cardiac surgery. In particular, atrial fibrillation (AF) is the most common rhythm disorder in patients admitted to the ICU and is associated with excess mortality during acute circulatory failure. In postoperative cardiac surgery, AF affects 15 to 45% of patients. In addition to hemodynamic effects, AF increases the risk of stroke, bleeding, respiratory or renal failure, and doubles mortality at 30 days and 6 months. In the longer term, the recurrence rate of AF within 1 year after hospital discharge is about 50%. Similarly, other rhythm disorders, supraventricular or ventricular, can be life-threatening in ICU patients. While the incidence and complications of rhythm disorders are well documented during sepsis, cardiogenic shock or after cardiac surgery, there are to our knowledge no data on the frequency and complications of rhythm disorders in patients assisted by VA ECMO. The primary objective is to describe the incidence of supraventricular rhythm disorders in patients assisted by VA ECMO.
Noninvasive evaluation of the electrical status of the heart is based on the standard ECG but remains suboptimal due to difficulties with arrhythmia characterization and location. Electrocardiographic Imaging (ECGI) provides maps of cardiac electrical excitation in relation to the anatomy of the heart using an extensive number of electrodes from the body surface. The applicant will develop a systematic evaluation of the ECGI as a tool to detect cardiac regions of interest in cardiac arrhythmias.
Evaluation of an innovative smart t-shirt capable to monitor ECG signal and related parameters through the comparison with a Holter ECG and a smartwatch
This study will verify the 1-channel patch-type ECG's arrhythmia diagnostic concordance rate and electrocardiogram measurement performance in pediatric patients by collecting ECG signals from patch-type ECG and Holter device simultaneously for data analysis.
This study will verify the 1-channel patch-type ECG's arrhythmia diagnostic concordance rate and electrocardiogram measurement performance by collecting ECG signals from patch-type ECG and Holter device simultaneously for data analysis.
Background: Bruton s tyrosine kinase inhibitors (BTKi) are used to treat a form of leukemia. But taking BTKi can also increase a person s risk of developing an abnormal heart rhythm. This can cause sudden death. In this natural history study, researchers want to learn how BTKi affects the heart. Objective: To identify and monitor the effects of BTKi on the heart. Eligibility: People aged 18 and older currently receiving or planning to receive BTKi or venetoclax. Design: Participants who have not yet started BTKi will have 2 required clinic visits: 1 before they start taking BTKi, and 1 about 6 months later. Participants who are already taking BTKi will have 1 required visit. Participants will undergo multiple tests: A physical exam, including collection of blood and saliva. A test that measures heart activity via stickers placed on the chest. A test that uses sound waves to capture images of the heart. An exercise stress test that monitors heart activity and blood pressure while the participant works on a treadmill or stationary bike. Sound wave images of the heart may also be taken while the participant exercises. Stress magnetic resonance imaging (MRI) may be done in place of an exercise test. Participants will lie on a table that slides into a tube. They will be given drugs to stress the heart while images are taken. Participants may wear a device to monitor their heart at home. Participants may have repeat visits if they develop heart symptoms or if they need to stop taking BTKi. They will have follow-up phone calls each year for up to 3 years.
The purpose of this clinical study is to collect data simultaneously with the CS6BP watch sensors during EPS in order to characterize different evoked arrhythmias and record Blood Pressure during the procedures that blood pressure is collected by an automated cuff.
Ventricular tachycardia (VT) and ventricular fibrillation (VF) are life-threatening conditions that increase in frequency over the years. An electrical storm (ES) is defined as the occurrence of 3 or more continuous ventricular arrhythmia. The sympathetic nervous system has an important role in VA and is the target of treatment. Studies show that stellate ganglion blockade (SGB) can reduce cardiac sympathetic tone and is an alternative bridge therapy in VAs. In our study, the investigators preferred to apply a combination of local anesthetic and steroid in the stellate ganglion blocking method to 10 VA patients who were resistant to medical treatment and had an ICD, and we also planned to examine the 6-month follow-up results of the patients. In our study, USG-guided left stellate ganglion blockade was applied to 10 VA and ES patients with ICD. The 6-month results of the patients were evaluated retrospectively. For blockage, the solution was prepared by adding 8 mg dexamethasone, 40 mg lidocaine, and 10 mg bupivacaine to 10 mL with physiological saline. The success of the procedure was evaluated with the development of Horner's syndrome in the left eye.
Treatment of ventricular arrhythmias (VA) originating at the base of the heart may be challenging. Unipolar radio-frequency (RF) ablation is a standard approach to treat VA, however, it fails in 10 to 75% of patients, depending on the localization of VA. The main reason for unipolar ablation failure is the intramural location of the source of VA. In such patients, bipolar ablation may occur effective. However, there are no prospective studies or registries on consecutive patients wilt failed unipolar ablation, therefore, the proportion of candidates for bipolar ablation after failed unipolar approach is not known. Also, invasive electrophysiological parameters associated with successful unipolar and bipolar ablation have not been well established. It has been hypothesised that (1) bipolar ablation fails in 12-75% (mean 30%) of consecutive patients and these patients are candidates for bipolar ablation, (2) local ventricular signal precocity > 20 ms, unipolar signal without R wave and pace mapping 12/12 predict effective unipolar ablation but not bipolar ablation, (3) morphology of VA from surface ECG can identify patients with possible intramural localization, and (4) successful ablation results in improvement of quality of life (QoL). Aims: 1. To assess how many patients after failed unipolar ablation need redo procedure with bipolar ablation (primary end-point) 2. To assess which intraprocedural electrophysiological parameters predict success during standard unipolar ablation (secondary endpoint) 3. To assess short term efficacy of bipolar ablation (secondary endpoint) 4. To assess one-month efficacy of bipolar ablation (secondary endpoint) 5. To assess which intraprocedural electrophysiological parameters predict success during redo bipolar ablation (secondary endpoint) 6. To evaluate the performance of ECG-based algorithms in predicting the localization / origin of VA, especially of transmural origin (secondary endpoint) 7. To assess the effects of ablation on QoL (secondary endpoint)Methods. The study group consists of all consecutive patients who underwent unipolar ablation of VA originating from the base of the heart in the Grochowski Hospital and collaborating centres. All these patients are referred to Grochowski Hospital for further follow-up and treatment if needed, including bipolar ablation if initial unipolar approach failed. In all patients acute and one-month efficacy of unipolar and bipolar ablation is assessed.
The Impulse Dynamics Optimizer Device is a Food and Drug Administration (FDA) approved; commercially available device indicated for patients with heart failure with reduced ejection fraction (HFrEF). Many candidates of this device have a previously implanted cardiovascular implantable electronic device (CIED)- internal cardioverter defibrillator (ICD) or permanent pacemaker (PM). Patients with heart failure are at high risk for both atrial and ventricular cardiac arrhythmias. The aim of this study is to evaluate patients for Atrial fibrillation (AF) burden episode data obtained from interrogation of their CIED 8 months or greater after Optimizer implant and compare arrhythmia burden 6 months before Optimizer Cardiac Contractility Modulation (CCM) device insertion to 8 months or greater after Optimizer insertion (after 2 month blanking period).