Active clinical trials for "Arrhythmias, Cardiac"

In this study, the investigators evaluated the association between various measures of adiposity [BMI and waist circumference (WC)] and clinical outcomes in Asian patients who underwent pacemaker insertion, using a nationwide population based cohort.

Myocarditis is an inflammatory disease of the heart muscle which is mostly caused by viruses, bacteria, parasites, toxic substances/drugs or by primary autoimmune mechanisms. Signs of heart failure (dyspnea, reduced resilience, tendency to edema), thoracic pain, palpitations / arrhythmias / syncope, as well as (potentially) lethal clinical conditions in the sense of a cardiogenic shock or sudden cardiac death can be found. In 2015, the European Society of Cardiology (ESC) gave a IIa recommendation for the indication of an ICD vest restoration as "bridging" until the acute phase subsides (possibly normalisation of the left ventricular pump function with reduced probability of malignant cardiac arrhythmia) or until ICD implantation in cases of severe LV dysfunction and/or ventricular electrical instability. The Monitoring and analysis of malignant cardiac arrhythmias are therefore crucial in the treatment of acute myocarditis. The aim of this study is to observe the long-term incidence of ventricular arrhythmias in patients diagnosed with myocarditis and to analyze the MRI and echocardiographic data obtained as potential predictive factors for the occurrence of ventricular arrhythmias.

AcQMap Registry is an observational study

This is an observational, prospective, multi-center registry ,aiming at building a risk stratification for malignant structural ventricular arrhythmias. 2000 participants will be recruited from 10 centers in China,with clinical data to be abstracted from medical records ,and blood samples to be collected for finding promising risk indicators.The follow-up should be made every 6 mouths.

A prospective cohort study to evaluate the association between various triggers encountered in daily life and induction of atrial arrhythmias (atrial fibrillation, atrial flutter, atrial tachycardia and premature atrial contractions) with the use of long-term monitoring devices. The collected data of personalized triggers and risk factors will be used to define the individual phenotype of atrial arrhythmia.

The purpose of this study is to describe the Huawei'ssoftware ("Arrhythmia Analysis Software") for the detection of atrial fibrillation, premature beats, and sinus rhythm using photoplethysmography (PPG). Data derived from a wearable device with a PPG sensor (watch or band) in patients with light skin or dark skin tones will be used as an index test. The Huawei software is intended as a pre-screening technology. It should identify candidates who may benefit from further evaluation. The software is not intended to be a diagnostic system.

There is some limited evidence that reduced size of electrical complexes/traces of the heart on the electrocardiogram (ECG) may be associated with scarring in the heart muscle, which may predispose to serious life-threatening electrical abnormalities and sudden cardiac death (SCD). There is no current guidance on how young individuals and athletes with reduced ECG traces should be managed. Therefore, correct interpretation of this ECG finding is crucial for identifying athletes with disease and at risk of SCD. Some athletes experience SCD despite normal standard cardiac tests. The investigators, therefore, propose to study young healthy individuals and young athletes using cardiovascular MRI, cardiopulmonary exercise testing, 24 hour ECG monitoring and genetic analysis to determine the significance of reduced ECG traces and possibly revise current international sports recommendations.

Electrocardiography is one of most basic laboratory tests in cardiology. Novel mobile ECG are becoming popular. The investigators aim to compare typical electrocardiographic measurements obtained with mobile ECG devices (Alivecor Kardia and Alivecor Cardia 6L) and 12-leads standard ECG (gold standard). The recordings will be compared by cardiologist paying special attention to heart rhythm disturbances, components of ECG curve and quality of recording.

The study is a prospective multicenter registry. Consecutive patients with indications of implant / replacement or upgrade of implantable cardioverter defibrillator (ICD) will be enrolled. The primary objective of the study is to determine the predictors of appropriate anti-tachycardia therapy (with shock) in a non-selected population of patients implanted with an ICD. Secondary objectives of the study are: the incidence of anti-tachycardia therapies; the predictors of inappropriate therapy and onset of arrhythmia burden; the adherence to the current guidelines in the Italian clinical practice; the predictors of heart failure (HF) onset and response to cardiac resynchronization therapy (CRT).

The study is to evaluate the performance of the PulseAI neural network technology at interpreting ECG data recorded using a single-lead Smartwatch (Apple Watch).