Active clinical trials for "Arrhythmias, Cardiac"

The purpose of this study is to assess efficacy of prolonged Full Disclosure ECG monitoring and signal analysis using advanced GSM telemetric technology to prescribe the most appropriate treatment of arrhythmia.

Postoperative arrhythmias (heart irregularities) are one of the most common complications after cardiac surgery and are associated with increased morbidity and mortality. Preoperative depression may be an important co-factor in the generation of postoperative arrhythmias due to sympathetic hyperactivity evident in patients with depression. Objectives: To determine the effect of preoperative depression on postoperative arrhythmia in patients undergoing elective coronary artery bypass graft (CABG) surgery. Prospective observational study, 120 patients undergoing elective CABG surgery ECG will be preformed preoperatively on all patients. All patients will be assessed for signs of depression using the Prime MD Patient Health Questionnaire (Prime MD PHQ) one week before surgery and 6 weeks postoperatively.Based on the Prime MD PHQ results, patients will be divided into two groups: those with or without signs of depression. Heart rate and rhythm monitoring with Holter will be performed for 3 days postoperatively in order to compare the incidence of postoperative arrhythmias between groups. The primary outcome is the number of patients with and without depression suffering from ventricular and/or supraventricular arrhythmias. Secondary outcomes include all cause mortality, non-fatal myocardial infarction, cardiac arrest, and congestive heart failure. CABG surgery is the most common operative procedure in North America and arrhythmias are one of the most common postoperative complication. It is estimated that about a third of these cardiac patients suffer from preoperative depression and therefore may be exposed to a higher risk of perioperative morbidity and mortality. If an association between preoperative depression and postoperative arrhythmia is found, treatment modalities may be indicated to reduce the prevalence of perioperative arrhythmia in patients with preoperative depression undergoing cardiac surgery.

Safety and efficacy in radiofrequency (RF) or cryoballoon atrial fibrillation (AF) ablation will be investigated in a cohort study design in experienced electrophysiologic (EP) centers analyzing propensity-matched cohorts.

Atrial fibrillation (AF) is the most prevalent heart rhythm disorder in the United States, affecting 2.5 million individuals in whom it may cause stroke, palpitations, heart failure, and even death. Unfortunately, therapy for AF is limited. Anti-arrhythmic or rate-controlling drugs are poorly tolerated, with frequent side effects and do not reduce stroke risk. Ablation is an emerging, minimally invasive therapy that has attracted considerable attention because it may eliminate AF. Unfortunately, AF ablation is technically challenging, with a success of only 50-70% (versus >90% for other arrhythmias) and serious risks. A major cause of these limitations is that the mechanisms for human AF are not known and thus ablation cannot be directed to them. As a result, AF ablation is empiric and results in extensive destruction of the atrium. This project will perform research to better understand AF and determine if abnormal activity in small regions or more widespread regions of the heart cause AF. By performing these studies in patients during clinical procedures, this project may lead to a paradigm shift in the understanding and treatment of AF.

Risk prediction in in inherited heart rhythm conditions that may cause sudden cardiac arrest or death is difficult. Sometimes the risks may be low but the loss of life in an otherwise healthy young individual is catastrophic. Clinicians often treat to the extreme to prevent this and so often those at unknown risk for a serious cardiac event are treated with an implanted cardioverter defibrillator (ICD) to protect against sudden death even though the risk is low or unknown. ICDs them selves are not without adverse events such as needing battery replacements, mechanical complications, inappropriate shocks and body image and self esteem issues for the patient. This study will use an inject able monitor that is less invasive to monitor inherited heart rhythm patients long term to help gather long term heart rhythm data (3 years) on patients with an inherited heart rhythm that will help to detect symptoms of dangerous heart rhythms so that the appropriate care can be provided.

This study aimed to analyze the usefulness of telecardiology in the primary health care level using an ECG personal sensor developed in Slovenia.Investigators also wanted to evaluate the satisfaction of patients and their physicians and the cost-effectiveness of this tool.

The aim of our study is to examine the effect of social isolation on physical activity level, health literacy and kinesophobia in heart rhythm disorders.

Alternating Hemiplegia of Childhood (AHC) is a rare and severe disease that is in need of effective, and hopefully even curative, therapies. Afflicted patients suffer from severe paralyzing crises, often excruciatingly painful muscle spasms, severe often life threatening epileptic seizures, frequently severe developmental and psychiatric/psychological disabilities and other comorbidities, such as cardiac disturbances. Recent data indicate that AHC genotype is in relation to cardiac repolarization troubles and to cardiac arrhythmias. The primary hypothesis to explore is that there is an association between genotype and cardiac phenotype in AHC.

The investigators hypothesise that following episodes of hypoglycemia, rebound hyperglycemia may result in a prolonged period of increased QTc and, thereby, increased susceptibility to serious cardiac arrhythmias in patients with type - 1 diabetes.

Atrial fibrillation (AF) is more common in patients with renal disease compared to the general population an risk increase to as much as 10 times in patients on hemodialysis (HD). Stroke is an important cause of morbidity, mortality and suffering for patients with end-stage chronic kidney disease (ESCKD) on hemodialysis.The risk of bleeding in these patients can be roughly 5-fold higher that without it. Current guidelines recommend the use of oral anticoagulants (AO) to prevent stroke or systemic thromboembolism in high-risk patients with AF. Left atrial appendage occlusion (LAAO) reduces the risk of bleeding while allows thromboembolic stroke prevention. The aim of the study is to assess the procedural safety on stroke and bleeding prevention of LAAC in patients with non-valvular atrial fibrillation (NVAF) and ESCKD on HD.