View clinical trials related to Arrhythmia, Sinus.
Filter by:The goal of this clinical trial is to test a new type of pacemaker in heart failure patients following a heart bypass operation. The new pacemaker restores respiratory sinus arrhythmia which is a natural pattern where the heart rate increases when the participants breathe in and slows down when participants breathe out. The main questions the trial aims to answer are: - Is the new type of pacemaker safe? - Does the new type of pacemaker improve how patients' hearts work (also known as cardiac output)? Participants will have a range of tests before their operation and during their recovery in hospital while participants have the new type of pacemaker in place, and will be monitored very closely. Participants will also receive a phone call 1 month after their surgery. Researchers will compare the new type of heart pacing against standard treatment to see if it is as safe, and if it is any better for patients.
This study will evaluate whether the intervention, Mom Power, improves the self-regulation of mothers with a history of trauma and their children. The central hypothesis is that the intervention will shift behavioral and physiological self-regulation in mothers, children, and dyads to mitigate psychopathology risk.
Trauma-related nightmares in Veterans are associated with poor clinical outcomes, greater substance use, and increased risk of suicide. In spite of an urgent need to reduce the burden of trauma-related nightmares, the underlying physiological changes associated with them are poorly understood, and there are no clear evidence-based recommendations for their treatment. Limitations of current assessment procedures represent a barrier to improved care. In-laboratory sleep studies rarely capture nightmares, limiting the knowledge about them and their response to treatment. This study addresses these limitations by using extended, in-home sleep monitoring to capture sleep data associated with nightmare reports in Veterans, and assessing how these features are altered throughout a cognitive-behavioral nightmare treatment. Results from this study will increase understanding of trauma-related nightmares, and advance strategies for personalizing symptom management for Veterans.
To examine the effects of heart rate reduction on exercise capacity in control subjects and patients with chronic heart failure.
The application scenario is shown in the figure below: the user utilizes an ECG-based wireless sensor (WiBoC Chipset), and transmit those signals to a mobile-phone device that has an embedded expert system integrated. With the aid of 3G system, a remote healthcare monitoring center receives those uploaded signals and stores into the application server. According to the events from this server, the people on service responses to the emergency and takes the corresponding process.
Background: Sinus node dysfunction is a major cause of bradycardia necessitating pacemaker implantation. Evidences of genetic study supported that some genes involved in the pacemaker current or renin-angiotensin system were related to sinus node dysfunction. However, the influence of gene polymorphisms on sinus node dysfunction was not well studied. Methods: A group of 100 patients with documented sinus node dysfunction and 100 age- and sex- matched healthy control patients will be enrolled into this study. Gene polymorphism study includes the angiotensin-I converting enzyme gene, angiotensin II type 1 receptor gene, HCN1-4, SCN5A, KCNE and other possible gene polymorphisms which are related to sinus node function based on previous reports. Genetic polymorphisms are identified with polymerase chain reaction-based restriction analysis. Comparison of multiple haplotype analysis and single-locus analysis will be analyzed between the cases and controls. Estimated Results: Some genetic polymorphisms of these genes which are related to sinus node function or rennin-angiotensin system will show association with sinus node dysfunction. In multilocus haplotype analysis, some genetic haplotype profiles may demonstrate significant difference between cases and controls. In single locus analysis, some genetic polymorphisms may be associated with sinus node dysfunction. Estimated Conclusion and Clinical Implication: This study will demonstrate the genetic polymorphisms in RAS genes or some other genes associated with sinus node dysfunction. These results will support the roles of these genetic polymorphisms in determining the risk of sinus node dysfunction among the Chinese population in Taiwan.
This study is a long-term, prospective, and controlled evaluation of the incidence of persistent atrial fibrillation (AF) in patients with severe intra-right atrial conduction delay paced with preventive algorithms at the interatrial septum (IAS) versus right atrial appendage (RAA).
Right ventricular apical pacing in patients treated with a pacemaker is unnecessary in cases where patients have stable atrioventricular (AV)-conduction. Recent findings demonstrate that pacing even might have unfavourable effects, especially if patients suffer from additional cardiac diseases such as heart failure. The Search AV+ algorithm was designed to avoid ventricular pacing and support intrinsic AV-conduction in order to avoid possible detrimental effects of right ventricular apical pacing. The goal of the EnTRINSIC study is to assess the amount of ventricular stimulation, the amount of hospitalizations, the occurrence of atrial fibrillation and the usage of drugs in patients treated with pacemakers with an activated Search AV+ algorithm versus patients treated with an individual optimization of the pacemaker settings to minimize the amount of right ventricular pacing.
To determine if digitalis had a beneficial, harmful, or no effect on total mortality in patients with clinical heart failure and sinus rhythm.