View clinical trials related to Arrhythmias.
Filter by:This is a prospective, single center, non-randomized study to evaluate the arrhythmia monitoring performance of the AVIVO™ System in a hospital setting.
Prospective, multicenter, non-randomized study to determine the performance of NUVANT Mobile Cardiac Telemetry system in arrhythmia detection.
This is a prospective, single center, non-randomized study to evaluate the arrhythmia detection performance during ventricular events.
This is an open-label, multi-center, long-term, (open-ended) safety study with 125 mg per day of azimilide in patients who completed protocol 2000098.
Prospective, randomized double-blinded study to investigate hemodynamic changes in valvular cardiac patients during dental treatment with the use of a local anesthesia containing epinephrine.
T-wave alternans is a test that is currently being used to risk stratify patients with structural heart disease for sudden cardiac death. The mechanism of T-wave alternans is unclear, but may share a common abnormality with conditions of cardiac fluid overload such as heart failure, which is altered intracellular calcium handling. Current Medtronic implantable defibrillators have the capability of monitoring cardiac fluid status via transthoracic impedance measurements. The purpose of this study is to determine if a correlation exists between T-wave alternans status and cardiac volume status, as determined by transthoracic impedance measurements. Secondarily, the study seeks to examine the relationship between arrhythmia frequency and T-wave alternans or cardiac volume status.
T-wave alternans is an electrocardiographic finding that has been shown to predict the occurrence of future cardiac arrhythmias in patients who have had a heart attack. What is unknown about T-wave alternans testing is when is the best time to perform the test. In most studies, T-wave alternans testing is conducted 4 weeks or more after a heart attack. It is unknown if T-wave alternans testing performed prior to hospital discharge in heart attack patients is reliable. The objective of this project is to determine the diagnostic accuracy of T-wave alternans testing performed prior to hospital discharge and again at 30 days after hospital discharge in patients who have suffered a heart attack.
The purpose of the proposed pilot study is to identify factors which are associated with periods of high ventricular arrhythmia burden. This will be performed by analysis of gene expression from peripheral blood samples.