27 Clinical Trials for Various Conditions
In this pilot study the investigators will perform a double-blind randomized trial of intranasal oxytocin on measures of cardiac refractoriness, among individuals who are undergoing clinically indicated catheter ablation procedures for paroxysmal atrial fibrillation. The investigators seek to enroll 20 patients for this study, for the purpose of estimating effect sizes for a larger future study.
This prospective, multicenter, post-market clinical study was designed to evaluate the outcomes of lead extraction of cardiovascular implantable electronic devices (CIED) using Cook catheter and lead extraction devices for any indication it is used in the commercial setting within the United States and Europe. The purpose of this clinical study is to collect data on the performance of the Cook lead extraction devices for the purpose of supporting publications and presentations
This study evaluates whether the addition of tetanizing burst therapy reduces the pain associated with ICD shocks
This prospective, acute, first-in-human, non-significant risk study is intended to evaluate a modified version of the ViewFlex X ICE Catheter, Sensor Enabled (ViewFlex X SE) and ViewMate Multi Ultrasound Console (VMM) ICE data integration with the EnSite X EP System (hereafter referred to as the ViewFlex X ICE System).
Atrial fibrillation is a serious public health issue that affects over 5 million Americans in whom it may cause skipped beats, dizziness, stroke and even death. This study seeks to improve our understanding of the causes of atrial fibrillation and to design new and more effective therapy for this heart rhythm disorder.
The purpose of this study is to evaluate the effectiveness of cardioneuroablation for the treatment of neurocardiogenic syncope (NCS), also known as "vaso-vagal" syncope. Syncope is a general term for passing out spells and neurocardiogenic syncope is a specific form of passing out spells caused by sudden drops in heart rate or blood pressure. Although the specific mechanisms of NCS are not well understood, it is believed that some people are prone to developing passing out spells in specific situations such as standing up for a long period of time, pain or nausea. In these situations, the body reacts with a paradoxical reflex which leads to a drop in blood pressure and heart rate and causes passing out. Certain types of medications are used to treat NCS including beta-blockers, midodrine and florinef, among others. However, none of these medications are particularly effective at preventing passing out spells and many people continue to have episodes despite trying different medications. Cardioneuroablation is a new form of treatment for NCS. The term ablation means using a wire to make small electrical burns in the heart. Ablation has been used for many years to treat other electrical disturbances in the heart but the use of ablation to treat NCS is a new application. The goal of cardioneuroablation is to identify areas within the heart which are believed to initiate the reflex which triggers the drop in heart rate and blood pressure that leads to passing out. In preliminary studies, it has been suggested that cardioneuroablation may be significantly more effective than medications at preventing passing out spells for people with NCS. Hypothesis: Cardioneuroablation of vagal inputs in the left atrium may serve as an effective treatment modality for the prevention of NCS by blunting the initial trigger of the cascade that leads to symptoms and syncope.
The US EPA Clean Air Multiyear research program is moving toward a multi-pollutant approach to the assessment of air pollution in response to recommendations by the NRC 2004 and the BOSC in 2005. Such an approach better reflects the complexity of real-world air pollution problems and parallels evolving scientific and regulatory considerations. Ozone (O3) and diesel exhaust (DE) generally are major and important components of ambient air pollution. This proposed study will address the agency's goals by investigating the cardiopulmonary health effects in healthy human subjects co-exposed to O3 and DE. The findings derived from these exposures will provide NCEA findings for risk assessments of O3 and DE, as well as the Office of Air and Radiation (includes OTAQ and OAQPS) with information relevant to possible modulation of PM-induced health effects and responses by a gaseous co-pollutant for potential standard setting. Additionally the findings will address the fundamental driving principle of the Clean Air Research strategy related to reduction of health due to air pollutant exposures.
One common occurrence following open heart surgery is an irregular rhythm from the top chambers of the heart known as atrial fibrillation (afib or AF). It is known that about 30% of patients who have had bypass surgery without having a heart valve replaced at the same time will develop AF. It is felt that this occurrence leads to factors that will affect a subjects health for the rest of their life. In studying this the investigators will see if post operative afib is an indicator of a person having afib and is not a condition that may only last during the post op recovery period as many physicians feel.The problem in question is, is post operative afib only transient or is it an indicator for more long term episodes of afib that may lead to other health concerns like stroke. Fifty subjects will be asked to participate. There will be to groups of 25 subjects. All subjects will have a device implanted under the skin that will be able to detect all types of heart rhythms. One group will get standard treatment and the physicians will be blinded to the recordings. The other group will be treated by the recording and the information about the amount of time in afib. The purpose of the study is to determine what the true occurrence of afib is for the first year after open heart surgery and to see if knowing this will alter the clinical management of this group of subjects.Currently most subjects are treated without knowing this information and based on that the arrhythmia will no longer happen after the heart is healed or recovered from the surgery. Most medications for controlling the heart rate and rhythm are stopped around 3 months. There is also a tendency to not to use blood thinning medications for the prevention of stroke after this time period. Stroke is one of the major complications from afib. Not all subjects are aware of the irregular heart beats so you can not depend on them to accurately know. They might feel episodes of very fast beating episodes or may become weak and fatigued. Weakness and fatigue are also normal during the first parts of recover from bypass surgery. By documenting the true episodes of afib the investigators can better understand if postoperative afib might need to be treated as a life long issue rather than a transient post operative issue. This treatment might change clinical management and decrease mortality.
The purpose of this study is to evaluate the clinical effect of esmolol treatment on cardiac function and electrophysiology; to assess the effects of esmolol treatment on serum adrenergic and cardiac biomarkers; to explore the safety of esmolol treatment shortly after subarachnoid hemorrhage (SAH). Patients will be followed for a maximum of 1 month after the index SAH. The primary outcome will be change in systolic function - ejection fraction by Simpson's rule (baseline versus Day 7 +/- 2 after SAH).
This study will explore the safety and effectiveness of adding Lovaza® to the therapeutic program utilized internationally for the treatment of individuals with acute coronary syndromes.
This study will test the ability of computer algorithms to predict successful ablation therapy for atrial arrhythmias.
Sudden cardiac death (SCD) remains a major cause of mortality within developed nations despite aggressive efforts to reduce its societal burden. Despite extensive clinical and genetic investigations, a subgroup of cardiac arrests remain unexplained, highlighting the potential contribution of additional cardiac conditions that may not be identified with contemporary diagnostic algorithms. The EPS ARREST study aims to evaluate the role of invasive electrophysiology study within this patient population.
Subjects will be consented to wear the AleriTM sensor prior to, during, and after an Electrophysiology Procedure. During this time, the system will measure the following parameters from subjects: HR, temperature, saline volume/rate, urine production volume, USG, BPO. Data will be retrospectively analyzed to determine if the system effectively operates under these conditions, and can effectively monitor hydration levels of subjects compared to currently available methods.
This study is designed to collect parallel intracardiac signal data during pre-defined periods of clinical interest from the PURE EP system and the existing signal recording and mapping systems. The collected signals will then undergo BLINDED, CONTROLLED evaluation by unbiased electrophysiologist reviewer(s) to determine whether the PURE EP signals provides additional or clearer diagnostic information.
The purpose of the registry is to collect and analyze clinical and laboratory data and tissue samples from patients who are diagnosed with any type of heart disease and to collect the same information and samples from healthy controls in participating Intermountain Healthcare facilities.
This study is being conducted to evaluate the safety and efficacy of weighted blankets to reduce agitation in patients in the post-procedural phase after cardiac catheterization and electrophysiology procedures in the post anesthesia care unit. The study hypothesizes that compared to the traditional and current post-procedural strategy, weighted blanket use will reduce agitation and therefore lessen the need for additional sedation along with a reduction of post-procedure vascular complications.
The primary objective is to evaluate the safety and technical performance of the CathVision ECGenius® System. The secondary objective is to benchmark the intracardiac electrogram signal quality compared to commercially available systems in patients undergoing assessment and ablation of cardiac arrhythmias.
This study will occur in patients undergoing routine cardiac ablation of his/her arrhythmia with planned use of an irrigated ablation catheter. The main objective of this study is to take intracardiac pressure measurements and pressure waveforms with both a "gold standard" balloon tipped pulmonary artery catheter placed for this study and an irrigated ablation catheter placed as standard of care for the procedure.
The purpose of this study is to compare different combinations of anesthetic drugs (cause loss of sensation) in terms of effectiveness, adverse effects, pain relief, and patient comfort for cardiac electrophysiology procedures. In addition, the investigators are studying the different anesthetic combinations to determine the best approach in terms of identification and treatment of arrhythmias.
The purpose of this study is to determine how well the device predicts susceptability to potentially lethal ventricular arrhythmias.
The purpose of this observational registry is to report real-world safety and performance of VeriSight for ultrasound guided ICE imaging in percutaneous cardiac intervention procedures when used in standard clinical practice.
This is a prospective single center Cardiology department observational study. The study aim is to better understand the predictors of high grade conduction abnormalities associated with TAVR such that a more robust evidence-based and universal strategy to manage cardiac conduction disturbances in these patients, which has been elusive, can be developed.
This is a randomized, prospective clinical trial comparing 2 different types of implantable cardioverter defibrillator (ICD) leads in children and patients with congenital heart disease. ICD lead survival in this patient group is particularly suboptimal, and lead extraction is technically difficult and carries a substantial morbidity risk. Recently, improved ICD lead designs have been released and are currently being utilized in patients. The main aim of the study is to determine if either type of lead performs better in terms of implantation electrical characteristics, long-term survival without breaking, and ease of extractability.
Conscious attempts to regulate alcohol use are often undermined by automatic attention and arousal processes activated by alcohol cues, as well as by diminished ability to inhibit in-the-moment behaviors. The current study will examine whether a brief behavioral intervention of slow breathing paced at a resonance frequency of the cardiovascular system can interrupt automatic alcohol cue reactivity and enhance cognitive control in binge drinkers. Results from the proposed study may provide new prevention and intervention targets to interrupt unhealthy drinking behaviors.
Primary Objective: Conduct a prospective, observational pilot study that assesses the frequency and severity of anesthesia charting fidelity weaknesses in three separate clinical environments (Cardiac surgical operating room, cardiac surgical intensive care unit, and electrophysiology laboratory) as assessed by a customized error scoring system that focuses on the magnitude of errors among multiple continuous, categorical and dichotomous variables. The errors are being assessed in order to identify the most common charting inaccuracies so that target areas appropriate for testing of improvement strategies may be isolated.
The ABCD clinical study (ClinicalTrials.gov Identifier NCT00187291) was designed to determine if a T-Wave Alternans (TWA) test is equivalent to an Electrophysiology Study (EPS) in predicting life-threatening heart rhythms in patients with ischemic heart disease, left ventricular dysfunction, and non-sustained tachycardia. The purpose of the ABCD Genetic sub-study is to identify genetic markers that predict TWA status and arrhythmia risk in this same population.
Hypothesis 1 (H1): Epicardial biventricular pacing is a safe and feasible method of pacing in young patients. Over the last two years, physicians at Children's Healthcare of Atlanta have been implanting epicardial BiV pacing systems in children determined to have ventricular dyssynchrony caused by numerous cardiac diagnoses. The decision to use these pacing systems was based on the knowledge gained by adult studies. Since the use of these pacing systems in the pediatric population has not been formally studied, we propose a study to retrospectively review the safety and feasibility of epicardial BiV pacing in pediatric patients. This study will involve the review of the medical records of children who received epicardial BiV systems at Children's Healthcare of Atlanta between January 2002 and May 2004.