View clinical trials related to Tachycardia.
Filter by:This is a randomized, double blind, single center trial to study of the effects of Ivabradine vs. Placebo on patients hospitalized for Stage D heart failure (HF)/ and cardiogenic shock (CS) who will require continuous infusion of Dobutamine and have developed sinus tachycardia (ST) (heart rate >100 beats/min). The aim of the study will be to assess the potential of Ivabradine to slow ST and improve hemodynamics in patients with stage D HF/CS on Dobutamine treatment.
The FAST Trial Registry is a prospective observational cohort study of fetuses with a new diagnosis of atrial flutter (AF) or supraventricular tachycardia (SVT) that is severe enough to consider prenatal treatment (see eligibility criteria below). Aims of the Registry include to establish a large clinical database to determine and compare the efficacy and safety of different prenatal treatment strategies including observation without immediate treatment, transplacental antiarrhythmic fetal treatment and direct fetal treatment from the time of tachycardia diagnosis to death, neonatal hospital discharge or to a maximum of 30 days after birth.
The aim of the study is to develop and validate a novel esophageal mapping system to improve the diagnostics of cardiac arrhythmias. Using a newly designed esophageal ECG catheter, esophageal ECGs (eECGs) will be recorded in 40 patients during an electrophysiological (EP) study and/or ablation procedure and in 12 healthy volunteers. In parallel acquired intracardiac electrograms will serve as reference for the developed mapping systems accuracy. Additionally, the esophageal mapping system will be compared to that of the standard 12-lead surface ECG in regard to its diagnostic performance.
POTS is a relatively common condition that affects millions of patients around the globe. It has an estimated prevalence of 170/100,000 with approximately 80% of patients being women of childbearing age. POTS is characterized by an excessive heart rate increase on assuming an upright posture, either standing or even sitting and leading to disabling palpitations, light-headedness, and even in syncope in severe cases. More than 95% patients with POTS have pronounced cardiovascular deconditioning and show marked exercise intolerance. The severity of POTS is variable. In mild cases the affected patient may continue with routine activities with minimal limitations. Severe form of the disease precludes most normal life activities, such as sitting upright, walking or standing to perform even basic house chores. An estimated 40% of patients with POTS have a resistant form of the condition that is nonresponsive or mildly responsive to all treatments resulting in continued functional limitations in the long term. Many of the currently available treatments in POTS are geared towards increasing blood pressure. These include compression stockings, increased daily fluid intake and increased salt ingestion. Saline infusions may be helpful in certain patients in the short term, though many do not respond. The effectiveness of medications varies greatly, with many patient failing to improve. A small series of clinical patients suffering from severe POTS have shown robust response to weekly albumin therapy, which supports the hypothesis that periodic albumin infusions will provide significant and sustained symptomatic relief to patients with severe POTS. This pilot study will explore the effectiveness of albumin infusions as a treatment for POTS. Eligible patients will receive weekly intravenous infusions of 5% Albumin or Saline in a double blinded fashion for 4 weeks and will crossover to the other infusion for 4 weeks after an intervening 4-week washout period. The participants will be required to maintain a daily diary of their symptoms during the screening, the study and washout periods. Any possible adverse effects as the result of infusions will be documented. Outcome measures will be quantified and validated at the end of each study period and the percentage reduction of tachycardia will be determined at the completion of each study arm.
The implantable device therapy for cardiac arrhythmias has been an established therapy, and one of the common standard procedures in cardiac clinical practice. Pacemakers, implantable cardioverter-defibrillators, and cardiac resynchronization therapy have been developed since 1960s, and the technologies in this field are still progressively developing. Not only these "traditional" implantable devices, there are multiple new devices for cardiac diseases, such as implantable loop recorder, vagal nerve stimulator and barostimulator. The aim of this registry is to demonstrate the efficacy and the safety of standard device implantation procedures and to evaluate/ identify specific factors, including clinical characteristics, laboratory data and procedural data, which predict the prognosis/complication of the patients. These identification will result in further improvement of patients' care.
Paroxysmal supraventricular tachycardia (PSVT) is a sporadic, sudden, and recurring tachycardia that is caused by an altered electrical conductivity in the heart. It causes palpitations and a rapid heart rate, which may induce fear in the patient and negatively impact the patient's quality of life. Therefore, most patients experience not only physical symptoms of PSVT, but also dramatic psychological burdens. As PSVT drug development efforts advance, it has become increasingly important to document the impact of PSVT in a systematic way, in terms of the disease natural history and clinical characteristics of PSVT episodes, as well as the psychological impact of the condition as reported by patients over time. In order to meet the needs for ongoing, systematic data collection on PSVT, a multinational registry, The PSVT Place Registry (www.PSVTPlaceRegistry.com), is being implemented and will be initially comprised of data entered directly by patients. The long-term registry is designed with a participant-focused approach to enable continuity of data collection and minimization of impact from changes of participants' health care providers. The registry may be expanded at a later time to include physician-reported data. The information from the registry is planned to be a resource for participants with PSVT, their families and support networks, their doctors, and the research community to better understand PSVT-related symptoms and awareness, PSVT diagnoses, patient self-management, medical treatments for PSVT, and impact of PSVT on quality of life from the patient perspective.
Single arm, phase Ib/2a dose escalation study with an expansion cohort to determine the maximal tolerated dose (MTD) for stereotactic ablative radiotherapy of targets in the cardiac myocardium and to make a preliminary assessment of the efficacy of the treatment. The dose escalation will be guided by Time-to-Event Continual Reassessment Method (TITE-CRM) to ensure more patients will be spared dose limiting toxicities and more patients will be entered on the dose level that will be chosen as minimal dose of maximal effect. This design also allows for continual accrual of patients when delayed adverse events may be observed.
This study to investigate the effects of RF ablation on left atrial systolic function in patients with atrioventricular nodal reentrant tachycardia (AVNRT) and atrioventricular tachycardia (AVRT).
In the treatment of symptomatic drug resistant persistent atrial fibrillation (Ps AF), catheter ablation has a class IIA indication. During the follow-up, a significant amount of patients (~50%) will experience atrial tachycardias (AT) recurrence. The endpoint of AT ablation during the second procedure has not been validated. At present, several strategies are considered as good clinical practice. Main objective: To evaluate if ablation of all inducible AT post AF ablation (ATPAFA) offers as substantial benefit in comparison with ablation of the clinical ATPAF only during a redo procedure post initial persistent AF ablation. Secondary objectives: To evaluate the prognosis of non-inducibility during a redo procedure for ATPAFA
A multi-center study designed to assess the accuracy of VIVO™ in determining the location of a PVC/VT foci in comparison to an electroanatomical mapping system.