Active clinical trials for "Heart and Blood Diseases"

The purpose of this study is to characterize the safety, tolerability, efficacy, pharmacokinetics (PK), and pharmacodynamics (PD) of MYK-224 in participants with obstructive Hypertrophic Cardiomyopathy (oHCM)

The main aims of this study are to test for any side effects from modakafusp alfa in combination therapy and to determine the recommended dose of combination therapy with modakafusp. The dose of modakafusp alfa will be increased a little at a time until the highest dose that does not cause harmful side effects is found. Participants will be given modakafusp alfa through a vein.

Background Cardiac Resynchronization Therapy (CRT) is proven to improve survival and heart function of patient with certain electrical conduction abnormality and heart failure. However, in patient with certain electrical conduction abnormality, being nonresponder is observed in up to 40% in patient receiving CRT. Conventionally the surgical approach of CRT is to implant one pacing lead in the right heart and one in the left heart to resynchronize the contraction and the pacing lead in the left heart is usually placed in the posterior or lateral portion of the left heart. However, this single approach may not be optimal, especially for those patients with conduction abnormality known to have no response to CRT. Purpose of the clinical investigation The purpose of the Activation Pattern and Acute Hemodynamics of His and Left Bundle Pacing is to study the acute effect on the heart function and conduction abnormality of His and left bundle pacing in conventional CRT candidate. During CRT implantation, Hisbundle lead and Left bundle pacing lead will be placed and the acute effect on heart function will be studied by a wire placed in the left ventricle of the heart and the activation pattern will be studied by a noninvasive global mapping system. The pacing approach that optimally corrects conduction abnormality and improvement on the heart function acutely will be determined

Current guidelines for the cardioversion of paroxysmal Atrial Fibrillation at the Emergency Department do not prioritize between antiarrhythmic agents and do not consider the time taken for successful cardioversion. Furthermore, the use of flecainide -a class 1C antiarrhythmic agent- is contraindicated for the cardioversion of patients with revascularized coronary artery disease, as well as patients with ischemic cardiomyopathy and preserved ejection fraction. These recommendations stem from insufficient data, mainly from the CAST study. The present study is a prospective, multicentre, randomized clinical trial. The primary goals of this clinical trial are to prove the superiority of flecainide over amiodarone in the successful cardioversion of paroxysmal atrial fibrillation at the Emergency Department, and to prove that the safety of flecainide is non-inferior to amiodarone, in patients with coronary artery disease without residual ischemia and ejection fraction over 35%. The secondary goals of the study are to prove the superiority of flecainide over amiodarone in the reduction of hospitalizations from the Emergency Department due to atrial fibrillation, in the time taken to achieve cardioversion, and to the reduction of the need to conduct electrical cardioversion. The study population will be all consecutive new-comers to the Emergency Department with primary diagnosis of paroxysmal atrial fibrillation and history of coronary artery disease without angina, without residual ischemia and with ejection fraction > 35%. The sample size will be 200 patients, who will be monitored for 30 days. At the Emergency Department, all patients will be under continuous ECG monitoring, and a 24-hour ECG device will also be placed (Holter). The patients will be randomized to the treatment group (flecainide) and the control group (amiodarone). Patients in both arms will stay at the ED for a total of 6 hours after therapy initiation. If no adverse events occur in this time, the patient will be discharged from the ED. Otherwise, the patient will be admitted to the hospital. At 24 hours, the patients will visit the study centre for physical examination, ECG, cardiac ultrasound, 24-hour ECG removal and adverse events evaluation. At 30 days, follow-up via phone calls will be conducted for the evaluation of the study outcomes and adverse events.

The purpose of this study is to evaluate the long term off-Antiarrhythmic Drug (AAD) effectiveness of Biosense Webster, Inc. Irreversible Electroporation (BWI IRE) system in treatment of participants with symptomatic drug refractory paroxysmal atrial fibrillation (PAF).

The primary objective of this study is to compare the effect of treatment with olpasiran, to placebo, on the risk for coronary heart disease death (CHD death), myocardial infarction, or urgent coronary revascularization in participants with atherosclerotic cardiovascular disease (ASCVD) and elevated Lipoprotein(a).

The Investigators will enroll patients who have had a stroke and are experiencing post-stroke pain secondary to their infarct and disruption of the sensory system in a research study to compare the effectiveness of Scrambler Therapy to traditional pharmacologic therapies.

The Super Rehab: Can we Achieve Coronary Artery Disease Regression? (a feasibility study) proposes to test the use of a novel lifestyle intervention (Super Rehab), in addition to standard care, for patients with both coronary artery disease and metabolic syndrome. This is a feasibility study that will test study processes, enable optimisation of the intervention and provide data for power calculations to enable design of pivotal trials of the clinical effectiveness of Super Rehab.

This study proposes that the addition of statins reduces the treatment delays or early discontinuations secondary to cardiotoxicity in patients with Stage I-III HER2 positive breast being treated with anti-HER2 therapy.

Central retinal artery occlusion (CRAO) is an ophthalmic emergency which leads to devastating visual function defects and poor prognosis. Though traditional conservative treatments are widely used, none of them is proved to be effective. A number of meta-analyses and observational studies indicate intravenous thrombolysis to be beneficial in CRAO. Selective intra-arterial thrombolysis (IAT) introducing rt-PA directly into the ophthalmic circulation by super-selective microcatheterization may reduce the complications such as intracranial and systemic hemorrhage.The residual visual field is significant for patients with CRAO who have poor central visual acuity. Thus, it is clinically significant to study the changes in visual fields in eyes with CRAO.