Clinical Research Directory

Coffee Use, Physical Activity and Symptomatic Ventricular Arrhythmias in Patients With Left Ventricular Dysfunction and an ICD

The goal of this observational study is to learn whether caffeine consumption is associated with ventricular arrhythmias and physical activity in adults with heart failure, reduced left ventricular ejection fraction, and an implantable cardioverter-defibrillator (ICD). The main questions it aims to answer are: Is caffeine consumption associated with the burden of premature ventricular contractions (PVCs)? Is caffeine consumption associated with the occurrence of ventricular arrhythmias, including non-sustained ventricular tachycardia (NSVT), sustained monomorphic ventricular tachycardia (SMVT), and ventricular fibrillation (VF)? Is caffeine consumption associated with the level of daily physical activity recorded by the ICD? Participants will: Complete a one-time questionnaire about their consumption of coffee and other caffeine-containing products during the previous 7 days. Allow researchers to collect relevant information from their medical records. Allow researchers to use data already collected during the routine follow-up of their ICD, including information on heart rhythm abnormalities, heart rate, and physical activity. No additional hospital visits, medical examinations, blood tests, or changes to treatment are required as part of this study.

Clinical Trial to Evaluate the Efficacy and Safety in Concomitant Administration of Macitentan and Dapagliflozin in Patients With Heart Failure With Mildly Reduced and Preserved Ejection Fraction (HFmrEF and HFpEF) and Combined Pre- and Post-capillary Pulmonary Hypertension (CpcPH)

This clinical trial will evaluate whether combination therapy with Dapagliflozin + Macitentan improves outcomes compared to Dapagliflozin + placebo in patients with combined pre- and post-capillary pulmonary hypertension (CpcPH). The study will measure changes in pulmonary vascular resistance, NT-proBNP, 6-minute walk distance, and quality of life (KCCQ scores) over 24 weeks. Participants will be randomly assigned to one of two groups, take study medication for 24 weeks, and undergo regular clinical, laboratory, and safety assessments.

US Benchmarking Clinical Study

The goal of this observational study is to measure shear wave velocity (SWV) in patients with non-reduced left ventricular ejection fraction (LVEF) heart failure and left ventricular hypertrophy, with or without transthyretin amyloidosis with cardiomyopathy (ATTR-CM), and in control subjects without heart failure or cardiomyopathy. The main question it aims to answer is: • Can SWV be used to measure myocardial and liver stiffness in the study's target populations? Researchers will compare patients with ATTR-CM, patients without ATTR-CM, and a control group to determine the distributions of SWV in each population. Participants will: * Have a standard cardiology assessment, including a physical exam, blood work, and an echocardiogram. * Undergo an investigational assessment with the eMyosound LYRA device to measure SWV in their myocardium and liver. * Have the investigational assessment repeated by a second observer to assess measurement reliability.