The goal of this observational cohort study, which is both retrospective and prospective, is to evaluate the long-term clinical and instrumental response to Cardiac Contractility Modulation (CCM) treatment in adult subjects suffering from symptomatic heart failure (HF) due to systolic left ventricular dysfunction, despite adequate medical therapy. Based on the response to stress echocardiography with preimplantation low-dose Dobutamine, the main questions it aims to answer are: * What is the proportion of subjects who experience a clinical response to CCM therapy at 12 months (NYHA reduction ≥ 1 class)? * There was a reduction in the number of hospitalizations, visits to the Emergency Department, and access to day hospital facilities for more than 4 hours compared to the year before the study (e.g., by intravenous infusion of cardiac inotropic drugs)? * What is the estimated change in the quality-of-life score using the "Quality of Life Questionnaire with Heart Failure - Minnesota" (MLHFQ) between baseline and the end of follow-up? * What is the change in walking distance between baseline and the end of the follow-up in the walk test (6MWT) (optional)? * What is the difference in NT-proBNP levels between baseline and the end of follow-up? Participants are already receiving CCM support as part of their regular medical care for heart failure.
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
New York Heart Association class variation
Timeframe: From enrollment to the end of follow-up, 12 months