About this trial
This prospective, single-center post-market-follow-up study aims to fill knowledge gaps by combining advanced cardiac MRI/MRS with systemic mitochondrial assays and exercise testing to characterize the energetic and functional impact of IASD therapy in HFrEF patients.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Ischemic or non-ischemic cardiomyopathy with LVEF ≤ 40%
Patient is eligible and scheduled to receive the Ventura IASD as per the current IFU.
Symptoms: NYHA Class III
Stability: Chronic heart failure for ≥ 6 months on stable, and at least 3 months on guideline-directed medical therapy (GDMT)
Disqualifiers
Hemodynamics: Resting SBP < 90 or > 160 mmHg
Severe PH (PASP >70 mmHg, PVR > 4 Wood Units)
intracardiac thrombus
Severe RV dysfunction (TAPSE <12 mm or RVFAC ≤25%)
Trial design
Single group
Treatments tested in this trial
cardiac MRI
Other interventionCardiac Imaging: Multiparametric cardiac MRI (cMRI) and Phosphorus-31 Magnetic Resonance Spectroscopy (³¹P-MRS) at rest and during cycle ergometry to evaluate ventricular volumes, pressures, and myocardial energy efficiency
Functional Testing
Other interventionCardiopulmonary exercise testing (CPET) to quantify functional capacity via VO2 max and standardized symptom assessment in the heart failure unit.
Treatment groups
Trial outcomes
Primary outcomes
Reverse LV remodeling
The primary endpoint is to achieve reverse remodeling detected by gold standard cMRI, comparing left-ventricular end-diastolic volume (LVEDV).
Secondary outcomes
Myocardial Energy metabolism
Improvement in myocardial energy metabolism at rest and during exercise, measured as an increase in the myocardial PCr/ATP ratio after Ventura IASD implantation determined by 31P-MRS
Sponsors and contacts
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