Ventricular Sling for Heart Failure With Reduced Ejection Fraction

Inclusion Criteria: Patients with symptomatic heart failure with reduced ejection fraction and either ischemic or non-ischemic cardiomyopathies, referred for CABG surgery. Suitability for the ventricular sling procedure is determined by the surgeon and or cardiologist, using some or all the criteria described below: * Left ventricular end diastolic diameter is greater than or equal to 55mm. * Ejection fraction ≥20% and ≤40% * FMR grade ≤ 2+ (≤ mild FMR) as defined by the guidelines of the American society of echocardiography at the time of the study approval (via a transthoracic or transesophageal echo). * End-systolic Interpapillary muscle distance ≥ 20mm * Cardiomyopathy of ischemic or non-ischemic origins. * Able to sign informed consent and release of medical information forms, or able to assign a legal representative who can sign on the patient's behalf. Exclusion Criteria: * Any evidence of structural (chordal or leaflet) mitral lesions. * Planned concomitant intra-operative procedures (except for closure of patent foramen ovale or atrial septal defect or coronary revascularization) * Planned concomitant intra-operative Maze procedure for symptomatic paroxysmal atrial fibrillation. * Persistent atrial fibrillation * Prior mitral valve repair * Contraindication for cardiopulmonary bypass * Clinical signs of cardiogenic shock * ST segment elevation myocardial infarction within 14 days prior to inclusion in this study. * Congenital heart disease (except PFO or ASD) * Chronic renal insufficiency defined by Creatinine ≥ 3.0 or chronic renal replacement therapy, who are contraindicated for cardiac surgery * Recent history of psychiatric disease that is likely to impair compliance with the study protocol, in the judgement of the investigator * Pregnancy