Registry to Assess the Safety and Feasibility of the Subpulmonary Support with the Novel Venous Cannula in Patients with Failing/Absence of the Right Heart

This registry study tracks the safety and feasibility of a specialized heart assist device — a venous cannula used with the EXCOR ventricular assist device (VAD) — in patients whose right side of the heart is failing or absent. It collects data on how these devices work in real-world use. **You may be eligible if...** - You or your legal guardian has provided written consent - You meet clinical criteria for use of a right ventricular assist device (RVAD) or biventricular assist device (BVAD) with the EXCOR VAD system - You are on a transplant waiting list or are eligible for a heart transplant - Your body surface area (a measure of body size) is at least 1.2 m² **You may NOT be eligible if...** - Consent was not given by you or your legal guardian - You have contraindications (medical reasons not to use) the EXCOR VAD system Talk to your doctor to see if this trial is right for you.