The purpose of the study is to determine the safety and effectiveness of the Jarvik 2000 Heart as a bridge to heart transplantation in end-stage heart failure patients who are approved heart transplant candidates.

The Jarvik 2000 Heart is a silent compact axial flow impeller pump of 1 inch diameter, weighing 90g with a displacement volume of 25ml. The pump is implanted into the apex of the left ventricle by left thoracotomy, or by mid-sternotomy, or by the subcostal approach. A vascular graft offloads to either the descending thoracic aorta, the ascending thoracic aorta, or the abdominal aorta. The impeller rotates at speeds of 8,000 to 12,000 rpm providing blood flow of up to seven L/minute. At higher speeds the pump can produce 10 L/minute. Power is provided through an abdominal drive line.

Inclusion Criteria: (The following are general inclusion criteria; more specific criteria are outlined in the study protocol).

• Transplant listed UNOS status IA or IB patients.
• BSA >1.5 m2 and <2.3 m2.
• Dependent on one or more intravenous inotropic agents or an intraaortic balloon pump (IABP).

Exclusion Criteria:(The following are general exclusion criteria; more specific criteria are outlined in the study protocol).

• Known risk factors or conditions that would contraindicate LVAD implantation or adversely affect patient survival.
• Evidence of end organ dysfunction.
• Known coagulopathy or contraindication of anticoagulation or antiplatelet agents.
• Systemic infection.
• Malignancies not in remission.
• Current participation in investigational trials with other devices, drugs, or biologic agents.