[CardioWest, a complete artificial heart, the French experience].

Abstract

The development of implantable electric assist systems for the left ventricle cannot be used in all patients. Approximately one-third of them who could benefit from circulatory support while waiting for transplantation also require a supporting system for the right ventricle. In addition, the small number of available donor organs means that only those patients with the best prognosis can be transplanted. From January 1993 to December 1995, 36 patients (33 men, 3 women) mean age 41 years (range 19-60) were treated with a total artificial heart system, CardioWest at the La Pitié Hospital in Paris and at the Laennec Hospital in Nantes, France. Heart assist lasted 1 to 138 days (mean 31 days). Indications were terminal heart failure due to dilated (n = 21) or ischemic (n = 11) cardiomyopathy and 4 high-risk indications (chronic rejection, primary failure, hereditary heart disease, polyvalve disease). Twenty-two of these patients (61.1%) were transplanted. By using strict selection criteria, the total artificial heart CardioWest was able to maintain satisfactory hemodynamic conditions until transplantation without compromising the small number of donor organs available. The total artificial heart is the best system available for total circulatory support in case of dual ventricular failure. The risk of infection is low and the rate of thrombo-embolic events is reduced when care is taken in controlling coagulation, allowing long-term support. Independently of the experience of the different teams, CardioWest is the only device currently available allowing total heart support; its use is justified in particular when other assist devices are unsuccessful.