[The emergency heart transplant].

From the International Registry on Cardiac Transplantation we can not infer a higher mortality in urgent or emergent Cardiac Transplantation. The data in the Spanish Registry and in the literature show that the risk is higher in these patients compared to non urgent transplantation, implying ethical considerations which are discussed in the article. A different approach to urgent transplantation could be based on previous circulatory support, or heart assist systems as a bridge to transplantation.