The Batista procedure was an experimental open-heart surgical technique that aimed to reverse the effects of remodeling in cases of end-stage dilated cardiomyopathy, which is refractory to conventional medical therapy. In spite of promising initial results, the method was soon found to be of little if any benefit, and it is no longer considered a recommended treatment for the disease.
The procedure involves removal of a portion of the left ventricular free wall reducing the volume of the enlarged left ventricle towards normal. The patient had to be connected to a heart-lung machine during surgery to ensure adequate circulation while bypassing the heart.
Despite the positive benefits of such a procedure, the survival rate was only 60%. This procedure is no longer performed in lieu of a heart transplantation in the U.S.
Further reading: http://www.clevelandclinic.org/heartcenter/pub/guide/disease/heartfailure/batista.htm