 It is unclear, whether laparoscopic sleeve gastrectomy is effective and safe in patients on CF-LVAD. The literature is limited to case reports and retrospective series of up to 4 patients. This is the first prospective series including more than 4 patients with the specific aim to enable obese LVAD supported patients to reach a BMI within listing criteria for heart transplantation by the means of laparoscopic sleeve gastrectomy. 