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Mustapha El Hamriti, Henrik Fox, Philipp Sommer, Sebastian Rojas Hernandez

• \(\bf Background\) Despite substantial technical improvements in long-term mechanical circulatory support, ventricular tachycardia (VT) remains a major challenge in left ventricular assist device (LVAD) patients. Recurrent VTs in LVAD patients are not only associated with limited quality of life, but also increased mortality. Although LVAD therapy improves VT tolerance of the left ventricle, haemodynamical deterioration of the right ventricle is the limiting factor in these patients. \(\textbf {Case summary}\) We present a case report of a hybrid epicardial VT ablation of incessant VTs in a 53-year-old man with advanced heart failure and St.p. LVAD implantation. With this unique clinical case report, we describe an epicardial VT ablation using secondary surgical open-heart access in a patient with therapy-refractory VTs combing left-sided minithoracotomy with high-density (HD) mapping and catheter ablation. \(\bf Discussion\) To the best of our knowledge, the presented approach is the first interdisciplinary case of epicardial VT ablation using secondary surgical open-heart access in an LVAD patient with therapy-refractory VTs. By combing left-sided minithoracotomy with HD mapping and catheter ablation, we could to demonstrate that even in these complex patients epicardial VT ablations can be performed safely and improve quality of life of LVAD patients with recurrent implantable cardioverter-defibrillator shock therapies.