Implantation of additional defibrillation lead into the coronary sinus: an effective method of decreasing defibrillation threshold Wszczepienie dodatkowej elektrody defibrylującej do zatoki wieńcowej: skuteczna metoda obniżenia progu defibrylacji

We report a case of successful implantation of an additional defibrillation lead into the coronary sinus due to high defibrillation threshold (DFT) in a seriously ill patient with a history of extensive myocardial infarction referred for implantable cardioverter-defibrillator implantation after an episode of unstable ventricular tachycardia. All previous attempts to reduce DFT, including subcutaneous electrode implantation, had been unsuccessful.