[Nausea and dizziness in a patient with heart failure and cardiac resynchronization therapy].

A 77-year-old man with ischemic cardiomyopathy, severely reduced left ventricular function, and biventricular defibrillator for primary prevention received catheter ablation for multiple ventricular tachycardia despite amiodarone treatment. A few weeks later, the patient presented with unspecific symptoms such as general malaise and nausea.