[Effect of pulseless ventricular tachycardia on sympathetic activity].

The role of sympathetic activation in the genesis of life threatening ventricular arrhythmia is abundantly documented. The protective effect of sympathetic activation at the time of destabilizing ventricular tachycardia is less well known. Recently, muscle sympathetic nerve activity was recorded at our cardiac electrophysiology laboratory in a 62-year-old man who suffered from severe left ventricular failure. In order to elucidate the complex relationship between arrhythmias and autonomic nervous activity, his muscle sympathetic nerve activity recording depicting response to pulseless ventricular tachycardia is hereby presented.