ACTIVE IMPLANTABLE MEDICAL DEVICE, IN PARTICULAR A CARDIAC STIMULATOR, DEFIBRILLATOR, CARDIOVERTER AND / OR MULTI-SITE DEVICE, WITH DISCRIMINATION OF VENTRICULAR EXTRASYSTOLS DELETERED OR NOT

摘要

The device comprises means for detecting in the heart rhythm the occurrence of a ventricular extrasystole (VES). It further comprises means for measuring the intracardiac impedance (Z), correlated to the instantaneous blood flow, and means for determining, in response to variations in the impedance signal, the presence or absence of mechanical activity. significant of the myocardium consecutive to ventricular extrasystole, and to deliver in response an indicator of the deleterious nature or not of ventricular extrasystole. This indicator makes it possible inter alia, in the following cycle, to adapt in a differentiated manner an operating parameter such as the ventricular escape interval, as a function of the deleterious nature or not of the ventricular extrasystole.