IMPLANTABLE HEART STIMULATOR DETERMINING LEFT VENTRICULAR SYSTOLIC PRESSURE

摘要

Implantable heart stimulator comprising a first impedance measurement means adapted to measure and determine a cardiogenic impedance waveform using an impedance configuration arranged to measure myocardial contractility of the heart. The heart stimulator further comprises a calculating means to calculate an estimate value being related to at least two impedance values of the waveform, or of an average waveform of several consecutive waveforms, during a predetermined time period of the waveform, or average waveform, the calculated estimate value being an estimate of the left ventricular (LV) systolic pressure.