An implantable, rate responsive pacemaker, sensitive to impedance changes in the heart as an indicator of cardiac stroke volume or minute volume, wherein common interfering signals such as the intracardiac electrogram, myoelectric signals, pacing artifacts and other pacing after potentials are reduced...http://www.google.es/patents/US5507785?utm_source=gb-gplus-sharePatente US5507785 - Rate responsive cardiac pacemaker with biphasic impedance sensing and method
Rate responsive cardiac pacemaker with biphasic impedance sensing and method
