A heartrate monitor of the invention includes a signal receiver adapted for being coupled to at least one sensor coupled to a medical patient, for providing an ECG signal and a pacemaker detection signal. A pacemaker activity checker, responsive to the pacemaker detection signal and the ECG...http://www.google.es/patents/US5771898?utm_source=gb-gplus-sharePatente US5771898 - Method and apparatus for accurate counting of paced heartbeats
Method and apparatus for accurate counting of paced heartbeats
