A device and method for multi chamber pacing a patient's heart having heart failure and intrinsic conduction wherein ventricular tracking is used to pace the ventricle when the sinus rate exceeds a preset atrial maximum tracking rate. The ventricular tracking pacemaker increases the range of pacing the...http://www.google.es/patents/US6256536?utm_source=gb-gplus-sharePatente US6256536 - Device and method for ventricular tracking and pacing
Device and method for ventricular tracking and pacing