Implantable cardiac stimulating apparatus and method employing detection of P-waves from signals sensed in the ventricle

摘要: A P-wave detector in a single chamber ventricular cardiac pacemaker, which is adapted to perform VDD pacing, senses natural atrial activity the form of P-waves from standard lead implanted ventricle heart. The electrically coupled sensing and, although electrode ventricle, circuitry within pacemaker perceives intrinsic electrical arising all parts differentiate signals atrium other and non-cardiac using template matching techniques an acquired signal compared with previously stored template.