In a pacemaker, a method and apparatus for providing rate response in proportion to the patient's metabolic demand for cardiac output as determined in response to the patient's breathing rate or respiratory minute ventilation or contraction strength, optionally augmented by the patient's activity level....http://www.google.fr/patents/US6208900?utm_source=gb-gplus-shareBrevet US6208900 - Method and apparatus for rate-responsive cardiac pacing using header mounted pressure wave transducer
Method and apparatus for rate-responsive cardiac pacing using header mounted ...