Patent ID: 6741886
Filing Date: 2004-05-25
Classification: A61B,A61N

Abstract:
An ecg recorder for detecting and displaying cardiac signals picked up on a plurality of skin contacting surface electrodes disposed on a patient at predetermined body locations in whom a rate-adaptive cardiac rhythm management device is implanted, the cardiac rhythm management device being of the type having minute ventilation as a control parameter for the rate at which the device produces pacing pulses, the device having a means for impressing a carrier signal of a given frequency in timed bursts of a predetermined repetition rate between a first electrode disposed within the patient's thoracic cavity and a reference electrode, comprising:(a) a minute ventilation detection circuit in the ecg recorder connected to receive signals picked up by pairs of said surface electrodes, the signals picked up by the pairs of said surface electrodes including cardiac signal components, pacing pulse components, noise components and components due to said carrier, said minute ventilation detection circuit indicating the time of occurrence of the components due to said carrier signal.