Minute ventilation dependent rate responsive pacer
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United States of America Patent
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-
Jun 24, 1986
Grant Date -
N/A
app pub date -
Oct 10, 1984
filing date -
Feb 7, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic circuit included in a pacer detects the impedance between two electrodes connected to it and made up by the conducting part of the pacer case (B) and by an auxiliary subcutaneous lead placed in the chest or by an electrode placed on the insulating part (C) of the case itself. The changing geometry of the chest, due to pulmonary ventilation, determines the impedance variations. The electronic circuit, by processing the impedance signal is able to automatically adjust the stimulation rate of the ventricle and/or of the atrium between minimum and maximum preset values according to the activity levels of the patient.
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