Heart stimulating device having fusion and pseudofusion heartbeat detection capability
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United States of America Patent
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May 29, 2001
Grant Date -
N/A
app pub date -
Jul 28, 1999
filing date -
Feb 5, 1997
priority date (Note) -
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Abstract
A heart stimulating device has the capability of detecting fusion and/or pseudofusion heartbeats by measuring electrical impedance encountered by a delivered stimulation pulse. The device has a pulse generator connected to a lead system for emitting and delivering stimulation pulses, and an impedance measuring arrangement for measuring the impedance. A logic circuit determines that a response by the cardiac tissue to a delivered stimulation pulse includes a fusion or pseudofusion heartbeat if the measured electrical impedance is within a predetermined impedance range, and determines that the response does not include a fusion and/or pseudofusion heartbeat if the measured electrical impedance is outside of the predetermined impedance range.
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