Pacing method and system for blood flow velocity measurement and regulation of heart stimulating signals based on blood flow velocity
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United States of America Patent
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Jun 7, 1994
Issued Date -
N/A
app pub date -
May 8, 1992
filing date -
Sep 25, 1989
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Abstract
A system and method for regulation of pacing signals, and more particularly for regulation of an atrioventricular interval in a cardiac electrotherapy system based on measurement of blood flow velocity profiles. More particularly, a diastolic blood flow filling wave and an atrial blood flow filling wave are determined and a time delay between peaks of the two waves and/or a superimposition velocity of the two waves relative to one another are utilized for the regulation. The regulation preferably occurs by comparing the measured time delay to a desired time delay or desired superimposition velocity, and the result of the comparison is then employed for regulating the pacing, or regulating the atrio-ventricular interval.
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