Extraction of hemodynamic pulse pressure from fluid and myocardial accelerations
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United States of America Patent
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Apr 2, 2002
Issued Date -
N/A
app pub date -
Dec 30, 1999
filing date -
Oct 13, 1998
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Abstract
A cardiac stimulating apparatus and method is described that non-intrusively determines an amount indicative of hemodynamic pulse pressure from an accelerometer signal. The amount indicative of pulse pressure is determined over several cardiac cycles and is used to optimize cardiac performance by evaluating the amount indicative of pulse pressure over varying timing intervals. The timing intervals are measured between at least one of intrinsic and paced stimulations of pre-selected chambers of the heart and a maximum pulse pressure indicates the optimum timing interval under manipulation. The cardiac stimulating apparatus and method may be used in any of several pacing modes including A-V pacing, V-V pacing, or A-A pacing.
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