Heart monitoring device
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United States of America Patent
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Jun 10, 2014
Grant Date -
Aug 14, 2008
app pub date -
Jun 16, 2005
filing date -
Jun 16, 2005
priority date (Note) -
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Abstract
An implantable heart stimulating device for indicating congestive heart failure (CHF) has a processor and a sensor combination that senses at least two heart events during one heart cycle at different locations of the heart. The processor is supplied with signals from the sensor combination relating to the sensed events, and determines therefrom at least one heart time interval between the sensed events in the same heart cycle. The processor determines a CHF indicator value representing a degree of CHF based on a variability measure calculated from at least two heart time intervals from at least two different heart cycles. The processor determines the CHF indicator value in relation to previous CHF indicator values.
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