System and method for deriving hemodynamic signals from a cardia

Details System and method for deriving hemodynamic signals from a cardia System and method for deriving hemodynamic signals from a cardia

1993-11-16

1996-01-02

Sykes, Angela D.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

607 9, 607 24, 607116, A61N 1365

Patent

active

054804124

ABSTRACT:
A processing system and method are provided for deriving an improved hemodynamic indicator from cardiac wall acceleration signals. The cardiac wall acceleration signals are provided by a cardiac wall motion sensor that responds to cardiac mechanical activity. The cardiac wall acceleration signals are integrated over time to derive cardiac wall velocity signals, which are further integrated over time to derive cardiac wall displacement signals. The cardiac wall displacement signals correlate to known hemodynamic indicators, and are shown to be strongly suggestive of hemodynamic performance. An implantable cardiac stimulating device which uses cardiac wall displacement signals to detect and discriminate cardiac arrhythmias is also provided.

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