Adaptive method and apparatus for extracting an evoked response

Details Adaptive method and apparatus for extracting an evoked response Adaptive method and apparatus for extracting an evoked response

1996-08-29

1997-12-16

Jastrzab, Jeffrey R.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

128708, 128901, A61N 137

Patent

active

056979576

ABSTRACT:
In a method and apparatus for suppressing electrode polarization components in a sensed cardiac signal, the sensed cardiac signal is added to either a differentiated or autocorrelated sensed cardiac signal and a difference is formed between the original sensed cardiac signal and the autocorrelated or differentiated signal, thereby extracting an evoked response component from the sensed cardiac signal, the evoked response component otherwise being overshadowed by the much higher-amplitude polarization component.

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"The Ventricular Intracardiac Unipolar Paced-Evoked Potential In An Isolated Animal Heart," Economides et al, PACE, vol. 11, Feb. 1988, pp. 203-213.
Abstract of "A Model Of the Polarization Dependent Impedance," Uhrenius, Master Thesis, The Royal Institute of Technology, Stockholm 1995.

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