Rate responsive pacing system using the integrated evoked potent

Details Rate responsive pacing system using the integrated evoked potent Rate responsive pacing system using the integrated evoked potent

1985-12-18

1988-08-30

Kamm, William E.

Surgery

Truss

Pad

A61N 130

Patent

active

047669012

ABSTRACT:
A rate responsive cardiac pacing system is provided. In the illustrative embodiment, electrical stimulus pulses are applied to the heart ventricle and the evoked potential of the applied electrical stimulus pulses is detected. The detected potential is integrated over time to obtain a depolarization gradient duration. The depolarization gradient duration is compared with a corresponding depolarization gradient duration of at least one previous cardiac cycle. The rate of the electrical stimulus pulses is controlled in response to this comparison.

REFERENCES:
patent: 4140132 (1979-02-01), Dahl
patent: 4202339 (1980-05-01), Wirtzfeld et al.
patent: 4228803 (1980-10-01), Rickards
patent: 4305396 (1981-12-01), Wittkampf et al.
Fananapazir, et al., "Reliability of the Evoked Response . . . ," 8 Pace 701-714 (Sep.-Oct. 1985).

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