Rate responsive pacing using the magnitude of the repolarization

Details Rate responsive pacing using the magnitude of the repolarization Rate responsive pacing using the magnitude of the repolarization

1986-03-19

1988-07-26

Kamm, William E.

Surgery

Truss

Pad

128704, A61N 136

Patent

active

047593679

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 repolarization gradient magnitude. The repolarization gradient magnitude is compared with a corresponding repolarization gradient magnitude 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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