Method and apparatus for controlling the pacing rate of a metabo

Details Method and apparatus for controlling the pacing rate of a metabo Method and apparatus for controlling the pacing rate of a metabo

1991-12-23

1993-10-05

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1365

Patent

active

052495728

ABSTRACT:
Controlling a cardiac pacemaker wherein the cardiac pacing rate is controlled according to a measure of the metabolic demand. The average minute ventilation MV-8-0 is measured over the eight last breathing cycles (first one to eighth one), and it is compared with the average minute ventilation MV-8-1 over the previous eight breathing cycles (ninth one to sixteenth one), and it is determined that an effort phase is present when MV-8-0>MV-8-1, and that a recovery phase is present when MV-8-0<MV-8-1. These determinations are used to determine whether sensed changes in the ventilation correspond to transitions between the effort and recovery or ventilation gaps or artifacts so that the cardiac pacing rate is not decreased during an effort.

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