Dual chamber pacer with alternative rate adaptive means and meth

Details Dual chamber pacer with alternative rate adaptive means and meth Dual chamber pacer with alternative rate adaptive means and meth

1983-12-27

1985-07-09

Kamm, William E.

Surgery

Truss

Pad

A61N 136

Patent

active

045275688

ABSTRACT:
A dual chamber pacemaker system is disclosed with means for operating in one or another of alternate rate adaptive modes. The pacemaker incorporates an atrial synchronous mode, wherein, pacing rate is determined as a function of sensed atrial signals. It also incorporates a T.sub.x mode, wherein pacing rate is controlled by a sensed QT interval, and an extra sensor mode, wherein pacing rate is controlled as a function of at least one sensed body parameter. The pacemaker comprises means for automatically testing the applicability or appropriateness of the mode currently in use, and for automatically selecting the appropriate rate control mode.

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Geddes et al., "The Exercise-Responsive Cardiac Pacemaker", IEEE Trans Biomed Eng., vol. BME-31, No. 12, Dec. 1984, pp. 763-770.
"Rate Responsive Pacing", by Anthony F. Rickards et al., Clin. Prog. Pacing and Electrophysiol., vol. 1, No. 1, 1983.
"AV Synchrony and Cardiac Rate", by Seymour Furman, M.D., Pace, vol. 6, May-Jun. 1983, Part I.
"The Use of QT Interval to Determine Pacing Rate: Early Clinical Experience", by A. F. Rickards et al., Pace, vol. 6, Mar.-Apr. 1983, Part III.

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