Hemodynamically rate responsive pacemaker and method of automati

Details Hemodynamically rate responsive pacemaker and method of automati Hemodynamically rate responsive pacemaker and method of automati

1990-02-21

1991-06-18

Jaworski, Francis

Surgery

Truss

Pad

A61N 100

Patent

active

050242229

ABSTRACT:
In a rate responsive pacemaker, a physiological sensor is used to sense the physiological needs of the patient's heart and to control both the pacing rate and the A-V interval accordingly. A first adjustment means triggers the timing circuitry to adjust the stimulation rate to a slightly sub-optimal value of cardiac output. A second adjustment means adjusts the A-V interval until hemodynamics are optimized according to the physiological sensor. The improvement in hemodynamics due to the A-V adjustment allows a further decrease in the stimulation rate by the first adjustment means, thereby conserving the limited battery supply.

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Furman, Seymour M.D., "AV Synchrony and Cardiac Rate," PACE, vol. 6 (May-Jun. 1983, Part 1), pp. 513-514.
Benditt, D. G. M.D. et al., "Sensor-Triggered, Rate-Variable Cardiac Pacing," Annals of Internal Medicine (1987), pp. 714-724.
Wirtzfeld, A. et al., "Central Venous Oxygen Saturation for the Control of Automatic Rate-Responsive Pacing," PACE, vol. 5 (Nov.-Dec. 1982), pp. 829-835.

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