A New Rate-Modulated Pacemaker System Optimized by Combination of Two Sensors.

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Bibliographic Details
Title:	A New Rate-Modulated Pacemaker System Optimized by Combination of Two Sensors.
Authors:	Alt, Eckhard¹, Theres, Heinz¹, Heinz, Michael¹, Matula, Markus¹, Thilo, Rudolf¹, Blömer, Hans¹
Source:	Pacing & Clinical Electrophysiology. Aug1988, Vol. 11 Issue 8, p1119-1129. 11p.
Subjects:	Cardiac pacemakers, Central venous pressure, Blood pressure, Exercise, Fever, Venous pressure
Abstract:	A new rate-modulated pacemaker system optimized by combination of two sensors is described. The parameter body activity and central venous blood temperature control the pacemaker rate. The specific characteristic of each parameter determines its role within the algorithm. While the motion sensor yields a fast reaction following the onset OT a change of stress intensity, central venous blood temperature corresponds better to body metabolism. An indication of increased exercise from the motion sensor results in an accordingly rapid increase in the pacing rate. Unless this increased exercise is confirmed by an increase in central venous blood temperature within 2 or 3 minutes, the new motion level will be assumed to he the new baseline motion value and the pace rate will return to a basic pacing rate. Prolonged inappropriate responses are therefore avoided. Longer lasting exercise, fever and nonphysiological signals are recognized and handled safely. Exercise tests with five volunteers under various conditions showed pacing rate behavior that was close to normal. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	A new rate-modulated pacemaker system optimized by combination of two sensors is described. The parameter body activity and central venous blood temperature control the pacemaker rate. The specific characteristic of each parameter determines its role within the algorithm. While the motion sensor yields a fast reaction following the onset OT a change of stress intensity, central venous blood temperature corresponds better to body metabolism. An indication of increased exercise from the motion sensor results in an accordingly rapid increase in the pacing rate. Unless this increased exercise is confirmed by an increase in central venous blood temperature within 2 or 3 minutes, the new motion level will be assumed to he the new baseline motion value and the pace rate will return to a basic pacing rate. Prolonged inappropriate responses are therefore avoided. Longer lasting exercise, fever and nonphysiological signals are recognized and handled safely. Exercise tests with five volunteers under various conditions showed pacing rate behavior that was close to normal. [ABSTRACT FROM AUTHOR]
ISSN:	01478389
DOI:	10.1111/j.1540-8159.1988.tb03963.x