An automatic pacemaker sensing algorithm using automatic gain control

Author

Bae, Cheol Soo

Author_Institution

Dept. of Electron. Commun., Kwandong Univ., Kangneung, South Korea

Volume

1

fYear

1999

fDate

1999

Firstpage

375

Abstract

An automatic gain control (AGC) algorithm is implemented in a pacemaker to improve sensing performance and minimize human intervention. The sense amplifier gain is controlled automatically by electrogram amplitude. The sensing threshold (sensitivity) is set between 20 and 30% of the intrinsic peak amplitude. Sensing performance of the AGC algorithm is evaluated using 12 human intracardiac electrograms. The performance is compared to that of a conventional fixed sensing method utilizing an optimal threshold. The results from the evaluation indicate that the sensing capability of the automatic sensing algorithm is as good as or better than the conventional fixed sensing threshold method and that the AGC adjusts both amplifier gain and sensing threshold appropriately without human intervention

Keywords

amplifiers; automatic gain control; electrocardiography; medical signal detection; pacemakers; AGC algorithm; amplifier gain; automatic gain control; automatic pacemaker sensing algorithm; conventional fixed sensing threshold method; electrogram amplitude; human intervention; human intracardiac electrograms; intrinsic peak amplitude; sense amplifier gain; sensing performance; sensing threshold; sensitivity; Automatic control; Communication system control; Electrodes; Gain control; Humans; Implants; Interference; Pacemakers; Safety; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 99. Proceedings of the IEEE Region 10 Conference

Conference_Location

Cheju Island

Print_ISBN

0-7803-5739-6

Type

conf

DOI

10.1109/TENCON.1999.818429

Filename

818429