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. 1978 Jan;1(1):90-103.
doi: 10.1111/j.1540-8159.1978.tb03445.x.

Characteristics of intracardiac electrograms

G H Myers, Y M Kresh, V Parsonnet

Characteristics of intracardiac electrograms

G H Myers et al. Pacing Clin Electrophysiol. 1978 Jan.

Abstract

Cardiac electrograms were measured on endocardial leads on patients undergoing pacemaker implantation. The data show that small area electrodes reduce R wave amplitude, decrease width of the complex, and increase slopes. The bandwidth of the electrogram increases as the electrode area decreases. The loading of the sensing amplifier changes these characteristics. Distortion is most pronounced for small area electrodes and low lead resistances.

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