Myopotential inhibition of unipolar lithium pacemakers

The effect of isometric upper extremity exercise on pacemaker function was evaluated in 27 patients who remained pacemaker-dependent during testing. Inhibition was demonstrated in eight (31 percent) of which five were symptomatic. Based on design of the sensing amplifier and return to an all-metal h...

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Bibliographic Details
Published inChest Vol. 82; no. 4; p. 461
Main Authors Levine, P A, Caplan, C H, Klein, M D, Brodsky, S J, Ryan, T J
Format Journal Article
LanguageEnglish
Published United States 01.10.1982
Subjects
Action Potentials
Adult
Aged
Bioelectric Energy Sources - standards
Equipment Design
Evaluation Studies as Topic
Female
Humans
Isometric Contraction
Lithium
Male
Middle Aged
Muscles - physiology
Pacemaker, Artificial - standards
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Summary:The effect of isometric upper extremity exercise on pacemaker function was evaluated in 27 patients who remained pacemaker-dependent during testing. Inhibition was demonstrated in eight (31 percent) of which five were symptomatic. Based on design of the sensing amplifier and return to an all-metal housing in the unipolar lithium pulse generators, myopotential inhibition is being recognized as one cause of symptomatic pacemaker inhibition that is more common than generally appreciated. A method of evaluation and management options for symptomatic patients are discussed. Routine testing of all patients should be performed at the time of a regular office evaluation. If one model pulse generator appears to be particularly prone to myopotential inhibition, this knowledge should be considered in the choice of future pacing systems.
ISSN:0012-3692
DOI:10.1378/chest.82.4.461