Why the study?
What are the determinants of chronic stimulation thresholds in patients with long-term myocardial pacing electrodes?
Population
Patients with long-term cardiac pacing using myocardial electrodes (n=45 electrodes)
Design
Cohort
Follow-up
mean 50 months (range 17 to 99 months)
Authors
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May inform myocardial electrode site selection; hypothesis-generating and leaves open prospective validation in contemporary devices.
What are the determinants of chronic stimulation thresholds in patients with long-term myocardial pacing electrodes?
Chronic stimulation thresholds for myocardial electrodes average 2.2 mA and are higher in younger patients, enlarged hearts, and left ventricular apical locations, with no correlation to initial thresholds.
Kostiainen et al. (1980) studied this question.
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