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pacing catheter

[pā′sĭng]
n.
  1. A cardiac catheter having one or two electrodes at its tip that, when connected to a pulse generator and positioned in the right atrium or ventricle, artificially pace the heart.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.