subsidiary atrial pacemaker
[ səb-sĭd′ē-ĕr′ē ]
A secondary source for rhythmic control of the heart, available for controlling cardiac activity if the sinoatrial pacemaker fails.
Words nearby subsidiary atrial pacemaker
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.