Mode switching for atrial tachyarrhythmias is a concept that originated fro
m use of DDI mode and was introduced in the early 1990s to prevent dual-cha
mber pacemakers from ventricular cracking of rapid atrial rates. This artic
le describes the currently available systems and discusses the advantages a
nd disadvantages of the technique. The results of a preliminary randomized
controlled trial of 1 algorithm and plans for a second study are presented.
(C) 1999 by Excerpta Medica, Inc.