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A New Code for Pacemaker Operating Modes
Author(s) -
BROWNLEE R.R.,
SHIMMEL J.B.,
MARCO C.J.
Publication year - 1981
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1981.tb03718.x
Subject(s) - medicine , single chamber , event (particle physics) , code (set theory) , ventricular pacing , cardiology , computer science , programming language , physics , set (abstract data type) , quantum mechanics , heart failure
A new code is proposed that can be used as a supplement to the ICHD code to describe single‐ and dual‐chamber pacemaker operating modes. The code visually jndicates the chamber(s) involved by means of a common base‐line with indicators for atrial activity above and ventricular activity below. Letter indicators are used. For single‐chamber units, on O represents the chamber in which no pacemaker activity occurs. P represents pacing, S sensing, I A inhibition by a sensed atrial event, I v inhibition by a sensed ventricular event, T A triggering by a sensed atrial event, and tv triggering by a sensed ventricular event. For example, o pacemaker mode described as PSI A J v JPST A I v paces and senses both chambers; inhibits atrial pacing by a sensed event in either chamber; inhibits ventricular pacing by a sensed ventricuiar event but triggers ventricuiar pacing, after an assumed A‐V delay, by a sensed atrial event. Thus even the most complex modes of pacing operation can be clearly and accurately described by means of this new code. Especially useful in teaching applications is the distinction of acfivity by chamber and the description of response in one chamber to activity in the other.