Pacing code

Pacing code

I - chamber paced

II - sensed

III - response to sensed event

IV - programmability features. Most pacemakers are programmable or rate modulated, so IV may not be ommited.

V - anti-tachyarrhythmia functions

Code letters. Position I, II, III, IV

V - ventricle

A - atrium

D - dual (atrium + ventricle)

O - none

T - trigger pacing

I - inhibit pacing

P - programmability of rate and/or output

M- multiprogrammability of rate, output, sensitivity, mode, etc.

C - communicating

R - rate modulation (sensor-driven rate response)

Code letters, Position V:

P - pacing

S - shock

D - dual (P + S)

O - none