Five position code for pacemakers

Hello!

For those who don't know about pacemakers:

The first position reflects the chamber(s) paced.
A - atrium
V - ventricle
D - dual chamber (ie, both the atrium and the ventricle)

The second position refers to the chamber(s) sensed.
A - atrium
V - ventricle
D - dual chamber (ie, both the atrium and the ventricle)
O - absence of sensing

The third position refers to how the pacemaker responds to a sensed event.
I - sensed event inhibits the output pulse and causes the pacemaker to recycle for one or more timing cycles.
T - an output pulse is triggered in response to a sensed event.
D - indicates that there are dual modes of response. **
O - indicates no response to sensed input.

** An event sensed in the atrium inhibits the atrial output but triggers a ventricular output. If the ventricular lead senses a native ventricular signal during the programmed delay, it will inhibit the ventricular output.

The fourth position reflects rate modulation, also referred to as rate responsive or rate adaptive pacing.
R - pacemaker has rate modulation.
O - rate modulation is either unavailable or disabled.

The fifth position specifies the location or absence of multisite pacing.
O - No multisite pacing
A - multisite pacing in the atrium or atria
V - multisite pacing in the ventricle or ventricles
D - indicates dual multisite pacing in both atrium and ventricle

Mnemonic: PSResRateM

-IkaN