7. NBG Code – The Usual Pacing Modes
I
II
III
IV
V
Chamber(s)
Paced
Chamber(s)
Sensed
Response to
Sensing
Rate
Multisite
Modulation Pacing
O = None
O = None
O = None
O = None
O = None
A = Atrium
A = Atrium
T = Triggered
R = Rate
A = Atrium
V = Ventricle
V = Ventricle
I = Inhibited
D = Dual (A + V)
D = Dual (A + V)
D = Dual (T + I)
S = Single (A or
S = Single (A or V)
V)
• Examples
– DDD
– VVI
– DDDR
– VVIR
– DDIR
– AAI
modulation
V = Ventricle
D = Dual (A + V)
Student Notes
Here are typical pacing modes.
Instructor Notes
Say: To keep from becoming overwhelmed, let’s limit our discussion to those modes found in everyday clinical practice. We will spend most of our time discussing and interpreting ECG strips that demonstrate these operations. Learn these operations, and the less typical modes will be easy.
Ask: What modes have you heard of?
Expected replies: DDD, VVI, VVIR, DDDR
Say: These will be some of the modes of operation that we cover in the coming slides.
With the assistance of the Pacemaker Code and Rate and Interval Conversion Pocket Reference card, ask learners to state functional abilities of DDD, DDDR, DDIR, VVI, VVIR, and AAI.