Table 2. Choice of Pacemaker Generator in Selected
Indications for Pacing
Pacemaker
Generator
Sinus Node
Dysfunction
Single-chamber
atrial pacemaker
������ No suspected
������ Not appropriate ������ Not appropriate
abnormality of
AV conduction
and not at
increased risk for
future AV block
������ Maintenance of
AV synchrony
during pacing
desired
������ Maintenance of
������ Chronic AF
������ Chronic AF
AV synchrony
or other atrial
or other atrial
during pacing not
tachyarrhythmia
tachyarrhythmia
necessary
or maintenance
of AV synchrony
during pacing not
necessary
������ Rate response
������ Rate response
������ Rate response
available if
available if
available if desired
desired
desired
Single-chamber
ventricular
pacemaker
Atrioventricular
Block
Neurally Mediated
Syncope or
Carotid Sinus
Hypersensitivity
������ AV synchrony
during pacing
desired
������ Rate response
available if
desired
������ Sinus mechanism
present
������ Suspected
abnormality of
AV conduction
or increased risk
for future AV
block
������ Rate response
available if
desired
Dual-chamber
pacemaker
������ AV synchrony
during pacing
desired
������ Rate response
available if desired
������ Atrial pacing
desired
������ Rate response
available if desired
Single-lead, atrialsensing ventricular
pacemaker
������ Not appropriate
������ Desire to limit
the number of
pacemaker leads
������ Not appropriate
15