<s>
Pacemaker	B-Algorithm
crosstalk	I-Algorithm
results	O
when	O
the	O
pacemaker-generated	O
electrical	O
event	O
in	O
one	O
chamber	O
is	O
sensed	O
by	O
the	O
lead	O
in	O
another	O
chamber	O
,	O
resulting	O
in	O
inappropriate	O
inhibition	O
of	O
the	O
pacing	O
artifact	O
in	O
the	O
second	O
chamber	O
.	O
</s>
<s>
Crosstalk	O
can	O
only	O
occur	O
in	O
dual	O
chamber	O
or	O
biventricular	O
pacemaker	B-Device
.	O
</s>
<s>
It	O
happens	O
less	O
often	O
in	O
more	O
recent	O
models	O
of	O
dual	O
chamber	O
pacemakers	B-Device
due	O
to	O
the	O
addition	O
of	O
a	O
ventricular	O
blanking	O
period	O
,	O
which	O
coincides	O
with	O
the	O
atrial	O
stimulus	O
.	O
</s>
<s>
Newer	O
dual	O
chamber	O
pacemakers	B-Device
also	O
use	O
bipolar	O
leads	O
with	O
a	O
smaller	O
pacing	O
spike	O
,	O
and	O
steroid	O
eluting	O
leads	O
with	O
lower	O
pacing	O
thresholds	O
.	O
</s>
