<s>
A	O
left	B-Algorithm
posterior	I-Algorithm
fascicular	I-Algorithm
block	I-Algorithm
(	O
LPFB	B-Algorithm
)	O
,	O
also	O
known	O
as	O
left	B-Algorithm
posterior	I-Algorithm
hemiblock	I-Algorithm
(	O
LPH	O
)	O
,	O
is	O
a	O
condition	O
where	O
the	O
left	O
posterior	O
fascicle	O
,	O
which	O
travels	O
to	O
the	O
inferior	O
and	O
posterior	O
portion	O
of	O
the	O
left	O
ventricle	O
,	O
does	O
not	O
conduct	B-Algorithm
the	I-Algorithm
electrical	I-Algorithm
impulses	I-Algorithm
from	O
the	O
atrioventricular	O
node	O
.	O
</s>
<s>
The	O
wave-front	O
instead	O
moves	O
more	O
quickly	O
through	O
the	O
left	O
anterior	O
fascicle	O
and	O
right	O
bundle	O
branch	O
,	O
leading	O
to	O
a	O
right	O
axis	O
deviation	O
seen	O
on	O
the	O
ECG	B-Application
.	O
</s>
<s>
The	O
American	O
Heart	O
Association	O
has	O
defined	O
a	O
LPFB	B-Algorithm
as	O
:	O
</s>
<s>
The	O
broad	O
nature	O
of	O
the	O
posterior	O
bundle	O
as	O
well	O
as	O
its	O
dual	O
blood	O
supply	O
makes	O
isolated	O
LPFB	B-Algorithm
rare	O
.	O
</s>
