<s>
An	O
intraventricular	B-Algorithm
block	I-Algorithm
is	O
a	O
heart	B-Algorithm
conduction	I-Algorithm
disorder	O
—	O
heart	B-Algorithm
block	I-Algorithm
of	O
the	O
ventricles	O
of	O
the	O
heart	O
.	O
</s>
<s>
An	O
example	O
is	O
a	O
right	B-Algorithm
bundle	I-Algorithm
branch	I-Algorithm
block	I-Algorithm
,	O
right	O
fascicular	O
block	O
,	O
bifascicular	B-Algorithm
block	I-Algorithm
,	O
trifascicular	B-Algorithm
block	I-Algorithm
.	O
</s>
<s>
Intraventricular	B-Algorithm
conduction	I-Algorithm
delays	O
(	O
IVCD	O
)	O
are	O
conduction	B-Algorithm
disorders	I-Algorithm
seen	O
in	O
intraventricular	O
propagation	O
of	O
supraventricular	O
impulses	O
resulting	O
in	O
changes	O
in	O
the	O
QRS	B-Algorithm
complex	I-Algorithm
duration	O
or	O
morphology	O
,	O
or	O
both	O
.	O
</s>
<s>
IVCD	O
can	O
be	O
caused	O
by	O
abnormalities	O
in	O
the	O
structures	O
of	O
bundle	B-Algorithm
of	I-Algorithm
His	I-Algorithm
,	O
Purkinje	B-Algorithm
fibers	I-Algorithm
or	O
ventricular	O
myocardium	O
.	O
</s>
<s>
Nonspecific	O
intraventricular	B-Algorithm
conduction	I-Algorithm
delay	O
(	O
NICD	O
)	O
is	O
a	O
delay	O
with	O
widened	O
QRS	B-Algorithm
complex	I-Algorithm
but	O
without	O
a	O
specific	O
intraventricular	B-Algorithm
block	I-Algorithm
present	O
.	O
</s>
