<s>
An	O
idioventricular	B-Algorithm
rhythm	I-Algorithm
is	O
a	O
cardiac	B-Algorithm
rhythm	I-Algorithm
characterized	O
by	O
a	O
rate	O
of	O
<	O
50	O
beats	O
per	O
minute	O
(	O
bpm	O
)	O
,	O
absence	O
of	O
P	O
waves	O
and	O
widening	O
of	O
the	O
QRS	O
complex	O
.	O
</s>
<s>
In	O
cases	O
where	O
the	O
heart	O
rate	O
is	O
between	O
50	O
and	O
110	O
bpm	O
,	O
it	O
is	O
known	O
as	O
accelerated	O
idioventricular	B-Algorithm
rhythm	I-Algorithm
and	O
ventricular	B-Application
tachycardia	I-Application
if	O
the	O
rate	O
exceeds	O
120	O
bpm	O
.	O
</s>
<s>
Causes	O
of	O
idioventricular	B-Algorithm
rhythms	I-Algorithm
are	O
varied	O
and	O
can	O
include	O
drugs	O
or	O
a	O
heart	O
defect	O
at	O
birth	O
.	O
</s>
<s>
Various	O
etiologies	O
may	O
contribute	O
to	O
the	O
formation	O
of	O
an	O
idioventricular	B-Algorithm
rhythm	I-Algorithm
,	O
and	O
include	O
:	O
</s>
<s>
The	O
ventricles	O
acting	O
as	O
their	O
own	O
pacemaker	O
gives	O
rise	O
to	O
an	O
idioventricular	B-Algorithm
rhythm	I-Algorithm
.	O
</s>
<s>
An	O
ECG	B-Application
trace	I-Application
is	O
required	O
for	O
diagnosis	O
.	O
</s>
<s>
Antidysrhythmics	B-Algorithm
may	O
be	O
utilised	O
if	O
the	O
patient	O
suffers	O
from	O
dysrhythmias	O
.	O
</s>
