<s>
Rearrest	B-Algorithm
(	O
also	O
known	O
as	O
refibrillation	O
or	O
recurrent	O
ventricular	O
fibrillation	O
)	O
is	O
a	O
phenomenon	O
that	O
involves	O
the	O
resumption	O
of	O
a	O
lethal	O
cardiac	B-Application
dysrhythmia	I-Application
after	O
successful	O
return	O
of	O
spontaneous	O
circulation	O
(	O
ROSC	O
)	O
has	O
been	O
achieved	O
during	O
the	O
course	O
of	O
resuscitation	O
.	O
</s>
<s>
Survival	O
to	O
hospital	O
discharge	O
rates	O
are	O
as	O
low	O
as	O
7%	O
for	O
cardiac	O
arrest	O
in	O
general	O
and	O
although	O
treatable	O
,	O
rearrest	B-Algorithm
may	O
worsen	O
these	O
survival	O
chances	O
.	O
</s>
<s>
Rearrest	B-Algorithm
commonly	O
occurs	O
in	O
the	O
out-of-hospital	O
setting	O
under	O
the	O
treatment	O
of	O
health	O
care	O
providers	O
.	O
</s>
<s>
Rearrest	B-Algorithm
,	O
which	O
may	O
have	O
a	O
similar	O
etiology	O
to	O
cardiac	O
arrest	O
,	O
is	O
characterized	O
as	O
a	O
compromise	O
in	O
the	O
electrical	O
activity	O
of	O
the	O
heart	O
often	O
due	O
to	O
an	O
ischemic	O
event	O
.	O
</s>
<s>
The	O
post-arrest	O
patient	O
who	O
has	O
recently	O
obtained	O
pulses	O
,	O
is	O
dependent	O
on	O
prehospital	O
care	O
providers	O
for	O
ventilation	O
assistance	O
,	O
arrhythmia	B-Application
correction	O
through	O
medication	O
and	O
blood	O
pressure	O
monitoring	O
.	O
</s>
<s>
Therefore	O
,	O
insufficient	O
care	O
in	O
any	O
of	O
these	O
treatments	O
may	O
contribute	O
to	O
a	O
rearrest	B-Algorithm
event	O
.	O
</s>
<s>
The	O
lethal	O
arrhythmia	B-Application
may	O
be	O
either	O
ventricular	O
fibrillation	O
,	O
ventricular	B-Application
tachycardia	I-Application
or	O
asystole	O
.	O
</s>
<s>
A	O
strong	O
suspect	O
that	O
may	O
be	O
a	O
critical	O
contributor	O
to	O
rearrest	B-Algorithm
is	O
the	O
administration	O
of	O
chest	O
compressions	O
to	O
the	O
patient	O
when	O
the	O
patient	O
has	O
already	O
achieved	O
a	O
pulsatile	O
rhythm	O
.	O
</s>
<s>
It	O
is	O
often	O
difficult	O
to	O
determine	O
the	O
presence	O
of	O
a	O
pulse	O
in	O
a	O
cardiac	O
arrest	O
patient	O
,	O
thus	O
chest	O
compressions	O
may	O
be	O
given	O
by	O
the	O
unaware	O
resuscitator	O
and	O
this	O
added	O
stress	O
on	O
the	O
heart	O
may	O
contribute	O
to	O
a	O
rearrest	B-Algorithm
event	O
.	O
</s>
<s>
Similar	O
to	O
cardiac	O
arrest	O
,	O
rearrest	B-Algorithm
is	O
treated	O
with	O
both	O
cardiopulmonary	O
resuscitation	O
and	O
defibrillation	O
.	O
</s>
<s>
Rearrest	B-Algorithm
may	O
reduce	O
the	O
likelihood	O
of	O
survival	O
when	O
compared	O
to	O
patients	O
who	O
have	O
had	O
just	O
one	O
episode	O
of	O
cardiac	O
arrest	O
.	O
</s>
<s>
This	O
phenomenon	O
may	O
be	O
contributed	O
to	O
rearrest	B-Algorithm
.	O
</s>
<s>
(	O
2010	O
)	O
ascertained	O
rearrest	B-Algorithm
in	O
all	O
initial	O
and	O
rearrest	B-Algorithm
rhythms	O
treated	O
by	O
any	O
level	O
of	O
Emergency	O
Medical	O
Service	O
(	O
EMS	O
)	O
,	O
finding	O
a	O
rearrest	B-Algorithm
rate	O
of	O
36%	O
and	O
a	O
lower	O
but	O
not	O
significantly	O
different	O
rate	O
of	O
survival	O
to	O
hospital	O
discharge	O
in	O
cases	O
with	O
rearrest	B-Algorithm
compared	O
to	O
those	O
without	O
rearrest	B-Algorithm
.	O
</s>
<s>
Current	O
research	O
seeks	O
to	O
predict	O
the	O
event	O
of	O
rearrest	B-Algorithm
after	O
patients	O
have	O
already	O
achieved	O
ROSC	O
.	O
</s>
<s>
Biosignals	B-Algorithm
,	O
such	O
as	O
electrocardiogram	B-Application
(	O
ECG	B-Application
)	O
,	O
have	O
the	O
potential	O
to	O
predict	O
the	O
onset	O
of	O
rearrest	B-Algorithm
and	O
are	O
currently	O
being	O
investigated	O
to	O
preemptively	O
warn	O
health	O
care	O
providers	O
that	O
rearrest	B-Algorithm
could	O
be	O
imminent	O
.	O
</s>
<s>
A	O
stronger	O
pulse	O
detector	O
would	O
also	O
contribute	O
to	O
lowering	O
the	O
rate	O
of	O
rearrest	B-Algorithm
.	O
</s>
