Digital Medicine and Healthcare Technology,
Journal Year:
2024,
Volume and Issue:
3
Published: Oct. 24, 2024
Managing
pain
when
a
patient
cannot
communicate,
during
anesthesia
or
critical
illness,
is
challenge
many
clinicians
face.
Numerous
subjective
methods
of
evaluating
have
been
developed
to
address
this,
for
instance,
the
visual
analog
and
numerical
rating
scale.
Intraoperatively,
objective
monitoring
in
anesthetized
patients
assessed
through
hemodynamic
parameters;
however,
these
parameters
may
not
always
accurately
reflect
perception.
The
high-frequency
heart
rate
variability
index
(HFVI),
also
known
as
analgesia
nociception
(ANI),
commercially
available
device
by
MDoloris
that
objectively
assesses
based
on
electrocardiogram,
sympathetic
tone,
parasympathetic
tone.
monitor
displays
value
from
0–100,
where
<50
indicates
>50
anti-nociception.
Given
its
potential
pain,
numerous
studies
utilized
this
clinical
non-clinical
settings.
As
such,
we
conducted
literature
review
using
various
search
terms
PubMed
selected
HFVI
our
inclusion
criteria
review.
In
review,
discuss
mechanisms
which
monitors
assess
along
with
results
provide
comprehensive
summary
interested
considering
use
novel
monitoring.
Indian Journal of Anaesthesia,
Journal Year:
2025,
Volume and Issue:
69(6), P. 615 - 620
Published: May 14, 2025
Background
and
Aims:
To
assess
data
recording
rates
of
the
high-frequency
variability
index
(HFVI),
which
becomes
less
reliable
with
vasoactive
medication
use,
examine
use
medications
in
daily
clinical
practice.
The
hypothesis
is
that
when
an
HFVI
sensor
applied
anaesthesia
management
left
to
discretion
anaesthesiologist
charge,
interpretation
would
be
limited.
Methods:
Patients
aged
≥65
years
who
underwent
elective
major
abdominal
surgery
for
malignant
disease
under
general
those
scheduled
>2
h
were
eligible.
anaesthesiologists
managed
patients
sensors
attached
at
their
discretion,
without
any
limitations
on
use.
primary
outcome
was
data-recording
rate.
Secondary
outcomes
intraoperative
bolus
continuous
(ephedrine,
phenylephrine,
atropine,
noradrenaline).
percentage
administration
time
calculated
by
dividing
total
time.
Results:
Of
249
eligible
patients,
successfully
a
mean
rate
73.1%
(95%
confidence
interval:
70.5%,
5.7%).
Two
hundred
ten
received
least
one
during
assessment
period,
ephedrine
dominant.
Sixty-one
phenylephrine
noradrenaline,
ratios
surgical
77.8%
84.9%,
respectively.
Conclusion:
routine
practice
approximately
70%,
many
given
medications;
thus,
caution
must
taken
interpreting
Frontiers in Surgery,
Journal Year:
2023,
Volume and Issue:
10
Published: Aug. 10, 2023
Pain
refers
to
the
subjective,
unpleasant
experience
that
is
related
illness
or
injury.
In
contrast
pain,
nociception
physiological
neural
processing
of
noxious
stimuli,
such
as
intra-operative
surgical
stimuli.
One
novel
device,
Analgesia
Nociception
Index
(ANI),
aims
objectively
measure
by
analyzing
heart
rate
variability
in
patients
undergoing
surgery.
Through
this
method
nociceptive
monitoring,
ANI
device
provide
an
objective,
continuous
evaluation
patient
comfort
levels
and
allow
anesthesiologists
better
manage
stress
analgesia,
perhaps
with
even
efficacy
than
current
practices
used
assess
nociception.
Additionally,
may
have
clinical
application
settings
outside
operating
room,
intensive
care
unit.
narrative
review,
we
compiled
summarized
findings
many
studies
investigated
ANI's
validity
applications
different
settings.
Currently,
literature
appears
mostly
supportive
ability
detect
both
non-surgical
However,
for
benefits,
decreased
opioid
use,
post-operative
pain
compared
standard
appear
controversial.
Because
wide
variety
methodology,
settings,
populations,
limitations
these
studies,
more
investigation
needed
before
any
firm
conclusions
can
be
drawn
on
its
benefits.
Animals,
Journal Year:
2024,
Volume and Issue:
14(9), P. 1366 - 1366
Published: May 1, 2024
Most
of
the
responses
present
in
animals
when
exposed
to
stressors
are
mediated
by
autonomic
nervous
system.
The
sympathetic
system,
known
as
one
responsible
for
“fight
or
flight”
reaction,
triggers
cardiovascular
changes
such
tachycardia
vasomotor
alterations
restore
homeostasis.
Increase
body
temperature
stressed
also
activates
peripheral
compensatory
mechanisms
cutaneous
vasodilation
increase
heat
exchange.
Since
skin
blood
flow
influence
amount
dissipation,
infrared
thermography
is
suggested
a
tool
that
can
detect
said
changes.
review
aims
analyze
application
method
assess
stress-related
activity,
and
their
association
with
heart
rate
variability
domestic
animals.
Veterinary Sciences,
Journal Year:
2024,
Volume and Issue:
11(3), P. 121 - 121
Published: March 6, 2024
The
monitoring
of
nociception/antinociception
poses
a
significant
challenge
during
anesthesia,
making
the
incorporation
new
tools
like
Parasympathetic
Tone
Activity
(PTA)
monitor
an
added
value
in
feline
anesthesia.
Indian Journal of Anaesthesia,
Journal Year:
2023,
Volume and Issue:
67(Suppl 2), P. S77 - S80
Published: Feb. 1, 2023
Managing
post-surgical
pain
(PSP)
is
an
integral
part
of
anaesthesia
practice;
however,
inspite
significant
advancements
in
peri-operative
medicine
and
the
introduction
evidence-based
recommendations
for
PSP
management,
existing
data
suggest
that
it
sub-optimally
managed.[1–3]
The
clinical
prevalence
acute
as
high
80%,
one
to
2/3
patients
suffer
moderate
severe
pain.
This
hampers
early
recovery,
lengthens
hospital
stay,
increases
opioid
consumption,
leads
persistent
(PPSP).[3]
PPSP
observed
5–60%
irrespective
type
surgery
can
be
sufficient
severity
affect
quality
life.[4]
Also,
mentioned
a
previous
editorial
Indian
Journal
Anaesthesia
(IJA),
management
practices
our
country
are
diverse.[5]
All
this
leaves
wondering
whether
current
optimal.
Are
we
really
able
accurately
evaluate
pain?
How
far
have
been
successful
predicting
post-operative
Currently,
risk
prediction
models
including
biomarkers
cyanosure
researchers
clinicians.[6]
In
era
big
data,
events
predicted.
Can
same
performed
successfully
practice?
CURRENT
PERI-OPERATIVE
PAIN
PRACTICE
PATTERNS
Most
literature
agrees
currently
used
multi-modal
strategies
prevent
or
manage
seem
insufficient,
mostly
because
lack
focus
on
organised
approaches
identify
assure
patient-specific
management.[2]
strategy
most
hospitals
includes
fixed
prescription
with
additional
analgesic
according
World
health
Organization
(WHO)
ladder
reduce
subjective
scores.
WHO
which
basically
developed
cancer
tends
worsen
time
relies
heavily
opioids.
Analgesic
administration
per
scores
numerical
rating
scale
(NRS)
visual
analogue
(VAS),
widely
assessment
tool,
may
lead
over-use
opioids
interpret
levels
differently.
Hence,
rather
than
utilising
NRS/VAS
guide
practices,
application
surgery-specific
form
regional
analgesia
closer
site
operation,
psychological
physical
therapy,
patient-controlled
analgesia,
oral
opioid-sparing
immediate
release
formulation
advocated.[4]
Besides
these,
high-quality
complex
task
requiring
multiple
care
personnel
facilities
along
guidelines.
Patient
satisfaction
not
solely
dependent
upon
intensity
pain,
indicators
do
play
role
patient
satisfaction.
Some
paradoxically
report
level
control
despite
might
greater
participation
his/her
treatment
plan,
adequate
facilities,
caring
environment.[3]
Nevertheless,
good
comfort,
satisfaction,
functional
outcomes,
life
goals
drive
care.[7–9]
means
addition
recovery
too
needs
assessed.
randomised
controlled
trial
being
published
issue
IJA,
effect
bolus
intravenous
lignocaine
(1.5
mg/kg
at
induction
followed
by
infusion
1
mg/kg/h
24
hours)
relief
has
evaluated
assessing
Quality
Recovery
15
(QoR15)
score
day
suture
removal
undergoing
breast
cancer.
authors
found
was
better
attributed
lower
consumption
produced
lignocaine.[10]
clearly
endorses
use
non-opioids
management.[11]
no
longer
novel
now
favourite
both
clinicians.[12]
POST-OPERATIVE
ASSESSMENT
TOOLS
Effective
depends
accurate
assessment.
There
various
frequently
tools
such
VAS,
NRS,
verbal
(VRS),
faces
(FPS).
them
uni-dimensional
self-reported
assess
only
intensity.[13]
find
difficulty
describing
complexity
their
single
value
descriptive
words.
subjectivity
thus
limitation,
search
objective
goes
on.
article
changes
pupillary
diameter
were
objectively
mean
showed
incremental
trend
increasing
VAS
correlated
well
VAS.[14]
trajectory
more
precise
tool
measurement
dynamically
accurately,
where
initial
characterised
through
intercept,
whereas
resolution
presented
slope.[15]
advantageous
individualised
focuses
rapid
resolution,
reduction
intensity.
It
noted
since
long
helpful
relieving
suffering
reducing
magnitude
surgical
stress
cost
overuse
but
promote
recovery.[4]
Despite
insight,
routine
scoring
validated
adopted.
Various
Clinically
Aligned
Pain
Assessment
(CAPA)
Activity-Based
Checks
(ABCs)
scale,
8-point
recommended
American
Society,
3-point
activity
Scott
McDonald
already
available.[4,16]
These
mood,
movement,
sleep
control,
side
effects.[17]
PRE-OPERATIVE
PREDICTORS
FOR
ACUTE
AND
CHRONIC
POST-SURGICAL
evidence
improving
strongly
timely
identification,
quantification,
prevention
its
predictors.
Many
multi-centric
studies
identified
characteristics
(young
age,
female
gender,
obesity),
pre-operative
psychology
(anxiety,
depression),
pre-existing
status
[severity,
duration,
disability,
morphine
milligram
equivalent
(MME)
consumption],
wound
size
>10
cm,
predictors
chronic
PSP.[1,2,18,19]
severity.[20]
With
growing
technology
medical
science,
health-related
available
stored
systems,
mobile
applications
wearables,
artificial
intelligence
(AI),
machine
learning
(ML)
boon
availability
sets,
fast
analysis
predictive
algorithms,
software
helps
physician
understanding,
predicting,
managing
also
research.[21–25]
sensitivity
facial
expression-based
AI
detect
NRS
≥4/10
≥7/10
using
nurses
(89.7%
77.5%
versus
44.9%
17.0%,
respectively).[25]
Painchek
smartphone-integrated
automation
AI-based
based
recognition
expression
who
unable
communicate
during
evaluation
beneficial
classifying,
diagnosing,
personalised
patterns
missed
methods.[26,27]
DEVELOPMENT
OF
BETTER
PREDICTION
EVALUATION
MODELS
As
significantly
subjective,
gold
standard
remained
patient-reported
till
now.[28]
Self-reporting
measures
grossly
misses
cognitive
domains
Although
self-reporting
researched
clinically
used,
thoroughly
addressed
limitations.
Therefore,
there
continued
need
further
research
these
aspects.[29]
Such
improve
adapt
develop
validate
sensor-based
Whereas
few
tools,
is,
geriatric
measure,
brief
inventory,
composite
index,
so
on,
multi-dimensions
beyond
assessment,
ample
scope
improve,
shorten,
different
age
groups,
languages,
cultures,
ethnicity.[30]
Technologies
sense,
map
(neuroimaging),
analyse
evaluating
biological,
environmental,
neuronal
pathways
developed.
monitoring
device,
PMD-200
TM
(Medasense
Biometric
Ltd.
Ramat
Gan,
Israel),
uses
Nociception
Level
(NOL)
measure
response
stimulus
displays
scale.
intra-operatively
shown
inhalational
agents,
extubation.[31,32]
However,
efficacy
reliability
still
matter
research,
especially
post-anaesthesia
unit
ward
awake.
Ongoing
(NCT03276260)
enlighten
us,
will
require
validation
from
sub-groups
centres
across
globe.
some
other
nociception-based
devices
technologies
well,
Surgical
Pleth
Index
(GE
Healthcare,
Helsinki,
Finland),[33]
Analgesia
Index,
recently
renamed
High-frequency
Heart
Rate
Variability
(Mdoloris
Medical
Systems,
Loos,
France),
on.[34]
tested
anaesthetised
awake
when
emotions
spatial
factors
contribute
Meanwhile,
innovative
continues
take
place,
certain
days
come,
anaesthesiologist
equipped
predict
intra-operative
outcomes
well.
Annals of critical care,
Journal Year:
2024,
Volume and Issue:
2, P. 159 - 171
Published: April 27, 2024
INTRODUCTION:
Сatheter
ablation
(CA)
is
a
painful
procedure
requiring
an
assessment
of
the
balance
between
nociception
associated
with
surgical
trauma
and
anesthesia
induced
antinociception.
OBJECTIVE:
To
evaluate
effectiveness
monitoring
system
“ANI
Monitor”
for
intensive
care
in
patients
sinus
rhythm
short-term
(<
1
min)
atrial
arrhythmia
(STIAA).
MATERIALS
AND
METHODS:
The
study
group
our
trial
consisted
94
CA
ANI
Monitor.
control
patients,
selected
using
“copy-pair”
method,
standard
(hemodynamic)
monitoring.
A
Numerical
Rating
Scale
(NRS)
was
used
intensity
pain.
At
stage
femoral
vein
catheterization
all
regional
performed,
at
stage,
procedural
sedation
and/or
analgesia
(PSA)
titrated
administration
propofol
fentanyl
(under
Monitor).
Statistical
data
processing
carried
out
Statistica
10.0
SPSS
programs.
RESULTS:
under
PSA,
negative
correlation
found
NRS
ANIm
STIAA
(r
=
−0.37).
threshold
56.0
sensitivity
specificity
detecting
˃
3
were
60
100
%,
respectively,
corresponding
to
ROC
curve
AUC
0.81.
Significant
changes
hemodynamic
reactivity
not
registered.
It
revealed
reduction
(0.04
±
0.02
0.05
0.03
µg/kg/min,
p
<
0.001)
CONCLUSIONS:
Monitor
during
more
effective
harmful
nociceptive
stimuli
compared
use
could
create
conditions
opioid-sparing
anesthesia.