Accuracy of the Instantaneous Breathing and Heart Rates Estimated by Smartphone Inertial Units
Sensors,
Journal Year:
2025,
Volume and Issue:
25(4), P. 1094 - 1094
Published: Feb. 12, 2025
Seismocardiography
(SCG)
and
Gyrocardiography
(GCG)
use
lightweight,
miniaturized
accelerometers
gyroscopes
to
record,
respectively,
cardiac-induced
linear
accelerations
angular
velocities
of
the
chest
wall.
These
inertial
sensors
are
also
sensitive
thoracic
movements
with
respiration,
which
cause
baseline
wanderings
in
SCG
GCG
signals.
Nowadays,
widely
integrated
into
smartphones,
thus
increasing
potential
as
cardiorespiratory
monitoring
tools.
This
study
investigates
accuracy
smartphone
simultaneously
measuring
instantaneous
heart
rates
breathing
rates.
Smartphone-derived
signals
were
acquired
from
10
healthy
subjects
at
rest.
The
performances
heartbeats
respiratory
acts
detection,
well
inter-beat
intervals
(IBIs)
inter-breath
(IBrIs)
estimation,
evaluated
for
both
via
comparison
simultaneous
electrocardiography
respiration
belt
Heartbeats
detected
a
sensitivity
positive
predictive
value
(PPV)
89.3%
93.3%
97.3%
97.9%
Moreover,
IBIs
measurements
reported
strong
relationships
(R2
>
0.999),
non-significant
biases,
Bland-Altman
limits
agreement
(LoA)
±7.33
ms
±5.22
GCG.
On
other
hand,
detection
scored
PPV
95.6%
94.7%
95.7%
92.0%
Furthermore,
high
R2
values
(0.976
0.968,
respectively),
an
LoA
±0.558
s
±0.749
achieved
IBrIs
estimates.
results
this
confirm
that
can
provide
accurate
rate
without
need
additional
devices.
Language: Английский
Leveraging IoT Devices for Atrial Fibrillation Detection: A Comprehensive Study of AI Techniques
Alicia Pedrosa-Rodriguez,
No information about this author
Carmen Cámara,
No information about this author
Pedro Peris‐Lopez
No information about this author
et al.
Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(19), P. 8945 - 8945
Published: Oct. 4, 2024
Internet
of
Things
(IoT)
devices
play
a
crucial
role
in
the
real-time
acquisition
photoplethysmography
(PPG)
signals,
facilitating
seamless
data
transmission
to
cloud-based
platforms
for
analysis.
Atrial
fibrillation
(AF),
affecting
approximately
1–2%
global
population,
requires
accurate
detection
methods
due
its
prevalence
and
health
impact.
This
study
employs
IoT
capture
PPG
signals
implements
comprehensive
preprocessing
steps,
including
windowing,
filtering,
artifact
removal,
extract
relevant
features
classification.
We
explored
broad
range
machine
learning
(ML)
deep
(DL)
approaches.
Our
results
demonstrate
superior
performance,
achieving
an
accuracy
97.7%,
surpassing
state-of-the-art
methods,
those
with
FDA
clearance.
Key
strengths
our
proposal
include
use
shortened
15-second
traces
validation
using
publicly
available
datasets.
research
advances
design
cost-effective
AF
by
leveraging
diverse
ML
DL
techniques
enhance
classification
robustness.
Language: Английский