Accurate,
Reliable & Absolute
Unique 4 wavelength, LASER-SIGHT Optical Technology and patented algorithm deliver
accurate, reliable, absolute measurements.
Spot Check
Instantly evaluate a patient’s cerebral oxygen saturation status. Ideal
for identifying compromised patients in a variety of clinical settings.
Continuous Monitoring
Optimal for use in perioperative settings for continuous,
non-invasive measurement of cerebral oxygen saturation
status.
Catastrophic Event Avoidance
Observe and intervene to reverse desaturation events
as they occur.
Enhanced Response Time
Instantaneous feedback enables swift response times.
Data is updated every 2 seconds.
Extensive Clinical Utility
Delivers accurate measurements over a wide variety
of perfusion conditions including low and zero perfusion
states. Measurements are not affected by patient temperature.
Improved Workflow
Because it’s absolute, there is no need for a
pre-induction baseline reading. Monitoring can begin
at any time.
Absolute Confidence
With FORE-SIGHT, you can be confident that measurements
are accurate and clinically relevant. |
 |
The non-invasive FORE-SIGHT™ Cerebral
Oximeter offers clinicians many advantages:
 ABSOLUTE
CEREBRAL OXYGEN SATURATION VALUES
The FORE-SIGHT™ Cerebral Oximeter provides clinicians
with an absolute indication of cerebral tissue oxygen
saturation. This absolute value, displayed on the monitor
and updated every few seconds, gives clinicians an
immediate, clear indication of a patient's cerebral
oxygen saturation status.
The ability to view absolute
cerebral tissue oxygen saturation (SctO2) values has
several advantages. Clinically relevant data regarding
the status of the patient is available to the user
within a few seconds of applying the sensor. Absolute
readings also provide the clinician with flexibility
in initiating SctO2 monitoring - monitoring can begin
before or during a procedure, with either situation
giving the user reliable, relevant results. With the
ability to view absolute values, the patient's status
can be assessed pre-operatively and decisions regarding
clinical interventions can be made from the start of
the procedure. Absolute values also allow the clinician
to assess the patient's saturation values simply by
viewing a single, accurate measurement on the monitor.
EXCEPTIONAL
ACCURACY
The FORE-SIGHT™ Cerebral Oximeter system design
incorporates several features for outstanding data
accuracy.
Innovative, Patented Data Analysis Algorithm – accounts
for optical characteristics of background tissue in
determining cerebral tissue oxygen saturation values
to minimize patient dependent variables.
Novel Patient
Sensor Design –minimizes interference
from tissues outside the brain, when combined with
our patented data analysis algorithm, resulting in
exceptional measurement accuracy.
Absolute measurements
obtained using the FORE-SIGHT™ Cerebral
Oximeter have been confirmed via comparisons with invasive "gold
standard" (co-oximetry of arterial and jugular
bulb blood samples) measurements. In our most recent
validation study conducted at Duke University, the
CAS cerebral oximeter determined SctO2, showed a strong
correlation with the gold standard SctO2 over a wide
spectrum of SctO2 values (50-100%). The bias and precision
(1 standard deviation) for the CAS cerebral oximeter
SctO2, compared to gold standard SctO2, was 0.07 ± 3.69.
This result demonstrates a very high level of accuracy
when compared with "gold standard" results
across a very wide spectrum of SctO2 values.
REAL-TIME
DATA DISPLAY
Approximately 17-23% of people undergoing cardiopulmonary
bypass surgery suffer from cerebral venous oxygen desaturation,
resulting in compromised cognitive outcomes.1 Continuous
oxygen delivery is critical for the brain, which is
among the most susceptible organs to oxygen deprivation.5
After about ten seconds of brain ischemia, loss of
consciousness will occur. After about 20 seconds, electrical
activity in the brain will stop. In just a few minutes,
a person experiencing brain ischemia will begin to
sustain irreversible brain damage.2 If cerebral tissue
oxygen de-saturation can be detected before it reaches
a critical point, there is an opportunity for interventions
to occur to minimize or prevent permanent damage.
The
FORE-SIGHT™ Cerebral Oximeter was designed
to monitor cerebral tissue oxygen saturation values
and give clinicians an opportunity to intervene before
damage to the brain occurs.
The FORE-SIGHT™ Cerebral
Oximeter works by projecting harmless near infra-red
light through the scalp and skull and into the brain
via a disposable sensor on the patient's forehead.
The device measures the light that is returned to detectors
on the sensor and analyses this information utilizing
patented algorithms to determine absolute cerebral
tissue oxygen saturation levels.
The FORE-SIGHT™ Cerebral
Oximeter operates based on the principle that blood
contains haemoglobin in two primary forms, oxygenated
haemoglobin (HbO2) and de-oxygenated haemoglobin (Hb).
These two forms of haemoglobin absorb light in different,
measurable ways. Oxygen saturation levels are found
by determining the ratio of oxygenated haemoglobin
to total haemoglobin at the microvascular level (arterioles,
venules and capillaries) interrogated by light from
the oximeter sensor. Cerebral tissue oxygen saturation
is a mixed oxygen saturation parameter and reflects
a proportional mix of arterial (~30%) and venous (~70%)
blood in brain tissue. This proportional mix was based
on results reported from Positron Emission Tomography
(PET) scan studies on the brain. 3
ADVANCED
OPTICS AND INNOVATIVE DATA ANALYSIS ALGORITHM
The FORE-SIGHT™ Cerebral Oximeter utilizes advanced
optics and an innovative data analysis algorithm for
superb data accuracy. The FORE-SIGHT™ Cerebral
Oximeter incorporates CAS Medical's unique LASER-SIGHT
technology consisting of a laser system that produces
four specific wavelengths of light each having a very
narrow spectral bandwidth of approximately one nanometer.
These four highly precise wavelengths, when utilized
in conjunction with our patented data analysis algorithm,
resolve for oxy- and de-oxy haemoglobin levels to calculate
SctO2, while accounting for background tissue light
absorption and scattering interference. The net effect
is minimized patient-dependent variability resulting
in exceptional data accuracy and absolute data measurements.
|
