Pronk Technologies SimCube, Руководство оператора

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Notes:
1. These results were obtained with SimCube
1.5 software. We are constantly improving the
product so future software versions may give
slightly different results.
2. These results represent data taken from
specific models of these manufacturer's
products. We normally expect a given
manufacturer's results to be pretty consistent
across their product line, but different models
and even different software revisions may give
different results. For example an HP
OmniCare with software E.0.1 reads adult
mode diastolic about 10mmHg lower than a
HP Merlin with software 17.52.
3. The readings shown are actual random
samples, but they do not necessarily reflect
worst case.
4. MDE = Escort II SW 4.2.0, HP = Merlin SW
17.52, Critikon = Vitalnet 2200, Datascope =
Accutorr 3, CIS = 506DXNT
Optimizing Your Simulations
The following techniques will help you obtain
the best possible simulation results.
1. Cuff Size Selection. Many vendors are
immune to variations in cuff size, but some are
not. For example we find that some Datascope
Accutorr monitors produce systolic values
about 2mmHg higher and diastolic values
about 6mmHg higher with a 400ml cuff volume
rather than a 200ml cuff volume, while some
Critikon monitors show about a 6mmHg drop
in systolic values when changing to the 400ml
cuff volume. We recommend using something
close to a 400ml cuff volume for adult mode
simulation. This can be achieved by wrapping
an adult cuff on itself to form a cylinder
approximately 3 inches in diameter. If you
want to quantify the volume of a rolled cuff you
can do this by injecting a measured amount of
air into an unrolled, empty cuff using a syringe
and a check valve. Once you have injected
the desired amount of air, roll the cuff tightly.
SimCube adult mode simulation will normally
work with a broad range of test volumes, but
with smaller test volumes you may see more
vendor to vendor reading differences.
2. Be prepared to throw out the first reading.
We find that some vendors sometimes produce
a first reading that is substantially different than
later readings.
3. Take an average of several readings. We
suggest using a minimum of 3 to 5 readings.
4. Make sure there are no leaks. You can
usually see leaks just by watching the SimCube
manometer during the reading. On step down
systems the cuff pressure may normally drop a
bit during the first few steps, but after a few
steps it should be flat or even rise slightly during
the step. This is because the air in the cuff is
cooled by the rapid step deflation and warms up
again during the step holding period causing
the pressure to rise slightly. A leak on a step
down system will appear as drop in pressure on
all steps. Bleed down systems should normally
bleed at about 2 to 6mmHg per second. A leak
on a bleed down system will appear as a faster
than normal bleed rate. Since the SimCube's
NIBP simulation creates pulses which are
several mmHg in size it is easiest to check for
leaks with the SimCube in manometer mode.
Be sure to watch for leaks on the SimCube's
manometer rather than the monitor's cuff
pressure display as the SimCube has a much
faster sample rate and display update rate than
most NIBP monitors.
5. Make sure the monitor is in calibration.
On monitors with quickly updating cuff pressure
displays you can do a rough cal check by simply
placing the SimCube on top of the monitor,
placing the SimCube in manometer mode, and
starting a reading. The two pressure gauges
should track tightly, although the monitor's
display may be noticeably delayed. On some
monitors, however, the displayed pressure may
represent the intended pressure for the
pressure step rather than the actual pressure.
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