Inspiratory Time cont.
Once the chest is filling normally, raise the
FLOW RATE
up to a reasonable
Inspiratory Time
.
3. If the
Inspiratory Time
exceeds 3 seconds, the
ALARM
will sound. This may be
due to the
Flow Rate being too low
, but is usually caused by a leak in the system.
Most of the time the problem will be a leaking endotracheal tube cuff. This can
almost always be detected by carefully listening for a leak during inhalation.
DISPLAYING TIDAL VOLUME
Tidal Volume
can be displayed instead of
Minute Volume Per Kilogram
when in
Normal
and
LAB
MODE
. This option is always available by pressing
WEIGHT UP
while the
SET / RUN
switch is on
RUN
. This option can also be initiated upon start-up .
In order to have the ADS 2000 display the
Tidal Volume
, press the
Flow Rate
up
button while turning the ADS 2000,
ON
.
To exit this mode, press
WEIGHT DOWN
while the
SET / RUN
switch is on
RUN
or
turn the ADS 2000
OFF
and restart the unit.
UNDERSTANDING FLOW RATE
The
Flow Rate
displayed on the ADS 2000 is an instantaneous value, i.e. if the ADS
2000 was set to 24 LPM and if the unit were to have an inspiratory time of 1 minute,
then 24 liters of gas would have been used. In reality, the ADS 2000 only allows gas to
flow when a breath is being delivered. In order to determine the "Actual
FLOW RATE
" a
simple calculation can be performed.
This calculation is as follows:
F
ave. = (
F
ins x
T
on x
B
) / 60
Where:
F
ave.= Actual Flow Rate
F
ins.= Flow Rate on LCD Display
T
on= Inspiratory Time
B
= Actual Breaths Per Minute
ADS 2000
Engler Engineering Corporation
17
Summary of Contents for ADS 2000
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