Oridion Capnostream 20p, Руководство оператора

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Testing Alarm Settings
80 Portable Bedside Capnograph/Pulse Oximeter

T
O
C
HANGE
A
LARM
L
IMITS
:
1. Open the Alarm Limits screen by selecting the
ALARM LIMITS
button on the Menu bar at the bottom of the
Alarm Review screen.
2. To modify a setting, scroll to the individual limit setting using the control knob. Click the control knob to
select that setting, and then turn the control knob to select a new value. Click the control knob again to set
the new value.
3. To enable caution alarms, click the CAUTION ENABLE button on the screen, using the control knob. The
caution alarm limit values will now become active, and can be changed on this screen in the same manner as
high priority patient (urgent) alarm limits can be changed. The
CAUTION ENABLE button will show
CAUTION DISABLE
when the caution alarms are enabled, and clicking the
CAUTION DISABLE
button
will disable the caution alarms.
4. Use the control knob to select HOME and click the control knob again to return to the Home screen.
Changing the high alarm limit towards the low alarm limit will force the low alarm limit down if necessary, in
order to maintain a difference of at least 5 units between high and low alarm limits. This type of adjustment
causes the low alarm limit to also change in color to make it obvious that it is active. Similarly, if you change
the low alarm limit towards the high alarm limit, the high alarm limit is forced up if necessary, in order to
maintain a difference of at least 5 units between high and low alarm limits. This type of adjustment causes the
high alarm limit to also change in color to make it obvious that it is active.
The alarm will go off if it exceeds the High Limit value or goes below the Low Limit, not if it only reaches the
value.
Alarm limits will reset to their factory default when the power is turned off. To make the changes permanent,
use the Service Mode to change the Institutional Settings for the alarm limits (see
Institutional Defaults on
page 119 ).
Note: When the SpO
2
alarm limit is set below 85%, a message reading SpO
2
LOW ALARM LIMIT: xx will
appear in the header area, indicating the level of the SPO
2
LOW alarm limit.
Testing Alarm Settings
In order to test the
NO BREATH
alarm, establish a display of normal breathing on the device. Once normal
breathing is displayed, remove the sampling line from the patient's mouth to create a no breath situation. The
device should then display a
NO BREATH
alarm.
In order to test the pulse oximetry
SENSOR NOT ON PATIENT
alarm, establish a display of SpO
2
values on
the Monitor. Once SpO
2
values are displayed, remove the sensor from the test subject to create a SENSOR
NOT ON PATIENT
situation. The monitor should then display a
SENSOR NOT ON PATIENT
alarm.
SpO
2
Alarms and SatSeconds
Capnostream uses Nellcor’s SatSeconds technology to help reduce the number and frequency of false SpO
2
alarms.
When monitoring upper and lower alarm limits of oxygen saturation, an audible alarm is triggered when one of
these limits is violated by as little as one percentage point. In traditional alarm management, whenever the
%SpO
2
level crosses the alarm limit, the alarm sounds every time the limit is exceeded.
If such frequent alarms are not desired, they can be prevented by using the SatSeconds technique developed by
Nellcor. Using this technique, upper and lower alarm limits are set in the same way they are set in traditional
alarm management. A SatSeconds limit can also be set, in order to sound an alarm while taking into account not
only the crossing of the %SpO
2
alarm limit, but also the time for which the patient's %SpO
2
reading is above or
below the limit.
The method of calculation is as follows
: