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Patient Monitor User Manual
19.3.1.2 Measurement Steps
1.
Fix the water trap to the water trap holder on the left side of the monitor, confirm it is well
fixed.
2.
Connect the sampling cannula or the sampling line to the water trap.
3.
Set Work Mode to Measure .
4.
For intubated patients, an airway adapter is required. For non-intubated patients, place the
nasal cannula or the sampling mask onto the patient.
1
The water trap collects water drops condensed in the sampling line and therefore
prevents them from entering the module. If the water trap is nearly filled, you should
replace it to avoid blocking the airway.
2
When replacing the water trap or suspecting the measurement value, please check if
the O-rings of the water trap holder are normal and well installed. If the O-rings get
damaged or loose, contact EDAN's service staff.
3
To prevent the module from abnormal work, please ensure the water trap detection
button is not mistakenly touched.
Based on a sample gas temperature of 37 ° C, a room temperature of 23 ° C and
4
sample relative humidity of 100%, the water trap will be filled after approximately 60
hours with the flowrate of 150 ml/min. In clinical practice, the water trap can be used
for a longer time before it is filled. It is recommended to replace the water trap once
every month.
5
Please replace and discard the water trap when blocking. Don't reuse it, otherwise
the reading is not accurate and even the device may be damaged.
NOTE:
To avoid patient cross infection, do not connect the exhaust tube to the ventilator circuit.
If the sampled gas is returned to the breathing system, always use the bacterial filter of
the sample gas return kit.
19.3.1.3 MAC Calculation
The MAC value is calculated and displayed by using end-tidal (Et) gas concentrations according
to the following formula:
EtAA1 is the concentration of the main anesthetic gas at the end of the breath.
EtAA2 is the concentration of the secondary anesthetic gas at the end of the breath.
EtN
O is N
O concentration at the end of the breath.
2
2
MAC
is the MAC
standard1
CAUTION
value of the main anesthetic gas.
standard
- 174 -
Monitoring AG
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