15-4
The calculation formulas in the above two compensations are as follows:
ATPD: PCO
2
(mmHg)= CO
2
(vol%)× Pamp/100
BTPS: PCO
2
(mmHg)= CO
2
(vol%)×(Pamp-47)/100
In the above formulas, PCO
2
refers to the CO
2
partial pressure, vol% is the percentage of the gas
concentration, and Pamp is the ambient pressure in the unit of mmHg.
WARNING
z Do not use the accessory if the packaging or the internal accessory is damaged.
Return it to the manufacturer.
z “CO2 START UP” and “CO2 WARM UP” displayed on the screen indicate that
the sensor is starting up and warming up. During the warming up, the module
can measure CO2, but the measurement is not standard. After the above
information disappears, the standard measurement can be performed.
z The sidestream sampling line is disposable. It should not be disinfected for reuse
or cross-used by different patients.
z The water trap is used to collect water drops condensed in the sampling airway
and prevent water drops from entering the module. When the collected water
reaches to a certain amount, remove the water to avoid blocking the airway.
z In the long-term use, dust or other substances may lower the air permeability of
the filter material in the water trap and may block the airway. In this situation,
the water trap must be replaced.
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