Filter
Top Products
Capnography (CO2)
Welch Allyn 82 Propaq Encore Reference Guide
3. Press mm/s to select either 3.13, 6.25 or 12.5 mm/sec. The default setting is 6.25 mm/
sec. This sweep speed also applies to RESP.
4. Press
MORE to view the CO
2
status window.
5. If either O
2
or N
2
O is being administered to a patient, press GAS COMP to set the proper
gas compensation as listed below. If no other gas is being administered, set GAS
COMPENSATION to OFF. (OFF is the default setting.)
6. Press
RESPONSE to select either NORMAL, SLOW, or FAST.
The FAST setting is recommended where a sudden step change in ETCO
2
is of
concern, such as that induced by an air embolus in certain neurosurgical procedures.
A SLOW response will decrease ETCO
2
false alarms when breath morphology varies
considerably from one breath to the next.
The default setting is NORMAL.
z
7. Set alarm limits for ETCO
2
, INCO
2
, and Breath Rate.
If an inspired value is displayed indicating patient rebreathing (non-zero
IN
CO
2
), check the patient breathing circuit for proper function. Verify the
sensor calibration against room air. If the Propaq continues to display inspired
values, return the sensor to Welch Allyn for service.
Gas Administration Level/GAS
COMP Setting
ETCO
2
or INCO
2
Value
OFF CO
2
value = actual
CO
2
value
O
2
> 50%, No N
2
OCO
2
value = actual CO
2
value x 1.03
N
2
O > 50% CO
2
value = actual CO
2
value x 0.952
If the ETCO
2
value is displayed as + + +, verify calibration against a known
reference gas. If the sensor calibration is not accurate, return it to Welch Allyn
for service.
Response Time Setting Sampling Period Typical Indications for Use
FAST 15 seconds During neuroanesthesia
NORMAL 30 seconds During routine use
SLOW 45 seconds To decrease ET
CO
2
false alarms