Physio Control LIFEPAK 20, Manual

Page: 69 / 227

Monitoring
3-20 LIFEPAK 20e Defibrillator/Monitor Operating Instructions
CO
2
Display
The following scales are available to display the CO
2
waveform. The LIFEPAK 20e
defibrillator/monitor automatically selects the scale based on the measured EtCO
2
value. To
change the CO
2
scale, outline and select the CO
2
area using the Speed Dial and then select the
desired scale from the scale menu.
• Autoscale (default)
• 0–20 mmHg (0–4 Vol% or kPa)
• 0–50 mmHg (0–7 Vol% or kPa)
• 0–100 mmHg (0–14 Vol% or kPa)
The CO
2
waveform is compressed (displayed at 12.5 mm/sec sweep speed) to provide more data
in the 3.7-second screen. There is a slight delay between when the breath occurs and when it
appears on the screen. Printouts are at 25 mm/sec.
The monitor shows the maximum CO
2
value over the last 20 seconds. If the EtCO
2
values are
increasing, the change can be seen with every breath. However, if the values are continually
decreasing, it will take up to 20 seconds for a lower numerical value to be displayed. Because of
this, the EtCO
2
value may not always match the level of the CO
2
waveform.
CO
2
Alarms
The EtCO
2
monitor provides:
• EtCO
2
high and low alarms (controlled by activating Alarms (refer to "Setting Alarms,"
page 2-19 )).
• FiCO
2
(inspired CO
2
) alarm (controlled by activating Alarms; automatically set to default values
and not adjustable)
• Apnea alarm (automatic and not adjustable)
• Respiration Rate high and low alarms (controlled by activating Alarms (refer to "Setting
Alarms," page 2-19 )).
Note: The apnea alarm occurs when a breath has not been detected for 30 seconds. The
message
ALARM APNEA
appears in the message area along with the time since the last
detected breath.