Mindray BeneView T8, Operation Manual

Page: 138 / 290

Monitoring Carbon Dioxide
13-8
2. Select either [
Wet
] for BTPS or [
Dry
] for ATPD, depending on which compensation
applies.
For CO
2
, the humidity compensation can be set to [
Wet
] or
[Dry
]:
1. Dry: 100 / %) ( ) (
2 2
amb co
P vol CO mmHg P
× =
2. Wet: 100 / ) 47 ( %) ( ) (
2 2
− × =
amb CO
P vol CO mmHg P
where,
2
CO
P
= partial pressure, %
vol
= CO
2
concentration,
amb
P
= ambient pressure, and
unit is mmHg.
13.4.6 Setting the Apnea Alarm Delay
In the [
CO2 Setup
] menu, select [
Adjust CO2 Limits >>
] → [
Apnea Time
] and then select
the appropriate setting. The monitor will alarm if the patient has stopped breathing for longer
than the preset apnea time.
13.4.7 Choosing a Time Interval for Peak-Picking
For microstream and mainstream CO
2
modules, you can select a time interval for picking the
highest CO
2
as the EtCO
2
and the lowest as the FiCO
2
.
In the [
CO2 Setup
] menu, select [
Max Hold
] and toggle between [
Single Breath
], [
10 s
],
[
20 s
] and [
30 s
].
„ [
Single Breath
]: EtCO
2
and FiCO
2
are calculated for every breath.
„ [
10 s
], [
20 s
] or [
30 s
]: EtCO
2
and FiCO
2
are calculated using 10, 20 or 30 seconds of
data.
13.4.8 Setting up the CO
2
Wave
In the [
CO2 Waveform
] menu, you can:
„ Select [
Wave Type
] and toggle between [
Draw
] and [
Fill
]:
‹ [
Draw
]: The CO
2
wave is displayed as a curved line.
‹
[
Fill
]: The CO
2
wave CO
2
is displayed as a filled area.