16-2 Dash™ 3000/4000/5000 2000966-386D
Monitoring Anesthesia Gases
Introduction
Overview
The monitor uses a SAM module to monitor anesthesia gases. The SAM module is an
infrared based multi-gas analyzer. It measures inspired and expired values for patient
gas and calculates respiratory rate.
When all connections are made and the module has warmed up, the CO
2
and GAS
parameter windows display. The display updates every two seconds. There is no
waveform.
002E
803B
The module detects the following gases:
Oxygen (O2)
Carbon dioxide (CO2)
Nitrous oxide (N2O)
Enflurane (ENF)
Halothane (HAL)
Isoflurane (ISO)
Desflurane (DES)
Sevoflurane (SEV)
The monitor can detect a mixture of anesthetic agents. A gas mixture is made up of
two or more anesthetic agents, each greater than 0.30 percent in concentration. A
third gas agent is displayed if its concentration is greater than 0.60 percent.
If two agents are detected, the primary and secondary agents are displayed with N
2
O.
The primary agent is always displayed on the left. The primary agent is defined as the
agent with the greatest inspired value.
If a third agent is detected with a concentration greater than 0.60 percent, the N
2
O
values will be removed to make room for the third agent. You can adjust the control
settings to display the N
2
O values with the primary and secondary agents.
NOTE
Halothane and enflurane are identified and quantified in a mixture with
desflurane if desflurane is less than seven percent.
O2
%
O2 CO2 RR
45
41
0
39
8
I
E
CO2
mmHg
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