Fluke Biomedical MPS450 - Manual (Page 80)

MPS450
Operators Manual
3-6
Simulating Apnea (Respiration Standstill)
Apnea is described as the cessation of breathing. In general there are three types of apnea:
central (often seen in infants, when there is no diaphragm movement and no air flow);
obstructive (where an object, such as food, is lodged in the trachea); and mixed (where
central apnea is followed immediately by obstructive apnea).
The MPS450 offers four apnea simulations that differ from each other only by simulation
length, not by waveform. These four simulations are available as pre-configured, one-
time events (with apnea lasting for a duration of 12, 22, or 32 seconds), plus a continuous
user-controlled apnea.
Action in the Menu-Control Mode
1. Press the top-menu key labeled RESP. If the apnea on/off setting has not been
changed, the LCD screen indicates the default condition with apnea turned off (OFF
APNE).
2. Select APNE to display the LCD screen RESPIRATION APNEA.
3. If the apnea setting has not been changed, the LCD screen references the default
apnea simulation (12 SECONDS). To simulate a one-time event of 12-second apnea,
select RUN. On the LCD screen, ON flashes while the MPS450 counts down and
displays the seconds remaining in the simulation. To repeat the simulation, select
RUN again.
4. For a one-time event of 22-second or 32-second apnea, or for a continuous-apnea
simulation, select PREV or NEXT to scroll to the LCD screen displaying the desired
condition, and select RUN.
5. To terminate a running simulation of apnea at any time (including continuous apnea),
select END.
6. To return to the top menu RESPIRATION, press the ESC key.
Alternatively, in the Numeric-Control Mode, press the number keys for an apnea
condition according to Table 3-5, and select RUN:
Table 3-5. Numeric Codes for Apnea Simulation Settings
Apnea Simulation Setting Numeric Code
APNEA ON CONTINUOUS 150
APNEA OFF 151
APNEA 12 SECONDS 152
APNEA 22 SECONDS 153
APNEA 32 SECONDS 154
Temperature (Adjusting Body Temperature)
All temperatures output by the MPS450 are compatible with Yellow Springs, Inc. (YSI)
Series 400 and 700 probes. The type of probe simulated is based on the type of cable
connected to the MPS450 and/or the input used. (Cables for connection to the 400 or 700
are available directly from Fluke Biomedical.)
The MPS450 simulates four preconfigured body temperatures, which can be applied at
any time while operating the instrument.
The MPS450 simulates four preconfigured temperatures of the human body, accurate to