Dräger Medical Narkomed MRI-2, Инструкция оператора, Страница: 132 / 178

13
Breathing Pressure Monitoring
13-8
Part Number: 4116841-001 Narkomed MRI-2 Operator’s Manual Rev: E
• The horizontal dotted line on the waveform and the adjacent marker
on the Y-axis both represent the threshold pressure (apnea) alarm
limit. The horizontal dotted line is always displayed, but the marker on
the Y-axis appears only when the threshold pressure alarm limit is less
than or equal to the top of the scale set by the system. There is a
marker in the illustration above, because the threshold pressure alarm
limit (12 cm H
2
O) is less than the top of the scale (20 cm H
2
O).
• The pressure high alarm limit is denoted by a marker on the Y-axis
only when it is less than or equal to the top of the scale set by the
system. In Figure 13-4, the pressure high alarm limit (35 cm H
2
O) is
greater than the top of the scale (20 cm H
2
O).
When a high alarm limit marker is displayed, its appearance depends on
whether the pressure high alarm limit is less than or equal to the top of
the scale. Figure 13-5 illustrates the difference in appearance. (Note that a
threshold pressure alarm limit marker is also displayed in these
examples.)
Figure 13-5. Breathing Pressure Trace Window with Examples of High Alarm Limit Markers
OP87020
45
23
PRESSURE HIGH ALARM
LIMIT < TOP OF SCALE
50
PRESSURE HIGH ALARM
LIMIT = TOP OF SCALE
SCALE = 0-50 cm H
2
O
STEP-LIKE MARKER HORIZONTAL MARKER
23
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