Trio™ Operating Instructions 0070-10-0666-01 2 - 29
Operations Parameter Menus
2.4.2 Respiration Monitoring
The Trio utilizes thoracic impedance to measure respiration. This is accomplished by passing
a small electrical signal across the RA and LL (R and F) ECG limb leads. This signal changes
as the patient's chest wall rises and falls during the breath cycle. The change of impedance
between the two (2) electrodes, (due to the thoracic movement), produces a respiratory
waveform on the screen.
2.4.2.1 Setting Up Respiration Measurement
For Respiration monitoring, it is not necessary to use additional electrodes. However, the
proper placement of electrodes is important. Depending upon the medical condition of the
patient it may be necessary to reposition the ECG electrodes to optimize respiratory signal.
Prep the patient’s skin for electrode placement as described in the ECG section of this manual
(See section 2.4.1).
2.4.2.2 Respiration Setup Menu
Accessing the Respiration Menu
To access the RESP SETUP menu, select RESP from the RESP parameter tile using the
Navigator™ Knob. The RESP SETUP menu (FIGURE 2-29) is displayed. Use the Navigator
Knob to adjust settings. To close the menu, select NORMAL SCREEN (from the menu or the
Front Panel Keypad).
FIGURE 2-29 Respiration Setup Menu
Respiration Setup Menu Selections
ALM Allows the user to turn the RESP (Respiration) alarm ON or OFF.
Choose ON to enable the alarm; choose OFF to disable the alarm. If
the alarm is set to OFF, the alarm OFF symbol will display to the
right of RESP on the screen. The RESP alarm is activated when the
respiration rate exceeds set high or low RESP values.
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