Chapter 7: ECG
7-2
Veterinary 3 Parameter Advisor
®
Operation Manual
Theory of Operation
Electrical currents influenced by the cardiac impulse flow through the body tissue around the heart. Three or five
electrodes, placed on the skin on opposite sides of the heart, transmit the electrical potentials to circuitry in the
monitor.
The monitor’s ECG circuitry amplifies, filters, and digitizes (converts analog signals to digital signals) the received
electrical potentials. The digitized signals are used to display the ECG waveform and calculate the ECG heart rate.
Using the ECG Parameter
This chapter includes information specific to the ECG parameter. Refer to chapters 4-6 for general step-by-step
monitoring instructions. The remainder of this chapter assumes that the monitor is properly installed and set up.
Attaching the Patient
NOTE! Follow institutional standards when applying ECG electrodes.
NOTE! The ECG cable uses a standard AAMI three-lead or five-lead ECG connector. Use only standard
AAMI three-lead or five-lead ECG wires.
NOTE! The monitor is protected against damage from defibrillator, diathermy, and electrocautery
discharge.
NOTE! Ensure the ECG LEADS PROCESSING setting in the SETUP menu under PARAMETER OPTIONS is
correct for the type of ECG cable being used.
Choose 3-lead or 5-lead ECG processing:
1.
Turn the rotary knob on the monitor to move the cursor. On the main menu at the bottom of the display,
a.
highlight SETUP and push the knob to select.
Highlight PARAMETER OPTIONS and push the knob to access the parameter options submenu.
b.
Highlight ECG LEADS PROCESSING and push the knob to select.
c.
Highlight 3-lead or 5-lead and push the knob to select.
d.
CAUTION! A three-lead ECG cable must be used if 3-Lead processing is selected. A five-lead ECG cable
must be used if 5-Lead processing is selected. Using the incorrect cable for the selected mode
ECG
NIBP
BP2
BP1
TEMP
SPO2
w
2
1
2
100-240AC
0.8A 50-60 Hz
F 1.6A/250V
REPLACE FUSE AS MARKED
RISK OF FIRE
WARNING:
CAUTION
Connect the
ECG cable
Figure 7.2: Connect the ECG Cable
might lead to a floating reference or
additional noise on the ECG signal.
Highlight MAIN or PREVIOUS and push the knob
e.
to select.
Make sure that the alligator clips and banana plugs
2.
on the ECG leads are thoroughly cleaned and dry
before attaching to the patient. If the alligator clip
and the banana plugs are dirty, ECG signal quality
may be compromised.
Connect the ECG cable to the monitor. Align the key
3.
on the monitor’s ECG receptacle with the notch in the
ECG connector and push the connector firmly into
the receptacle.
NOTE! To remove the ECG cable, grip the connector
and pull back firmly. DO NOT pull on the ECG
cable to remove the ECG connector from the
monitor.
