10 - 6 BeneVision N22/N19 Patient Monitor Operator’s Manual
• For the 5-leadwire and 6-leadwire placement, place the precordial electrode according to the
physician's preference.
10.4.4.4 10-leadwire Electrode Placement
12-lead ECG uses 10 electrodes, which are placed on the patient’s four limbs
and chest. The limb electrodes should be placed on the soft skin and the chest
electrodes placed according to the physician’s preference. The picture at the
right shows the conventional 10-leadwire electrode placement.
10.4.4.5 Lead Placement for Surgical Patients
The surgical site should be taken into consideration when placing electrodes on a surgical patient. For example,
for open-chest surgery, the chest electrodes can be placed on the lateral chest or back. To reduce artifacts and
interference from electrosurgical units, you can place the limb electrodes close to the shoulders and lower
abdomen and the chest electrodes on the left side of the mid-chest. Do not place the electrodes on the upper
arm. Otherwise, the ECG waveform will be very small.
• To reduce the hazard of burns during use of electrosurgical units (ESU), the ECG electrodes should
not be located between the surgical site and the ESU return electrode.
• Never entangle the ESU cable and the ECG cable together.
• When using ESU, never place ECG electrodes near to the grounding plate of the ESU, as this can
cause a lot of interference on the ECG signal.
10.4.5 Selecting the ECG Standard
Select the ECG standard according to the leadwires you are using. To select the ECG standard, follow this
procedure:
1. Select the Main Menu quick key → turn to the third page → from the System column select Maintenance
→ input the required password → select Ok.
2. Select the Module tab → ECG tab.
3. Set ECG Standard to AHA or IEC.
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