Especially in the precordial leads, which are close to the heart, QRS morphology can be greatly altered
if an electrode is moved away from its correct location.
ECG Leads Monitored
If you are using
a 3-electrode set
a 5-electrode set
a 6-electrode set
a 10-electrode set
an EASI 5-electrode set
Changing Lead Sets
To change the ECG lead set,
When adding leads: place the additional electrodes as required - the monitor automatically
recognizes the new lead placement.
When removing leads: there are two possibilities - removing the complete chest leads block or
removing individual leads. If you unplug the chest lead block from the trunk cable connector, the
monitor will automatically recognize the new lead placement. Remove individual leads by
removing the electrodes. The monitor will issue a
ECG Lead Fallback
If fallback is configured on and there is a leads off INOP in the primary lead (and in the secondary
lead, if you are using multi-lead monitoring) for longer than 10 seconds, and if another lead is available,
this available lead automatically becomes the primary lead. This is known as lead fallback. When the
Leads Off condition is corrected, the leads are automatically switched back.
This setting can only be changed in Configuration Mode.
ECG Lead Placements
The labels and colors of the ECG electrodes differ according to the standards that apply for your
hospital. The electrode placement illustrations in this chapter use the AAMI labels and colors.
these leads are available:
I, II, III
I, II, III, aVR, aVL, aVF, V and MCL
I, II, III, aVR, aVL, aVF, Va, Vb
I, II, III, aVR, aVL, aVF, V1, V2, V3, V4, V5, V6 RA and LL
I, II, III, aVR, aVL, aVF, V1, V2, V3, V4, V5, V6 I and A
menu and the INOP message will disappear.
6 ECG, Arrhythmia, ST and QT Monitoring
INOP message; select
Resp is measured
RA and LL
RA and LL
RA and LL