Preparations; Electrode Placement - ZOLL R Series Service Manual

C 10 ECG M
HAPTER
Caution ECG electrodes embedded in OneStep Pacing and Complete resuscitation pads produce
non-standard ECG monitoring lead vectors, designated P1, P2 and P3. While ECG signals
acquired from these leads are appropriate for ECG rhythm assessment and determining
electrical capture during pacing, they should not be used for ECG morphological
evaluations. Attach conventional ECG electrodes for diagnostic purposes.
Note:

Preparations

Proper application and placement of electrodes is essential for high quality ECG monitoring.
Good contact between the electrode and skin minimizes motion artifact and signal interference.
Remove all clothing covering the patient's chest. Dry chest if necessary. If the patient has
excessive chest hair, clip or shave it to ensure proper adhesion of the electrodes.

Electrode Placement

Depending upon local usage, the ECG leads are marked either RA, LA, LL, RL, and V or R, L,
F, N and C. The following table shows the markings and color codes for the different lead sets.
IEC Color
Coding
R/Red Electrode RA/White
L/Yellow
Electrode
F/Green
Electrode
N/Black*
Electrode
C/White*
Electrode
* Not used for 3-lead monitoring
10–2
ONITORING
Note: Under certain clinical circumstances, the R Series heart rate counting system
may respond to narrow, high-amplitude spikes in the ECG signal (e.g., 10 msec
duration, 1 mV peak-to-peak amplitude) leading to miscounting of the patient's heart
rate. Do not rely on heart rate meters if the ECG waveform contains narrow,
high-amplitude spikes. If there is a question about the accuracy of heart rate counting,
verify the patient's heart rate by taking his/her pulse.
AHA Color
Coding
Electrode
LA/Black
Electrode
LL/Red
Electrode
RL/Green*
Electrode
V/Brown*
Electrode
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Placement of Electrodes
Place near patient's right mid-clavicular line, directly below
clavicle.
Place near patient's left mid-clavicular line, directly below
clavicle.
Place between 6th and 7th intercostal space on patient's left
mid-clavicular line.
Place between 6th and 7th intercostal space on patient's right
mid-clavicular line.
Single movable chest electrode.
9650-0904-01 Rev. N