ZOLL M Series Defibrillator Rev YH - Manual (Page 57)

9-1
SECTION 9
ECG MONITORING
Introduction
The M Series products can be used for either short-term
or long-term ECG monitoring.
M Series products have built-in protection circuitry to
prevent damage to their ECG monitoring circuits during
defibrillation attempts. Monitoring electrodes may
become polarized during defibrillator discharge, causing
the ECG waveform to briefly go off screen. High quality
silver/silver chloride (Ag/AgCl) electrodes minimize this
effect, and circuitry in the instrument will return the trace
to the monitor display within a few seconds.
ECG monitoring may be accomplished through an ECG
patient cable, Multi-Function Pads or through standard
defibrillation paddles. Use of an ECG patient cable and
electrodes is required, however, to monitor during
pacing.
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.
Electrode Placement
Depending upon local usage, the ECG leads are marked
either LA,RA, LL, RL, and V or L, R, F, N and C.
Markings and color codes for the different lead sets are
shown in the chart.
During electrosurgery, observe the following guidelines
to minimize ESU interference and provide maximum
user and patient safety:
• Keep all patient monitoring cables away from earth ground,
ESU knives and ESU return wires.
• Use electrosurgical grounding pads with the largest practical
contact area, and
• Always assure proper application of the electrosurgical
return electrode to the patient.
ECG leads are a defibrillation protected Type CF patient connection.
CAUTION
• To avoid electrosurgery burns at monitoring sites, ensure
proper connection of the electrosurgery return circuit so that
the return paths cannot be made through monitoring
electrodes or probes.
IEC Color
Coding AHA Color
Coding Placement of Electrodes
R/Red
Electrode RA/White
Electrode Place near right mid-
clavicular line, directly
below clavicle.
L/Yellow
Electrode LA/Black
Electrode Place near left mid-
clavicular line, directly
below clavicle.
F/Green
Electrode LL/Red
Electrode Place between 6th and 7th
intercostal space on left
mid-clavicular line.
N/Black
Electrode RL/Green
Electrode Place between 6th and 7th
intercostal space on right
mid-clavicular line.
C/White
Electrode V/Brown
Electrode Single movable chest
electrode.
RA LA
RL LL
V