2.2 ECG Monitoring
84
a) b)
Figure 2-9. ECG electrode application scheme
Gently squeeze the flaps of the colored patient cable pins and place them on the electrodes in
accordance with the selected application pattern. Make sure the clothespins are securely con-
nected to the electrodes by gently pulling on the cable wires.
After connecting the patient cable, ALWAYS make sure that all leads are
applied to the patient and do not touch other conductive parts or ground.
During long-term application of the electrodes at the patient, the effect of polarization of the
electrodes may occur, leading to the appearance of a constant potential between the elec-
trodes. Its level depends on:
material of the electrode surface;
state of the electrode surface;
properties of the electrode conductive medium;
skin cleanliness;
exposure of the patient to electric currents and fields, including electrical stimulation,
defibrillator or tissue impedance studies.
The magnitude of the polarization potential even at high-quality electrodes can reach tens and
even hundreds of millivolts. Excessive polarization of the electrodes can result in problems such
as saturation of amplifiers (overload, baseline drift), high-frequency noise on the ECG, and re-
duced efficiency of ECG filtering.
The ECG channel of the device ensures normal operation with a polarization potential of up to
±300 mV on any of the electrodes.
Summary of Contents for MPR6-03
Page 1: ...Patient Monitor MPR6 03 User Manual RM 501 01 000 01 01 UM Version 7 05 2020 ...
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