GE Medical Systems MAC 1200, Operator'S Manual, Page: 106 / 180

8-4 MAC 1200 Revision B
2012250-022
Pacemaker Patients / Recording During Defibrillation: ECG Recording During Defibrillation
ECG Recording During Defibrillation
The patient signal input is defibrillation-proof so it is not necessary to
remove the ECG electrodes before defibrillating the patient. However,
when using stainless steel or silver electrodes, the defibrillator discharge
current may cause complete polarization at the electrode/skin interface.
This condition may prevent ECG signal acquisition for several minutes.
With silver/silver chloride electrodes, this will not happen.
Set the MAC 1200 to 6 Lead mode when you may have to defibrillate the
patient while recording the ECG, and disable the anti-drift system which
would cause a 2 second signal delay (
“6 Lead Mode” on page 9-9 for
details).
When using other electrodes, disconnect the patient cable from the
recorder while defibrillating the patient.
:$51,1*
EQUIPMENT DAMAGE — For reasons of patient safety,
use only the original GEMS IT patient cable. Before
connecting the cable to the de-vice, check it for signs of
mechanical damage. Do not use a damaged cable.
PATIENT HAZARD, DELAYED ECG DISPLAY — Use
silver/silver chloride electrodes for ECG signal
acquisition, if the patient may have to be defibrillated.
SHOCK HAZARD — During defibrillation, do not touch
the patient, the electrodes or the leadwires.
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Observe the defibrillator safety information.