Technical Alarm Messages (INOPs)

4 Patient Alarms and INOPs

INOP Message, Indication

Source

What to do

 

 

 

BIS ISOELECTRC EEG

BIS

No discernible EEG activity is detected for longer than one

 

 

minute.

 

 

Check the patient. Check that the electrodes are properly

 

 

connected.

BIS LEAD OFF

BIS

One or more electrodes have no skin contact and therefore

INOP tone may sound

 

impedances cannot be measured. Check the sensor montage

 

and press the electrode pads firmly.

 

 

 

 

If this INOP persists, replace the sensor(s) in question, using

 

 

correct skin preparation.

BIS OVERCURRENT

BIS

Unplug and replug the BIS module or, f or the MP20/MP30,

INOP tone

 

disconnect and reconnect the BISx from the Interface board. If

 

the INOP persists, contact your service personnel.

 

 

BIS SENSOR DISCONN

BIS

The sensor is not properly connected to the patient interface

INOP tone

 

cable (PIC) and/or the PIC is not properly connected to the

 

DSC or BISx, or the sensor or PIC or DSC or BISx may be

 

 

 

 

faulty.

 

 

Check all the connections.

 

 

Disconnect and reconnect the sensor, PIC, DSC, BISx.

 

 

If the INOP persists, replace the sensor.

 

 

If the INOP persists, replace PIC. If INOP persists, contact

 

 

your service personnel.

 

 

Silencing this INOP switches the measurement off.

BIS SENSOR INCOMPAT

BIS

Unsupported sensor connected or sensor type unknown or not

INOP tone

 

supported by your software revision. Replace the sensor, using

 

only Philips supported sensors.

 

 

BIS SENSOR MALFUNC

BIS

Malfunction in the sensor hardware, most often caused by

INOP tone

 

liquids permeating into the connectors OR patient interface

 

cable (PIC) or DSC or BISx may be faulty.

 

 

 

 

Replace the sensor. Manually initiate a Cyclic Impedance

 

 

Check. Make sure all electrodes pass the test. Make sure that

 

 

the both sides of the PIC connector (between PIC and sensor)

 

 

are dry. If you are not sure that the connector is dry, replace the

 

 

PIC until it has dried. If this INOP persists, contact your

 

 

service personnel.

BIS SENSOR USAGE

BIS

Excessive sensor usage. Replace sensor.

INOP tone

 

A Cyclic Impedance Check will start automatically.

 

 

BIS SQI < 15% (INOP tone)

BIS

If the signal quality is below 50%, BIS numerics cannot be

OR

 

reliably derived.

 

If the signal quality is below 15%, no BIS numerics can be

BIS SQI < 50% (no INOP tone)

 

 

derived.

 

 

 

 

This may occur as a result of artifacts such as those generated

 

 

from motion or the presence of electrocautery devices. Make

 

 

sure the sensor is properly attached to the patient. Manually

 

 

initiate a Cyclic Impedance Check. Make sure all electrodes

 

 

pass the test. Make sure the patient is completely relaxed (even

 

 

small motions of the facial muscles affect the signal quality).

BIS UNPLUGGED

BIS

Plug in the BIS module. Silencing this INOP switches off the

INOP tone

 

measurement.

 

 

BISx DISCONNECTED

BIS

The BISx is not connected to the BIS module or the BIS

INOP tone

 

interface board. Silencing this INOP switches the measurement

 

off.

 

 

 

 

 

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Philips MP60/70/80/90, MP20/30 BIS Isoelectrc EEG, BIS Lead OFF, BIS Overcurrent, BIS Sensor Disconn, BIS Sensor Incompat
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