4 Patient Alarms and INOPs
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NMT INOPs
Spiro Patient Cat. Mismatch of patient size configured in the host monitor and sensor type plugged into the module.
Check the instructions on selecting the correct sensor in the chapter on “Spirometry”.
Spiro Purge Failed The purge operation could not be completed successfully. Check for kinked sensor tubings, hard
occlusions and make sure that the pump is running and all valves are switching.
Spiro Purging A purge operation is in progress - no data update on the screen. Wait until purge is complete.
Spiro Unkn. Sensor An unknown sensor ID code was detected. Use only the sensors listed in the “Accessories” chapter.
Spiro Upgrade The module is running a firmware upgrade. Wait until upgrade is completed before resuming
monitoring.
INOP Message, Indication What to do
INOP Message, Indication Explanation
NMT Alarm Suppress NMT alarms are suppressed until the TOF count reaches zero for the first time.
NMT Cable Disconn
INOP tone
No patient cable is connected to the NMT measurement module. Silencing this INOP switches the
NMT measurement off.
NMT Cable Unknown
INOP tone
The patient cable connected to the NMT module is not supported or cannot be identified. Replace it
with a supported cable.
NMT Cal Failed The NMT calibration cycle failed. Check that the sensor and the electrodes are placed properly, then
start another calibration. Ensure that patient's arm is kept still before and during the calibration cycle.
If calibration fails again, replace the patient cable. If INOP persists, contact your service personnel.
NMT Cal Running An NMT calibration is running. Wait until the calibration is complete.
NMT Cannot Measure
INOP tone
NMT is unable to reliably derive measurement values. Check that the sensor and the electrodes are
placed properly and start another measurement. If this INOP persists, try another patient cable.
NMT Equip Malfunct
INOP tone
There is a problem with the NMT hardware. Unplug the NMT measurement module then plug it in
again. If the INOP persists contact your service personnel.
NMT Impedance High The impedance of the NMT stimulation electrodes has exceeded the allowed limit. Check that the
electrodes are placed properly, have firm skin contact and have not dried out.
NMT Incompatible
INOP tone
This version of the NMT measurement module is not supported, or the module firmware is
incomplete and needs to be upgraded. Contact your service personnel.
NMT Lead Off
INOP tone
One or both NMT stimulation electrodes have become detached from the patient. Check that both
electrodes have firm skin contact, that the electrodes are placed properly and that the lead wires are
connected.
NMT Neo Patient?
INOP tone
The NMT measurement does not support neonatal patients. Check the patient category.
NMT Noisy Signal
INOP tone
The NMT signal is too noisy to derive measurement values reliably. If electrosurgery is currently being
used, repeat the NMT measurement after it has stopped.
NMT Overcurrent
INOP tone
The current through the NMT stimulation electrodes is too high. Check that that the patient cable is
not visibly damaged. Disconnect and reconnect the patient cable. If this INOP persists, replace the
cable and/or module.
NMT Overrange The signal from the acceleration sensor is out of the measurement range. Check that the acceleration
sensor is positioned properly. If this INOP persists, try another patient cable.
NMT Sensor Malfunc
INOP tone
There is a problem with the acceleration sensor of the NMT patient cable. Disconnect and reconnect
the patient cable. If this INOP persists, replace the cable.
NMT Upgrade
INOP tone
An NMT module firmware upgrade is in progress. NMT monitoring is currently not possible. Wait
until the upgrade has completed and this INOP is no longer displayed. Do not unplug the module or
switch off power.
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