Alert-it Care Systems P139AA User manual

Guardian Instruction
Manual
Versions covered by this document
139AA Wired Guardian Bedside Monitor (inc sound): English
139AAB
Wired Guardian Bedside Monitor (inc sound & radio trigger)
139AB Wired Guardian Bedside Monitor (inc sound): French
139BA Radio Guardian Bedside Monitor (inc sound): English
139BB Radio Guardian Bedside Monitor (inc sound): French
P139 Guardian Multifunction Monitor
UH1075
Alert-it CareAlarms, Atherstone House, Merry Lees Industrial Estate, LE9
9FE
0845 2179951, www.alert-it.co.uk, [email protected] Made in the
UK

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P139 GUARDIAN MONITOR INSTRUCTIONS

This symbol indicates there are warnings and precautions associated with the use
of this equipment that should be carefully read and understood before using the
equipment
!
This symbol indicates where a Patient Applied part is connected, for which it is
important to follow these instructions carefully
Safety Instructions and Warnings
1. Ensure the voltage & current rating of remote signalling equipment (Nurse Call etc) does not
exceed the maximum allowed (50v/100mA)
2. Ensure that the senor cable is routed and secured to avoid the risk of entanglement or stran-
gulation.
3. Only the recommended power supply shall be used as it is certified to provide two means of
patient protection to EN60601-1
4. Ensure the power cable is routed to avoid a trip hazard
5. Regularly check the power supplies for damage and potential shock risks
6. Clean and disinfect each item regularly in accordance with information on page 7
7. Ensure, by testing, that the alarm is annunciated at the carer's location(s)
8. Regularly sensors test as defined herein
9. Use only the power supply and batteries recommended
10.Operate power supply and charge pager away from direct heat and uncovered.
11.As with all medical electronic equipment there is potential for the equipment to interfere with
or be effected by interference from other electrical or electronic devices. For this reason
avoid placing the monitor, sensor or connecting cable in close proximity to sensitive electron-
ic devices or devices which produce strong electromagnetic fields such as radio transmitters,
mobile phones or power cables.
12.Only use the monitor with accessories approved for use with this product and only in accord-
ance with instructions.
13.If the equipment is modified in any way, appropriate inspection and testing must be conduct-
ed to ensure continued safe use of the equipment.
14.The carer must conduct a risk assessment to determine if the level of reliability offered by
the monitor is sufficient or if additional monitoring is needed. Contact the manufacture for
assistance with Risk Evaluation Tools.
15.Additional levels of mechanical protection may be needed for some patient disorders. Con-
tact the manufacturers for advice
16.Some accessories are fitted with small screws and have plastic bags. Ensure these do not
come into the possession of vulnerable patients who might choke on them
17.Any sensor over the mattress (Bed Vacation or Incontinence) has the potential to cause
pressure sores . The carer must assess this risk and monitor the use of these products
18.Any sensor over the mattress could pose a fire hazard if in contact with a smouldering ciga-
rette.

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P139 GUARDIAN MONITOR INSTRUCTIONS
Contents
DISPLAY & CONTROLS...........................................................................................................................................2
Overview..............................................................................................................................................................2
POWER Control...................................................................................................................................................3
MONITOR SCREEN............................................................................................................................................3
LINE1: MONITOR ACTIVITY........................................................................................................................3
LINE2: STATUS INFORMATION..................................................................................................................3
ALARM ACTIVATING & RESET.........................................................................................................................3
SNOOZE..............................................................................................................................................................3
Radio Transmitter option (P139Bxx)..........................................................................................................................4
Alarm Receiver Option (P139xxB).............................................................................................................................4
MONITOR FUNCTIONS AND DETECTION OF SYMPTOMS AND CONDITIONS..................................................4
SHALLOW BODY MOVEMENTS........................................................................................................................4
Bed Movement Sensor Installation................................................................................................................4
SHALLOW MOVEMENT MINIMUM..............................................................................................................5
SHALLOW MOVEMENT DELAY..................................................................................................................5
SHALLOW MOVEMENT MAXIMUM ALARM...............................................................................................5
SHALLOW MOVEMENT ADJUSTMENT......................................................................................................5
RESET and SUSPEND SHALLOW MOVEMENT MONITORING................................................................6
SHALLOW MOVEMENT MAGNIFICATION..................................................................................................6
ROUTINE TESTING SHALLOW MOVEMENT DETECTION........................................................................6
BODY SPASM MOVEMENT MONITORING.......................................................................................................6
SPASM ALARM.............................................................................................................................................6
SPASM DELAY.............................................................................................................................................6
SPASM RATE SETTING...............................................................................................................................7
RESET SPASM MOVEMENT MONITORING...............................................................................................7
SPASM MAGNIFICATION SETTING............................................................................................................7
ROUTINE TESTING OF SPASM MONITORING.........................................................................................7
TRANSIENT SOUND ALARM.............................................................................................................................7
SOUND DELAY TIME..................................................................................................................................8
SOUND MAGNIFICATION............................................................................................................................8
SOUND RATE...............................................................................................................................................8
RESET SOUND MONITORING....................................................................................................................8
ROUTINE TESTING OF SOUND MONITORING.........................................................................................8
MOISTURE ALARM (A PATIENT CONNECTED SENSOR).............................................................................8
MOISTURE SENSOR FAULT DETECTION.................................................................................................9
MOISTURE CONDUCTIVITY SETTING.............................................................................................................9
BED OCCUPANCY.......................................................................................................................................9
SENSOR CONNECTION..............................................................................................................................9
OPERATION OF ALARM............................................................................................................................10
BED OCCUPANCY ALARM SETTING.......................................................................................................10
RESET AND SUSPENDING THE BED VACATION MONITORING...........................................................10
EXTERNAL ALARM.................................................................................................................................................10
AUTO-TESTING OF SENSORS.............................................................................................................................10
REMOTE RESET.....................................................................................................................................................10
RECALL DEFAULT..................................................................................................................................................10
MAINTENANCE.......................................................................................................................................................11
ALARM OUTPUT SOCKET...............................................................................................................................11
BATTERY..........................................................................................................................................................11
INSTRUCTIONS FOR HIDDEN SETTINGS ..........................................................................................................12
HIDING OR DISPLAY OF MENU ITEMS..........................................................................................................13
ADDITIONAL CONTROL SETTINGS................................................................................................................13
POWER OFF FUNC....................................................................................................................................13
MAX/MIN DISPLAY.....................................................................................................................................13
AUDIBLE ALARM........................................................................................................................................13
RED ALARM LIGHT....................................................................................................................................13
MONITOR IDENTIFICATION NUMBER.....................................................................................................13
SITE IDENTIFICATION NUMBER..............................................................................................................13
ALARM OUTPUT........................................................................................................................................14
SETTING ALARMS AS LATCHING OR AUTO RESETTING...........................................................................14
REMOTE RESET..............................................................................................................................................14
SAVING OF DEFAULT SETTINGS...................................................................................................................14
EXIT HIDDEN MENU........................................................................................................................................14
SUPPORT................................................................................................................................................................20

P139 GUARDIAN MONITOR INSTRUCTIONS
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Quick Start Guide
The P139 is a complex device with the ability to monitor many sensors associated with distressing conditions that can
occur in bed. It is especially aimed at supporting the care of those with Epilepsy and SUDEP. The alarm can then trigger
an Alert-iT Safelink Pager or Nurse Call/Telecare systems.
This handbook and associated Quickstarts, are intended to assist in adjusting the many alarm parameters to suit the
specific user. The adjustments must therefore be made by someone with skills similar to programming a mobile phone
and who is familiar with the users needs and competent to decide what additional safeguards will be needed, in the light
of the health risks involved. The manufacture offers a free telephone helpline and a range of information sheets to assist
(see page 20).
It is ESSENTIAL to adopt a methodical approach to setting each set of parameters, or the user will soon become
confused as to which sensor is giving alarms or false alarms. Unless otherwise informed the unit will have been shipped
with all alarms other than gross bed movement turned off and the internal audible sounder disabled. This will enable the
user to gradually introduce one sensor at a time and not be confused by false alarms as each setting is tested. Once all
the parameters are proved to be working as required, then the audible alarm can be enabled if required (see Hidden
Menu).
For protection against inappropriate or accidental parameter changes, all settings can be locked in a hidden menu.
Unless there is specific pressing needs, then the following order for setting the sensor parameters is recommended.
After enabling a sensor, then it is recommended that the sensor is used for a few days to establish the optimum setting
that has few false alarms while giving the required security, before proceeding with more sensors.
·Bed Movement
·Shallow Movement (Min=0)
·Bed Occupancy
·Moisture (wetting or vomit)
·Sound
·Shallow Movement (Max-Min) based on learning mode settings
Finally remember there are a set of DEFAULT parameters stored in the unit. If you get into difficulty these can easily be
recalled to establish a known good working state. Once the changes have proven to be successful, then these new
defaults can be saved within the Hidden Menu system.
On page 18 you will find a useful chart that lists all the menu items in order, with space to write the optimum settings
found by the user.
Look out for this “hint” frame
throughout the handbook
Hint for Getting Started
·To start the process, press the top right “Menu” key for 3 seconds to switch the unit on.
·Wait for the “Monitoring” screen. The P139 will return to this screen if no keys are pressed for 30 seconds.The “bar”
display indicates the state of the battery charge. Ensure the charger is plugged in if only one bar is displayed, as the
next stage will be that the unit will automatically power down.
·Press the MENU key again, and all the available settings will be displayed in rotation, starting with the Power Off
capability.
·In general the RIGHT arrow key will turn-on and increase the displayed parameter, while the LEFT key will
decrease and eventually turn off the parameter.
·The UP key will scroll back through the menu system, stopping at the “Monitoring Screen”. It also acts to RESET
any alarms that are active.
Refer to the main book section for hints on how best to begin setting each parameter., which will appear in a frame like

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P139 GUARDIAN MONITOR INSTRUCTIONS
IMPORTANT
Please read these instructions carefully before using the equipment and keep readily available for reference
purposes.
It is not intended for this equipment to be used in diagnosis of medical conditions or for the measurement of any
physiological processes. If the user is considered to be at high risk it should not be used without medical advice and
support.
The equipment can, when used correctly and in accordance with the instructions, be used to give warnings of
symptoms that may be related to particular conditions. The equipment, for a number of reasons, cannot be guaranteed
detect the symptoms being monitored and is not a substitute for direct supervision.
If there is ever any cause for concern with the performance of the equipment the supplier should be contacted.
DISPLAY & CONTROLS
Overview
A liquid crystal display screen with back lighting and a touch sensitive keypad is provided in order to indicate and
adjust, as required, the functions and the status of the system.
In the event of an alarm condition a highly visible red alarm light will flash on the top of the monitor (through this can
be disabled if it cause a nuisance) There are a number of screen displays, which provide details of each function and
allow adjustment of the various settings. Pressing the 'menu' button advances the screen display in sequence and the
settings can be adjusted by pressing the ‘INCREASE’ or ‘DECREASE’ buttons. By pressing the 'menu' button
repeatedly, the screen displays can be scrolled in sequence until the one required is observed. BACK reverses the
menu scrolling, stopping at the “Monitoring” screen, it also functions as the ‘ALARM RESET’ button when an alarm
condition is active.
The 'menu' button has the additional functions of a ‘POWER ON’ switch when the monitor is turned off
Continuously pressing a button has the same effect as repeated pressing.
If no buttons are pressed for longer than 30 seconds and no alarms have been activated the backlight turns off and
the screen will show the normal “monitoring” display.
When sound or motion is detected this is indicated by display symbols on the screen situated above the sound and
motion arrows. This facilitates testing and validating the monitor.
INCREASE
Set Snooze
DECREASE
& reset Snooze
& reset Max/Min
BACK
Reset alarms
Open menu
Power on
Sensor Indicators
)*#

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POWER Control
The monitor has an internal battery designed to maintain full operation during mains failure. It is charged by a mains
adapter which should be mounted in a well ventilated area. To isolate the monitor remove the charger connection.
Press and hold the ‘POWER ON’ button for 3 seconds to switch on the monitor. A start-up display will indicate the model
number and software issue, as well as the monitor identification and site identification numbers for the radio version.
After approximately 5 seconds the normal monitoring display will be observed on the screen.
If an alarm is activated, the screen will indicate the relevant alarm message and override the monitoring display.
To turn off the monitor press the 'menu' button until the “Power screen” is visible (one press from the normal monitor
screen). Press the DECREASE < button once turn-off the unit (note this functions can be disabled in the HIDDEN
menu). Power Off results in the Alarm OFF message (Fault 29) being sent as a warning that the monitor is off. If this is
an acceptable condition then the pager indication can be removed with the RESET ALL function, by disabling FAULT
warnings in the pager FUNCTION menu. After this RF Fail messages can be expected on the pager as the unit is no
longer transmitting its heartbeat signal (which can be silent) or the monitor can be temporarily deactivated in the pager
MONITOR SCREEN
Alarm monitoring is ONLY active when this screen is displayed. If no key is pressed for 30 seconds in any of the other
“menu” screens, then the monitor will revert to this screen and alarm monitoring will commence.
The backlight automatically extinguishes after 30 seconds so not to disturb users at night. Pressing the BACK button
will re-illuminate the screen without affecting the monitoring readings
LINE1: MONITOR ACTIVITY
With no alarms active the screen will show:
ALARMS OFF! This warns that no sensors have actually been enabled
ACTIVE: The normal state when the monitor is sensing for a condition
=zZ following ACTIVE shows the Snooze feature is enabled and can be activated
SUSPENDED: Followed by s (shallow movement & sound), m(moisture), b (bed vacation) shows which sensors are
temporarily suspended , until normal activity is again detected.
LINE2: STATUS INFORMATION
There are three different modes of presentation on this line:
In the basic monitoring condition the shallow movement rate will be displayed in movements per minute
Or If the Max/Min Shallow Movement Recorder is enabled (in HIDDEN menu) this will show instead.
Following this, if a Bed Occupancy Sensor is fitted, the word VACANT or In Bed will appear when appropriate.
However:
If SNOOZE is active then the time countdown will be displayed instead of all the above
ALARM ACTIVATING & RESET
When an alarm is activated the cause appears on line 1 of the screen with a minute/seconds counter on line 2 showing
how long the alarm has been active. Any active alarm condition can be reset immediately by pressing the ‘ALARM
RESET’ button so that the message “ALARM RESET” is displayed. After a period of 3 seconds the display screen will
return to the Monitoring Screen, providing that no further alarm conditions are activated.
Many of the alarms can be individually configured to be latching or automatically resetting. When an alarm is configured
as latching, then once activated the alarm will continue until it is manually reset by pressing the ‘ALARM RESET’ button.
When an alarm is configured as auto resetting, the alarm will automatically cancel as soon as the conditions causing
the alarm have reverted to normal., though the screen will continue to show that the alarm was activated for 60 seconds.
The configuration of the alarms as latching or auto resetting is made with the Hidden Settings screens. It is our practice
to set all the alarms as LATCHING on radio versions to ensure the carer has to attend to the user and there is no
uncertainty as to the cause of the alarm. For the wired versions, which are usually connected to Nurse Call or Telecare,
we set all the alarms as non-latching so that the carer only has one RESET point, that being the Nurse Call point.
SNOOZE
There may be short times when it is desirable to have the Bed Movement alarms temporarily disabled. This is particu-
larly useful if the user is restless for a period after going to bed, there is a need to use the bed for a caring activity or
the user wants some privacy for a while. From the Monitoring screen pressing the RIGHT INCREASE button (as indi-
cated by >=Zz) will show a time increasing in 5 minute steps. This will count down to zero, at which point the alarm
monitor will recommence. Pressing the DECREASE button at any time will cancel the snooze period.

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P139 GUARDIAN MONITOR INSTRUCTIONS
Radio Transmitter option (P139Bxx)
Model P139B includes a transmitter module, which will pass an alarm condition to a remote P137 or P168 Pager. Any
alarm indication that causes the red light on the P139 to flash will also cause an Alarm to be indicated on the Pager.
Resetting the alarm at the P139 will also reset the Pager.
The radio transmission is “failsafe” in that if a regular heartbeat signal is not received, then the Pager will indicate that
the RF link has failed (and hence the user may be at risk). This should be remedied immediately. Please see the Pager
handbook for fault finding suggestions.
The communication address for this option is the ID Number displayed on the front panel, which can be adjusted from
1-64 within the hidden menu.
Alarm Receiver Option (P139xxB)
Models without a radio transmitter can house a P155 radio receiver unit that can be triggered by any compatible Alert-iT
Care Alarm. In particular this has application for monitoring day-time falling, where the client wears a radio linked Fall
detection badge (eg P135). Should the detector be activated then a radio communicated alarm will trigger the P139 to
display “External Alarm”, and pass the alarm to any connected equipment (eg Nurse Call). For details how to pair the
receiver with alarm units please see the P155 handbook (UH1093). The EXTERNAL ALARM is always non-latching by
default, as it assumes the external equipment will control the reset condition.
MONITOR FUNCTIONS AND DETECTION OF SYMPTOMS AND CONDITIONS
SHALLOW BODY MOVEMENTS
This function can be used when the movement Sensor Plate is plugged into the yellow socket marked
“movement sensor” on the rear of the monitor.
The Sensor Plate can detect normal slow body movements which are associated with general muscle, diaphragm,
stomach or heart activity. While the monitor ignores most low-level vibrations, care must be taken to ensure that the cot
/ bed being monitored is not subjected to continuous vibration, as this could delay or prevent activation of the alarm.
This point can usually be covered via the Confidence Check procedure described later.
A “learn mode” is used to establish the normal shallow movement activity from which a Max and Min alarm condition
can be set, which may help to warn of the onset of a TONIC condition. It is also possible to send an alarm if all movement
ceases for a set period, as may indicate a SUDEP condition
Bed Movement Sensor Installation
The Sensor Plate with the label side uppermost should be placed on a firm, flat surface
UNDERNEATH the mattress so that it will be located centrally under the area of the abdomen
of the user. If the surface below the mattress is not firm or flat, the Sensor Plate should be
supported by placing it on a piece of non-resilient board. Ideally the board should be made to
cover the area under mattress and be made of a material such as plywood of at least 2 mm
(1/8”) thickness. The cable from the Sensor Plate should be located so that it will not be liable
to damage or present a hazard to the user. Ensure that thick bedclothes are not tucked
under the edges of the mattress which might lift the underside of the mattress away from the
Sensor Plate.
!
The detection of TONIC seizures or SUDEP cannot be guaranteed with precision. The monitoring of
shallow bed movements is a powerful tool in supporting users vulnerable to these conditions but
may need to be supplemented depending on the health risks involved. The carer must make this risk
assessment and the manufacture should be contacted for further advice as necessary
P140 Bed Movement Sensor
Mount with side shown upper-
most for best sensitivity
ŸThe Sensor Plate should not be used in a moving pram, vehicle or in a rocking cot/crib.
Draughts blowing over the bed/cot/crib may be detected by the Sensor Plate as shallow move-
ments. This would delay or prevent activation of the alarm. The use of fans directed towards the
bed/cot/crib should be avoided.
ŸThe movement alarm will not necessarily detect early stages of choking as the rapid body move-
ment and strengthened heart rate may be interpreted as acceptable shallow movements
The use of this monitor alone for detecting SUDEP is not recommended
!

P139 GUARDIAN MONITOR INSTRUCTIONS
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SHALLOW MOVEMENT MINIMUM
If the movement rate falls below this setting the monitor display will show the alarm message “SHALLOW MIN”.and
the alarm output will be activated. The setting ranges from OFF to 10 mpm (movements per minute)
The movement rate is usually averaged over a minute, but as an additional precaution zero movement detection is
ONLY delayed by the Shallow Movement Delay, which should be set to avoid false alarms during apnoea type events
(30 seconds is recommended)
See SHALLOW MOVEMENT ADJUSTMENT below on how to set the optimum value.
SHALLOW MOVEMENT DELAY
This sets the time after which an alarm (SHALLOW MOVEMENT) is raised when all shallow movement ceases. The
value is set to avoid false alarms if the user exhibits periods on excessive stillness normally (eg in sleep apnoea), but
fast enough to protect the user should a serious life threatening condition occur. If the user is know to be susceptible
to this condition then the carer is responsible for assessing the risks of using this monitor and determining any
additional surveillance necessary
SHALLOW MOVEMENT MAXIMUM ALARM
If the movement rate rises above this setting, the monitor will show the message “SHALLOW MAX”, and the alarm
output will be activated. The setting ranges from OFF to between 20 and 30 mpm.. WARNING: Very fast panting (faster
than 2 seconds) will be ignored as this conflicts with heart beats under stress and may therefore compromise fast
detection of SUDEP. However continuous activity at this rate will result in Shallow Movement Alarm instead due to the
lack of signal.
See SHALLOW MOVEMENT ADJUSTMENT below on how to set the optimum value.
SHALLOW MOVEMENT ADJUSTMENT
The normal sleeping pattern of a user will lead to great variability in the normal shallow movement pattern. The
Guardian Monitor has a built-in MAX/min movement recorder to help assess the optimum settings.
ŸIn the HIDDEN MENU (see later) the MAX/min DISPLAY function is enabled.
ŸThe Monitoring screen (when no alarm is active) will then display the Maximum and Minimum recorded values
at the start of the second line.
ŸThe carer resets these to a nominal value of 15 at the start of the recording period by pressing the DECREASE
(<) button.
ŸAt the end of the recording period the values are noted and used to judge the best limits for the SHALLOW
alarms.
Hints on setting Shallow Movement Monitoring
1. Using the TICK function is very useful to hear the movement sensor working.
2. Set the Shallow Magnification at 4 and with no user in the bed and no one touching the bed,
check the small x symbol does NOT appear on the screen. Decrease the magnification if
necessary to stop any sensor activity.
3. With the user or someone of similar weight lying on the bed check that the small x symbol
appears regularly on the screen (particularly with each breath). Increase the Magnification if not,
then recheck the x stops with no-one in the bed.
4. If SUDEP is of concern then set the Shallow Delay to 30 seconds and Shallow Min to 0. In this
case also perform a risk assessment to ensure an appropriate range of monitoring is used
5. On the first few nights do not use the Shallow Alarm Max/Min alarms but enable the “MAX/min
Display” recorder function in the hidden menu to detect the suitable settings
6. Once the user is sleeping press the DECREASE button (<) to reset & start the recorder
7. In the morning and before the user is awake, note the Max/Min readings and use these to set the
alarm values with a margin to prevent false alarms.
8. Validate operation during observed seizures and adjust the magnification and detection limits as
required. The manufacturer can be contacted for advice as required

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P139 GUARDIAN MONITOR INSTRUCTIONS
RESET and SUSPEND SHALLOW MOVEMENT MONITORING
If the alarm is active and latched (eg on radio units), then press RESET to clear the alarm. The monitoring will then
be suspended until 10 movements are detected (indicating the user safely in bed) or the Bed Occupancy signal is
present. This allows the monitor to remain dormant in the day, and automatically revert to monitoring at night or
whenever the bed is occupied.
For non-latched (eg Nurse Call) units, the alarm will automatically clear once movement is again detected. Alterna-
tively press RESET to suspend the monitoring.
Using the Bed Vacant signal provides a secure automatic way to prevent false alarms when no-one is in the bed,
though a risk assessment is essential as it will inhibit alarms if the person falls out of bed or moves off the occupancy
sensor mat (eg in a double bed).
The monitor must be checked that it has returned to ACTIVE once the occupant has settled back in bed
Using the suspend function is preferable to turning the unit off as there is no chance of the user returning to bed un-
protected (bar equipment failure).
SHALLOW MOVEMENT MAGNIFICATION
To allow for different thickness, structure and composition of mattresses and the depth and degree of the
user's movements, the monitor has an adjustable threshold setting.
ŸTo help set this an audible “tick” can be enabled to sound each time a shallow movement is detected. Hence
set TICK VOLUME to 8 (full volume) and have the user or a suitable subject lie as still as possible on the bed.
ŸAny Bed Occupancy Sensor should be disconnected for this test.
ŸThe SHALLOW MAGNIFY is then increased until a regular series of ticks is heard, at least as often as any
chest motion is observed.
ŸThe bed should then be vacated and the ticking should cease, to check that room vibrations or air currents do
not cause unwanted activation of the movement detection function. Should this occur then the MAGNIFICA-
TION must be reduced and the above tests repeated.
ŸAfter successful setting, turn off the TICK facility.
ROUTINE TESTING SHALLOW MOVEMENT DETECTION
The Monitor should be tested on a regular basis. The confidence check establishes that the shallow movement alarm
is operating correctly. For test purposes the bed should be empty. Push the mattress gently and rythmically and note
that a * symbol appears in the bottom right of the display. Check this does not appear when there is no movement
applied.
BODY SPASM MOVEMENT MONITORING
The spasm movement monitoring function of the monitor uses the bed movement sensor. For details see Bed
Movement Sensor Installation (Page4)
When the Monitor has detected a spasm movement of sufficient intensity, a ‘#’ symbol will flash on the screen above
the motion arrow in time with each movement.
SPASM ALARM
The seizure alarm is activated when movements are detected which are greater than a pre-set energy level and faster
than a pre-set frequency, as well as lasting for at least a pre-set period. The monitor will then display the message
“SPASM MOVEMENT ALARM”, and the alarm output activated.
SPASM DELAY
This setting adjusts the minimum period that movements need to persist before the alarm is activated. The period is
adjustable between 5 and 60 seconds or, alternatively, the spasm alarm feature can be switched off. This can be done
by pressing the 'menu' button until the screen “SPASM DELAY” is observed. Press the ‘INCREASE’ button to turn the
seizure alarm function on and increase the setting. Press the ‘DECREASE’ button to decrease the time setting.
Decreasing the time below 5 seconds will turn off the seizure alarm function.
If the time delay is set for too short a period, this will give an early warning of body movements, which may not
necessarily be seizure movements, and is more likely to cause false alarms. If the time delay setting is increased this
should reduce the probability of false alarms, but may not detect spasm movements of short duration. Some prior
knowledge of the nature of the user’s seizure patterns is desirable to make a suitable choice of the time delay setting.
The monitor will normally be provided with a pre-set time delay of about 15 seconds for general use and may not need
to be changed, unless a more suitable specific setting can be selected based on experience with the user.