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3.2 Measurement Invalid Alarms
Invalid measurements could be caused by problems such as an ECG lead detaching from the patient or by
a kinked ETCO
2
sample line. Such conditions sound an alarm with a tone and pattern distinct from the
other alarms. You can quiet these with the Silence button, and you can suspend the alarm with the
appropriate
ALARMS Off button. A Measurement Invalid alarm could also indicate that the patient’s
vital sign has exceeded the measurement capability of the Atlas Monitor. Measurement Invalid alarms
trigger a Print On Alarm, if Print On Alarm is configured.
The Measurement Invalid Alarm is indicated by
distinctly different alarm tones and by a message
on the screen. A variety of conditions might
cause this type of alarm, such as:
• the ETCO
2
sample line is kinked.
• one of the ECG leads has fallen off the
patient.
• the ETCO
2
watertrap is full and must be
replaced.
• one of the sensor cables is unplugged from
the monitor.
• the blood pressure cuff is detached, has a
leak, or is kinked.
• the patient’s vital sign measurement is
outside the range supported by the
instrument.
Any of these Measurement Invalid conditions
will cause four things to happen:
• The audible alarm will sound, if the event
occurs outside a silence period.
• The affected measurement will show
flashing dashes “---”.
• A message appears on the screen.
• A Print On Alarm will occur if Print On
Alarm is configured and alarms are not
suspended or silenced.
Silencing alarms – You can silence the audible
alarm with the
Silence button for a short period.
This will not erase the message from the screen.
During this period, you should try to correct the
problem by reconnecting the cable or patient
lead, or changing the watertrap, if appropriate.
At the end of the silence period, if the condition
still exists, the audible alarm will announce the
problem again. When alarms are silenced, they
will not trigger a Print On Alarm. When the
silence period is over, an alarm that is still active
will trigger a Print On Alarm if the Print On
Alarm configuration is set to Yes.
Suspending alarms – If the problem cannot be
corrected, or if you want to ignore this
measurement, you can suspend a measurement
invalid alarm by pressing the corresponding
ALARMS Off button. This will erase the
message from the screen and, depending on the
language setting, prevent further audible alarms
and messages for this condition. The dashes “---
” will be solid, not blinking. A Print On Alarm
will not occur when an alarm is suspended. If
the alarm is still active when it is unsuspended, a
Print On Alarm will occur if it is configured.
The ALARMS Off buttons are:
•
HR ALARMS Off for heart rate.
•
SpO
2
ALARMS Off for oximetry levels and
pulse rate.
•
BP ALARMS Off for blood pressure.
•
RESP ALARMS Off for respiration rate
(model 622xx). In model 623xx, this is
CO
2
/RESP ALARMS Off, and it suspends
alarms for respiration rate and CO
2
levels.
Note: Individual alarms can be suspended for
only 3 minutes when the language setting is
configured to “Francais”. If the language
setting is set to any other language, pressing
the
ALARMS Off button will suspend the
corresponding alarm until you remove the
suspension.
Note: The
Temperature measurement never
produces an audible alarm. If the temperature
probe disconnects from the patient, the display is
replaced by solid dashes “---”.