III. SPECIFICATIONS, CONNECTIONS & USER INTERFACE cont’d.
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NOTES REGARDING ALAR
NOTES REGARDING ALARNOTES REGARDING ALAR
NOTES REGARDING ALARMS
MS MS
MS
RATE- The monitored rate is calculated and displayed as a rolling average over 5 breaths.
HIGH PEAK PRESSURE- Inspiratory is terminated if the peak pressure reaches the high limit as set
except for sigh breaths. During sigh breaths the high peak pressure limit is increased by 1.5 times the
display setting (up to 125 cmH
2
O).
LOW PEAK PRESSURE- This alarm is inactive during spontaneous and CPAP breaths.
EXHALED TIDAL VOLUME (use is optional)- Exhaled Tidal Volume and Exhaled Minute Volume share
the same line in the ALARM 1 menu. Therefore, only one or the other may be displayed at any given time.
To display one or the other, press either EXHTV or EXHMV, depending on which is currently displayed,
and press either arrow key. Repeatedly pressing an arrow key will toggle between EXHTV and EXHMV.
Once the desired parameter is displayed, it becomes the active alarm and may be turned on and its limits set
in the normal manner. The state of each of these parameters, either on or off, remains in effect whether it
is displayed or not. Therefore, EXHTV or EXHMV may be on, but not displayed. It must be displayed,
however, to be active for alarms.
The displayed Exhaled Tidal Volume updates with each breath.
Only the pediatric/adult pneumotach, #4410, can be used. Any other pneumotach will display “WRONG
PNEUMO” between the high and low limits and the unit will alarm.
If there is no pneumotach plugged into the unit and either the EXHTV or EXHMV function is turned on
and active, the unit will alarm and display “NO PNEUMO” between the high and low limits.
Under certain circumstances, such as incompliant or large patients, the Peak Expiratory Flow may be too
great for the pneumotach to read. When this occurs, “EXCEEDS PEF” will be displayed in the Alarm 1
menu under EXHTV or EXHMV and the Crossvent will alarm. This alarm will occur even if the EXHTV or
EXHMV alarm is turned off. This is to notify the user that the pneumotach may be too great a restriction in
the circuit for the patient.
EXHALED MINUTE VOLUME- (see EXHALED TIDAL VOLUME)
NOTE:
EXHMV indicates a projected or anticipated minute volume based on the current exhaled tidal
volume readings.
PEEP/CPAP- displays CPAP when in CPAP mode and PEEP in other modes. PEEP displays an average of
the previous three breaths in other modes.
DEACTIVATING ALARMS- The alarms for Mean, Exhaled Tidal Volume, Exhaled Minute Volume and
O
2
may be turned off by scrolling the low limit down past its lowest limit to Off.
WARNING: It is important to note that once a sensor has been turned off, the alarms
for that sensor are inoperative.
WARNING: While some alarms may be turned off to permit use of the Crossvent
without them, it is recommended that they be used at all times.
5
55
5-
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- KEYS COMMON TO ALL MENUS
KEYS COMMON TO ALL MENUS KEYS COMMON TO ALL MENUS
KEYS COMMON TO ALL MENUS
LOCK
LOCKLOCK
LOCK
Locks all keys, except ALARM QUIET and the MENU keys, making them inactive if pressed. When active,
this key is highlighted and the touchscreen is locked. To unlock it, press this key once, then press it again
within 5 seconds.
ALARM QUIET
ALARM QUIETALARM QUIET
ALARM QUIET
Silences the audible alarm for a period of 60 seconds or 120 seconds if pressed twice consecutively. When
set, the key is highlighted and counts down showing the time remaining for which the alarms will be
silenced. If it is active and the count is less than 60 seconds, pressing it once will reset it to 120 seconds.
To cancel, press the key once if the time remaining is ≥61 seconds or twice if it is ≤60 seconds. When you
turn the ventilator on or return to the MAIN menu from either the SETUP or CAL menus, the Alarm Quiet
is activated automatically for 60 sec.
During an alarm condition, the only way to display a menu other than the alarming menu is to activate
Alarm Quiet. Any menu can then be displayed by pressing its corresponding key.
When activated, the ALARM QUIET function will silence the audible alarm for any alarm conditions that
exist at the time it is activated. Should a new and different alarm condition occur while it is activated,
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