Section 2
General Description
Alarm Display
In each alarm window, messages are listed in order of occurrence, with
the most recent at the bottom of the list. When a new alarm condition
occurs, an arrow appears to its left. If the alarm condition creating this
message is then resolved, the arrow disappears and does not reappear
until the occurrence of a new alarm condition.
If the number of alarms in a category exceeds the space provided in that
category’s window, additional alarm messages are retained in the
monitor’s memory until space is available (that is, when displayed alarm
conditions are resolved).
NOTE: The last space at the bottom of the Advisories window in
the central alarm display is reserved for the SILENCE
message. The SILENCE message indicates the time
remaining in the Audio Silence period.
Alarm Signal
The Narkomed 2B annunciates only the highest-priority, currently active
alarm. Lower-priority alarms are temporarily suppressed to minimize
the confusion caused by simultaneous alarms. To temporarily silence
audible alarms, you can use the Alarm Silence key on the control key
panel (labeled with a crossed-out speaker).
If the primary speaker on the Narkomed 2B fails, a backup speaker is
activated. The backup speaker has a tinny sound to distinguish it from
the primary speaker. Another indication of the failure of the primary
speaker is the appearance of the Advisory message SPEAKER FAIL on
the central alarm display.
Ventilation Alarms
When the system power switch is turned to the ON position, the
respiratory volume monitor’s low minute volume and apnea volume
alarms are automatically disabled to allow machine setup without
nuisance alarms. The breathing pressure apnea alarm is also disabled to
avoid a spurious alarm with a spontaneously breathing patient. An
interlock with the ventilator ensures that when the ventilator is turned
on, the alarms are automatically enabled. The respiratory and apnea
volume alarms can also be manually enabled with the VOLUME ALARMS
DISABLE key. The breathing pressure apnea alarm can be manually
enabled with the APNEA ALARM DISABLE key.
Manual Sphygmo-
manometer
(optional)
Noninvasive blood pressure can be measured with the manual
sphygmomanometer. Several cuff sizes are available to accommodate
varying patient requirements.
2-27
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