Newport HT50 - Page 40

DESCRIPTION OF CONTROLS, INDICATORS, ALARMS & CONNECTIONS
3-16 SERHT50NA A0808
▲ V
•
I
(High Insp. Minute Volume) Alarm
(user adjustable)
Audible Alarm: Intermittent beep
Visual Alarm: ▲V
•
I
indicator blinks red
Message Window: HIGH V
•
i
The High Insp. Minute Volume Alarm is activated when the
delivered inspiratory minute volume exceeds the High ▲ V
•
I
alarm
setting. The alarm is cancelled after delivered inspiratory minute
volume falls below the ▲V
•
I
alarm setting.
WARNING The Insp. Minute Volume Alarms are based on the
deliv
ered volume from the ventilator. The actual minute volume
in the patient lungs may be significantly different in cases such
as circuit leak, disconnection, and pneumothorax. To verify the
exhaled minute volume, use a separate exhaled volume
monitor.
▼ V
•
I
(Low Insp. Minute Volume) Alarm
Back-up Ventilation
(user adjustable)
Audible Alarm: Intermittent beep
Visual Alarm: ▼V
•
I
indicator blinks red
Message Window: LOW V
•
i
LOW V
•
i (BUV) (if back-up ventilation is active)
The Low Insp. Minute Volume Alarm is activated when delivered
inspiratory minute volume falls below the Low ▼
V
•
I
alarm limit
setting.
WARNING The Insp. Minute Volume Alarms are based on the
deliv
ered volume from the ventilator. The actual minute volume
in the patient lungs may be significantly different in cases such
as circuit leak, disconnection, and pneumothorax. To verify the
exhaled minute volume, use a separate exhaled volume
monitor.
Back-up Ventilation
Back-up Ventilation is an alarmed function that activates when the
delivered inspiratory minute volume (V
•
I
) falls below the Low ▼V
•
I
setting. During Back-up Ventilation, the Low ▼V
•
I
(Back-up Vent)
alarm indicator blinks, an audible alarm sounds, and “LOW V
•
i (BUV)”
is displayed in the Message Display Window. The ventilation settings
employed by Back-up Ventilation are then displayed on the front
panel. Back-up Ventilation ceases when V
•
I
= ▼V
•
I
+ 10%, at which
time ventilation and front panel displays return to user-set values.
Back-up Ventilation is functional in all modes. See page 4-5 for a
complete description of Back-up Ventilation.