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Appendix
Reference
Guides
Alarms and
Emergencies
Patient
Management
Surgical
Implant and
Explant
Monitor
Peripherals
and
Accessories
HVAD
®
Pump Overview
Introduction
132 HVAD® Instructions for Use
8.3 Medium Priority Alarms
A Medium Priority Alarm may resolve on its own/without intervention, but patients are instructed
follow the instructions on the screen and call their clinician immediately to receive additional
instructions. Once resolved, the alarm message may remain on the Controller Display. Press
the “Scroll” button to clear the alarm message from the Controller Display and return to home
screen with VAD parameters. A new alarm will also clear a resolved medium alarm from the
Controller Display.
The table below describes Medium Alarms and possible meaning.
Table 30: Medium Priority Alarms
Message on Controller
(Line 1)
(Line 2)
Meaning
Alarm
Indicator Alarm Sound
[High Watts]
[Call]
A change in the
status of your
HeartWare
™
HVAD
™
System is detected
Flashing
Yellow
Gradual increase in volume over
Alarm gets louder after
5 minutes if alarm not muted
Able to mute alarm for
5 minutes or 1 hour
Electrical Fault (audio) can be
permanently disabled
Controller Fault (audio) can be
permanently disabled
[Electrical Fault]
[Call]
[Low Flow]
[Call]
[Suction]
[Call]
[Controller Fault]
[Call]
Controller
malfunction
[Controller Fault]
[Call: ALARMS OFF]
1. Controller malfunction
2. Suction detection,
[Low Flow] alarms
disabled
3. [High Power] and [VAD
Stopped] alarms may
be disabled
The Following are Medium-Priority Alarms:
[High Watts]: This alarm warns of a high power condition in running the HVAD
®
Pump. The alarm
is triggered when the Watts exceed the [High Power] alarm threshold. This may occur due to
thrombus or other materials (e.g. tissue fragments) in the device.
[Electrical Fault]: A fault in the continuity of the pump-to-controller electrical connection triggers
this alarm. The fault could be in the HVAD
®
Pump motor, driveline and connector, or within the
controller. The audio portion of this alarm can be permanently disabled via the monitor. When
this alarm condition occurs, the HVAD
®
Pump will be running on a single stator and will consume
slightly more power. Do not change controllers during an active [Electrical Fault] alarm.
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