Alarm Settings Tab - HeartWare Ventricular Assist System Instructions For Use Manual

Figure 43: Alarm settings tab
Figure 44: Controller fault audio
Figure 45: Permanently silence controller fault
dialogue box
Figure 46: Electrical fault audio
Ventricular Assist System

8.6.3 Alarm Settings Tab

The Alarm Settings tab (Figure 43) is used to set the Low Flow Alarm and High Power Alarm thresholds. Both flow
and power are time averaged values not instantaneous values. The Low Flow Alarm threshold may be set from 1 L/min
to 9.9 L/min in 0.1 L/min increments. The Low Flow Alarm should be set at 2 L/min below the patient's average flow.
Do not set the Low Flow Alarm below 2 L/min. The High Power Alarm may be set from 1.0 watts to 25.0 watts in
increments of 0.5 watts. Default settings are 1 L/min for Low Flow and 16 watts for High Power. The High Power
Alarm should be set 2 watts above the patient's current average power. If the flow drops below the low flow
threshold (e.g. 1 L/min) or the power exceeds the high power threshold (e.g. 16 watts), an alarm is triggered.
Clinicians should set the Low Flow and High Power Alarm thresholds close to the patient's flow and power values,
respectively.
nOTE:
• The Low Flow Alarm should be set at 2 L/min below the patient's average flow. DO NOT set the Low Flow Alarm
below 2 L/min.
• The High Power Alarm should be set 2 watts above the patient's current average power.
When certain alarm or fault conditions exist, the Alarm Settings tab may be used to access additional controls to
silence the audio component of the alarm or fault for extended time periods.
The Controller Fault Audio button appears during a medium priority "Controller Fault" alarm (Figure 44). The
Controller Fault Audio button can be used to permanently silence a controller fault alarm. However, the controller
and monitor will continue to display the controller fault alarm until the condition resolves.
Permanently silencing the "Controller Fault" audible alarm is a two step process. Pressing the "Silence" button
on the monitor touch screen will bring up a confirmation box (Figure 45). Pressing the "Yes" button will silence
all current medium priority controller fault alarms. Subsequent controller faults will produce new audible alarms.
The Electrical Fault Audio button appears during a medium priority "Electrical Fault" alarm (Figure 46). The
Electrical Fault Audio button can be used to permanently silence an electrical fault alarm. However, the controller
and monitor will continue to display the electrical fault alarm until the condition resolves.
The user should always log off the password-protected System Screens after completing system adjustments.
Press the Logout button and confirm by pressing the YES button to return to the Clinical Screen. If the System
Screen is not used for 11 minutes, the user is automatically logged out and needs to enter the password to access
these screens.
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Instructions For Use 13