5.19
Impella
®
RP with the Automated Impella
®
Controller
PURGE SYSTEM OPEN
If at any time during the course of support with the Impella
®
RP Catheter,
the Automated Impella
®
Controller alarms “Purge System Open,” follow the
instructions below.
1.
Inspect the purge system for leaks.
2.
If no leaks are visible, there may be a problem with the purge cassette. Replace the
purge cassette. (Refer to instructions earlier in this section of the manual.)
3.
If the Purge System Open alarm remains unresolved, this may be a sign of Impella
®
RP
Catheter damage. Complete the following steps immediately:
a.
Open the performance level icon and reduce the performance level to P1.
b.
Slowly pull back on the Impella
®
RP Catheter until it is in the inferior vena cava
(approximately 20 cm for an average size patient; 1 cm marks are available
on the catheter).
c.
Turn off the Impella
®
RP Catheter by opening the performance level icon and
reducing the P-level to P0.
d.
Disconnect the catheter from the Automated Impella
®
Controller.
e.
Remove the Impella
®
RP Catheter with the use of fluoroscopic imaging. If no
fluoroscopy is available, leave the catheter in the inferior vena cava until imaging is
available for visual assistance during removal of the Impella
®
RP Catheter.
HIGH PURGE PRESSURE
If the purge pressure exceeds 1100 mmHg, the Automated Impella
®
Controller displays the
“Purge Flow Low” alarm message.
1.
Inspect the purge system and check the Impella
®
RP Catheter for kinks in the tubing.
2.
If pressure remains high, decrease the concentration of dextrose in the purge solution
(eg, change from 20% dextrose to 10% dextrose).
PURGE SYSTEM BLOCKED
If a “Purge System Blocked” alarm occurs, the purge fluid flow stops.
1.
Check the purge system tubing and the Impella
®
RP Catheter for kinks or blockages.
2.
Decrease the concentration of dextrose in the purge solution.
3.
Replace the purge system.
Purge System Open
Alarm
This alarm may occur if purge
pressure is less than 100
mmHg.
De-air Procedure
You may run the de-air
procedure (described earlier
in this section) after changing
the dextrose concentration to
decrease the amount of time
it takes for a change in purge
pressure/flow to occur.
Unresolved High Purge
Pressure / Purge Flow
Low Alarm
If not resolved by the
recommendations provided,
high purge pressure—which
triggers the “Purge Flow
Low” alarm message—could
be an indication of a kink
in the Impella
®
RP Catheter.
In this case, the motor is no
longer being purged and
may eventually stop. Monitor
motor current and consider
replacing the Impella
®
RP
Catheter whenever a rise in
motor current is seen.
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