5.18
Instructions for Use & Clinical Reference Manual (US)
TROUBLESHOOTING THE PURGE SYSTEM
LOW PURGE PRESSURE
If at any time during the course of support with the Impella
®
RP Catheter,
the Automated Impella
®
Controller alarms “Purge Pressure Low,” follow the
instructions below.
1.
Inspect the purge system for leaks.
2.
If there are no leaks, change to a purge fluid with a higher dextrose concentration. To
do this, open the
PURGE SYSTEM
menu and select “Change Purge Fluid.” Follow the
instructions on the screen. (Refer to “Purge Cassette Procedures” earlier in this section
of the manual.)
3.
If the pressure stabilizes, no other action is required.
If the purge pressure is not stable, proceed to Step 4.
4.
If the low purge pressure alarm remains unresolved for more than 20 minutes, there
may be a problem with the purge cassette. Replace the purge cassette. (Refer to
“Change Purge Cassette” instructions on the previous page.)
5.
If the low purge pressure alarm still remains unresolved for more than 20 minutes,
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).
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.
Purge Pressure
Optimal purge pressure is
different for every Impella
®
RP Catheter. Purge pressure
can range from 300 mmHg
to 1100 mmHg. While
purge pressure varies during
operation, the Automated
Impella
®
Controller
automatically maintains purge
pressure within an acceptable
range for each Impella
®
RP
Catheter.
