3.10
Instructions for Use & Clinical Reference Manual (US)
When the Impella
®
5.0 or LD Catheter is correctly positioned across the aortic valve, the changes
in pressure associated with the cardiac cycle result in a pulsatile placement signal (see Figure
3.7). During diastole (time zero in Figure 3.6), the large pressure difference between the aorta
and the left ventricle creates a large electrical signal. Then at the peak of systole, when the
aortic valve opens, the pressure difference between the aorta and the left ventricle—and thus
the electrical signal—is zero. Thus, the continual pressure changes associated with the cardiac
cycle produce the pulsatile (up and down) waveform seen on the Automated Impella
®
Controller
display.
Impella Flow
5.0
System Power
MUTE
ALARM
0 . 0
DISPLAY
0 . 0
MENU
PURGE
SYSTEM
Impella 5.0 S/N: 123456
30 - 06 - 2011 05:30
100%
CONTROL
FLOW
P - 8
L/min
5.2 Max
________________________
4.8 Min
Purge System
Purge Pressure: 600 mmHg
Purge Flow: 20.0 ml/hr
Motor
Current
8 00/690
( 7 45)
( mA)
10 sec.
Placement
Signal
( mmHg)
35/2
( 17 )
10 sec.
60
-20
1000
0
Figure 3.7 Correct Impella
®
5.0/LD Catheter Positioning and Pulsatile Placement Signal
When the Impella
®
5.0 or LD Catheter is not properly placed across the aortic valve, or when
it is fully in the aorta or fully in the ventricle, the pressures outside and inside the cannula are
the same throughout the cardiac cycle. As a result, the pressure on either side of the sensor
membrane is the same, resulting in a flat placement signal (see Figure 3.8).
Impella Flow
5.0
System Power
MUTE
ALARM
0 . 0
DISPLAY
0 . 0
MENU
PURGE
SYSTEM
Impella 5.0 S/N: 123456
30 - 06 - 2011 05:30
100%
CONTROL
FLOW
P - 8
L/min
5.2 Max
________________________
4.8 Min
Purge System
Purge Pressure: 600 mmHg
Purge Flow: 20.0 ml/hr
Impella Flow
5.0
System Power
MUTE
ALARM
0 . 0
DISPLAY
0 . 0
MENU
PURGE
SYSTEM
Impella 5.0 S/N: 123456
30 - 06 - 2011 05:30
100%
CONTROL
FLOW
P - 8
L/min
5.2 Max
________________________
4.8 Min
Purge System
Purge Pressure: 600 mmHg
Purge Flow: 20.0 ml/hr
Impella Flow
5.0
Purge System
Purge Flow: 20.0 ml/hr
Time Remaining: 021:52
MUTE
ALARM
DISPLAY
PURGE
SYSTEM
MENU
System Power
5 . 0
100%
Impella Position
Wrong
Impella S/N 123456
21 - 12 - 2010 05:30
1 . R ed uce t h e P - lev el t o P - 2 un t i l i m a g i n g i s a v a i la b le.
2 .
R ep osi t i on w i t h i m a g i n g .
3 .
R et ur n t o p r ef er r ed P - lev el a n d con f i r m p osi t i on i n g w i t h i m a g i n g .
Impella Position Wrong
P-LEV EL
P - 8
L/min -.-
Impella Flow
5.0
Purge System
Purge Flow: 20.0 ml/hr
Time Remaining: 021:52
System Power
MUTE
ALARM
0 . 0
DISPLAY
MENU
PURGE
SYSTEM
Motor
Current
8 01/8 00
( 8 00)
( mA)
10 sec.
Placement
Signal
( mmHg)
6/2
( 2)
10 sec.
Impella S/N 123456
21 - 12 - 2010 05:30
60
-20
1000
0
100%
Impella Position Wrong
1 . R ed uce t h e P - lev el t o P - 2 un t i l i m a g i n g i s a v a i la b le.
2 .
R ep osi t i on w i t h i m a g i n g .
3 .
R et ur n t o p r ef er r ed P - lev el a n d con f i r m p osi t i on i n g w i t h i m a g i n g .
P-LEV EL
P - 8
L/min -.-
Figure 3.8 Incorrect Impella
®
5.0/LD Catheter Positioning and Flat Placement Signal
Summary of Contents for Impella 2.5
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