7.9
Impella
®
System for Use During Cardiogenic Shock
COLOR DOPPLER ECHOCARDIOGRAPHY
When moving a patient supported with an Impella
®
Catheter, it is important to monitor catheter
migration. Adding color Doppler to an echo is another way to verify catheter position. If the
Impella
®
Catheter is correctly positioned, a dense mosaic pattern of turbulence will appear
above the aortic valve near the outlet area of the catheter, as shown in the top image in Figure
7.4. If, however, the echocardiogram reveals a dense mosaic pattern of turbulence
beneath the
aortic valve (bottom image in Figure 7.4), this likely indicates that the outlet area of the catheter
is in the wrong position, that is, the catheter is too far into the ventricle or entangled in papillary
muscle. (Note: If using transesophageal echocardiography [TEE], look for the mosaic patterns in
the same locations relative to the aortic valve and Impella
®
Catheter outlet area.)
Correct Impella
®
Catheter Position (Color Doppler TTE)
Incorrect Impella
®
Catheter Position (Color Doppler TTE)
Figure 7.4 Correct and Incorrect Impella
®
Catheter Position (Color Doppler TTE)
7
PA
TI
EN
T M
A
N
A
G
E
M
EN
T T
O
P
IC
S
Содержание Impella 2.5
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