CTICasesImpella 5.5 Device Placement
Imaging findings
Chest radiograph demonstrates an Impella 5.5 mechanical circulatory support device placed via the right axillary arterial approach. Unlike typical earlier Impella models which feature a pigtail catheter tip in the left ventricle, the Impella 5.5 is designed without a pigtail tip, appearing as a blunt-ended catheter traversing the aortic valve into the left ventricle.
Key takeaways
The Impella 5.5 is a microaxial temporary left ventricular assist device designed for axillary insertion that provides higher cardiac output. Radiologists should recognize that this device is designed without a pigtail catheter tip to avoid misinterpreting it as fractured or malpositioned.
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