CTICasesMalpositioned IABP
Imaging findings
Chest radiograph shows a subclavian-approach intra-aortic balloon pump (IABP) catheter, with the proximal metallic marker positioned at the top of the aortic arch. The balloon pump itself extends into the descending thoracic aorta.
Key takeaways
When an IABP is placed via the subclavian or axillary artery, the proximal marker should be located below the aortic arch. If the balloon is positioned too high, it carries a risk of occluding or injuring the subclavian or carotid artery origins during inflation. However, because advancing the catheter carries a risk of introducing infection, adjusting a subclavian IABP must be balanced against septic risk.
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