CTICasesVV-ECMO Cannula Malposition
Cite this case
[...]. VV-ECMO Cannula Malposition. CTICases. Published April 14, 2022. https://str-case-explorer.pages.dev/c/hzyd7
Imaging findings
A patient on VV-ECMO had two cannulae in the IVC separated by only ~2 cm.
Key takeaways
If inflow and outflow cannulae are too close, it causes a recirculation phenomenon where oxygenated blood is immediately sucked back out, rendering the ECMO ineffective. Adequate separation (approx. 10 cm) is required.
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