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Potential pathway through the heart of cerebral venous air emboli in the presence of severe tricuspid regurgitation

Air travels in a retrograde fashion due to severe tricuspid regurgitation forcing air back into the superior vena cava where it ascends into the jugular veins and intracranial venous structures. (Source: Santucci J, Mullaguri N, Battineni A, Guddeti RR, Newey CR. Paradoxical and retrograde air embolism from pressurized peripheral bolus. Case Rep Neurol Med 2021;2021:1063264. Copyright 2020 Cleveland Clinic Foundation. Creative Commons Attribution 4.0 International License [CC BY 4.0], https://creativecommons.org/licenses/by/4.0.)

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