Natalizumab and PML in MS
Jul. 26, 2023
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Transthoracic echocardiography showing tricuspid valve vegetation (left, white arrow) and location of interatrial septum and patent foramen ovale (right, white arrowhead). There was a large right-to-left shunt through the patent foramen ovale on bubble study with spontaneous opacification of the left atrium and ventricle (right). (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. Creative Commons Attribution 4.0 International license [CC BY 4.0], https://creativecommons.org/licenses/by/4.0.)