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Paradoxical embolization via a patent foramen ovale following acute pulmonary embolism
D V Thomas1, M Bynevelt, R Price
1Department of Radiology, Sir Charles Gairdner Hospital, Perth, Western Australia 6009, Australia.
Abstract:
The foramen ovale is usually obliterated following establishment of the adult circulation but remains patent in 25% of individuals. This potential communication between the venous and arterial circulations can allow thromboembolic material to bypass the lungs and enter the systemic circulation. We report two cases of paradoxical embolization through a patent foramen ovale following acute large pulmonary embolism (PE) and discuss the factors that predispose to paradoxical embolization following PE.
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