Paradoxical embolisation to the brain in right-sided infective endocarditis and patent foramen ovale in a pregnant woman

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Abstract
The incidence of infective endocarditis in pregnancy has increased as a result of the opioid epidemic. Right-sided infective endocarditis (RSIE), specifically tricuspid valve endocarditis, is more commonly linked to injection drug use. In pregnant patients, a prompt diagnosis and treatment of infective endocarditis are crucial to prevent fetal and maternal morbidity and mortality. Complications associated with infective endocarditis in pregnancy include death, preterm labour and embolic disease. RSIE is classically linked to septic pulmonary emboli; however, we report a unique case of a pregnant patient with known tricuspid valve infective endocarditis. Our patient unfortunately developed an ischaemic stroke from paradoxical brain embolisation in the setting of a previously undiagnosed patient foramen ovale. Furthermore, we demonstrate the importance of considering how normal cardiac physiological changes associated with pregnancy can impact the clinical course in patients with RSIE.

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