paradoxical embolism


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par·a·dox·i·cal em·bo·lism

1. obstruction of a systemic artery by an embolus originating in the venous system that passes through a septal defect, patent foramen ovale, or other shunt to the arterial system;
2. obstruction by a minute embolism that passes through the pulmonary capillaries from the venous to the arterial system.
Synonym(s): crossed embolism

paradoxical embolism

Embolism arising from the venous circulation that enters the arterial circulation by crossing from the right side of the heart to the left side through a patent foramen ovale or septal defect. It may occasionally cause stroke in a patient with a deep venous thrombosis.
See also: embolism
References in periodicals archive ?
(47.) NHS: IPG371 Percutaneous closure of patent foramen ovale for the secondary prevention of recurrent paradoxical embolism in divers: guidance.
This finding strongly suggests that in older patients with risk factors for cerebrovascular disease the probability that neurological events could be due to paradoxical embolism across a PFO is low.
Paradoxical embolism originating from a venous source has been identified as a potential cause of stroke/TIA in patients with PFO.
Nathan, "Thrombus-in-transit and paradoxical embolism," Journal of the American Society of Echocardiography, vol.
It is likely that the patient's renal infarction was related to paradoxical embolism caused by small deep vein thrombosis migrating through the ASD shunt.
Bilateral renal infarction secondary to paradoxical embolism. Am J Kidney Dis 1999; 34(4):752-5.
The consequences of large, prolonged left-to-right shunting through an ASD include right ventricular volume overload and increased pulmonary flow, which may lead to pulmonary hypertension, Eisenmenger's syndrome, right heart failure, atrial arrhythmias or paradoxical embolism (6).
Neil, then 41, had suffered a paradoxical embolism which had caused irreparable damage to his ability to speak, think and remember but left his physical abilities untouched.
If a blood clot arises in a vein and passes through the hole and reaches the brain (called "paradoxical embolism"), a stroke results.