Prevention of Stroke in Patients with Patent Foramen Ovale

Author:

Mattle H. P.,Meier B.1,Nedeltchev K.2

Affiliation:

1. Department of Cardiology, Inselspital, University of Bern, Bern, Switzerland

2. Department of Neurology, Inselspital, University of Bern, Bern, Switzerland

Abstract

Patent foramen ovale is found in 24% of healthy adults and 38% of patients with cryptogenic stroke. This ratio and case reports indicate that patent foramen ovale and stroke are associated, probably because of paradoxical embolism. In healthy people with patent foramen ovale, embolic events are not more frequent than in controls, and therefore no primary prevention is needed. However, once ischaemic events occur, the risk of recurrence is substantial and prevention becomes an issue. Acetylsalicylic acid and warfarin reduce this risk to the same level as in patients without patent foramen ovale. Patent foramen ovale with a coinciding atrial septal aneurysm, spontaneous or large right-to-left shunt, or multiple ischaemic events potentiates the risk of recurrence. Transcatheter device closure has therefore become an intriguing addition to medical treatment, but its therapeutic value still needs to be confirmed by randomised-controlled trials.

Publisher

SAGE Publications

Subject

Neurology

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