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Patent foramen ovale and cryptogenic stroke: contemporary evidence and treatment
Authors:J. J. Coughlan  Aidan Daly  Samer Arnous  Tom J. Kiernan
Affiliation:1. Department of Cardiology, University Hospital Limerick, Limerick, Ireland;2. Department of Cardiology, Graduate Entry Medical School, University of Limerick, Limerick, Ireland;3. Graduate Entry Medical School, University of Limerick, Limerick, Ireland
Abstract:Introduction: Patent foramen ovale (PFO) is a common anatomical variant in the adult circulation. It is a channel allowing communication between the left and right atria and is a remnant of the foetal circulation. In approximately 25% of the population, this channel persists into adulthood. PFO has been proposed as a potential pathophysiological mechanism for cryptogenic stroke.

Areas covered: This review will examine the contemporary evidence for both the association between cryptogenic stroke and PFO and the management of this condition. The authors hope to provide a comprehensive overview of the current evidence and best practice in relation to PFO closure. In addition, the authors will propose some potential avenues for future research in this controversial area and try to predict how PFOs in cryptogenic stroke will be managed in the near future.

Expert commentary: In carefully selected patients with cryptogenic stroke, PFO closure represents an evidence based treatment option for the prevention of further ischemic neurological events. A multidisciplinary approach is necessary to ensure appropriate patient selection for the procedure. This should include a vascular neurologist/stroke physician and an interventional cardiologist with an interest in PFO closure.

Keywords:Patent foramen ovale  cryptogenic stroke  interventional cardiology
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