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Updated: Aug 17, 2025

Closure of a Patent Foramen Ovale PFO: An Intervention Sequence
Published on: December 23, 2022
Patent foramen ovale: diagnostic evaluation and the role of device closure
Ahmed R Gonnah1,2, Mahima S Bharadwaj3,2, Hassan Nassar1
1University of Liverpool School of Medicine, Liverpool, UK.
Insights
A patent foramen ovale (PFO) can cause cryptogenic stroke through paradoxical embolism. This review covers PFO diagnosis, management guidelines, and device closure options.
Area of Science:
- Cardiology
- Neurology
- Medical Devices
Background:
- Patent foramen ovale (PFO) is a common cardiac anomaly.
- PFO is increasingly recognized as a risk factor for cryptogenic stroke via paradoxical embolism.
- Recent European Society of Cardiology guidelines address PFO diagnosis and management.
Purpose of the Study:
- To guide physicians on the diagnostic and referral process for PFO closure.
- To review clinical trials comparing PFO device closure with medical therapy.
- To outline the NHS England commissioning process for PFO management.
Main Methods:
- Review of current literature and European Society of Cardiology guidelines.
- Analysis of clinical trials on PFO device closure versus medical management.
- Examination of the NHS England PFO commissioning process.
Main Results:
- PFO is linked to paradoxical embolism and cryptogenic stroke.
- Device closure is a viable option compared to medical therapy in select patients.
- Specific criteria and pathways exist for PFO management and device closure.
Conclusions:
- Physicians should be aware of PFO as a cause of cryptogenic stroke.
- Multidisciplinary evaluation is crucial for PFO closure decisions.
- Understanding PFO management guidelines and device closure indications is essential.
Abstract:
Although seemingly benign, the presence of a patent foramen ovale (PFO) may play an important role in the pathophysiology of disease, specifically a paradoxical embolism leading to cryptogenic stroke. The European Society of Cardiology recently published guidelines detailing how PFOs are associated with paradoxical embolism and how they are diagnosed and managed. This review guides physicians in the diagnostic and referral process to a multidisciplinary team involved in PFO closure. It reviews the clinical trials comparing device closure with medical therapy and highlights the current NHS England commissioning process on PFO management. Finally, we give an overview of other conditions where PFO device closure may need to be considered.
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