Patent Foramen Ovale: Stroke and Device Closure

Area of Science:

• Cardiology
• Neurology
• Medical Devices

Background:

• Patent foramen ovale (PFO) is a common cardiac anomaly in adults.
• PFO is frequently associated with cryptogenic stroke, a stroke of unknown cause.
• Microemboli traversing a PFO are hypothesized to cause stroke.

Purpose of the Study:

• To review the association between PFO and cryptogenic stroke.
• To evaluate the current evidence for PFO device closure in stroke prevention.

Main Methods:

• Literature review of studies and randomized trials.
• Analysis of the association between PFO and stroke pathogenesis.
• Assessment of PFO closure device efficacy.

Main Results:

• Numerous studies and trials have investigated PFO closure for stroke prevention.
• Significant debate continues regarding the definitive efficacy of PFO closure.
• Medical therapy and PFO closure are proposed treatment options.

Conclusions:

• The role of PFO in cryptogenic stroke remains a subject of ongoing research and clinical debate.
• Evidence for PFO device closure in reducing recurrent stroke risk is still being established.