Management of Patent Foramen Ovale (PFO)
Diagnosis and Assessment
- The American Heart Association recommends that PFO is typically diagnosed by transthoracic echocardiography with observed flow between the left and right atrium by color Doppler ultrasonography 1
- Transesophageal echocardiography has higher sensitivity for PFO detection compared to transthoracic imaging and is recommended in younger adults with unexplained cerebrovascular events 4
- Sensitivity for PFO detection is increased by asking the patient to perform a Valsalva maneuver, which transiently increases right atrial pressure 4
- When PFO closure is planned, transesophageal echocardiography is recommended for detailed visualization of atrial septal anatomy 4
Management Algorithm Based on Clinical Presentation
- For patients under 60 years with cryptogenic stroke, the American College of Cardiology recommends PFO closure plus antiplatelet therapy, with a strong recommendation for patients with contraindications to anticoagulation 1, 2, 3
- For patients with contraindications to anticoagulation, PFO closure plus antiplatelet therapy is strongly recommended versus antiplatelet therapy alone 1, 2, 3
- The American College of Cardiology recommends antiplatelet therapy as first-line treatment for patients over 60 years with cryptogenic stroke, rather than PFO closure 6
Procedural Considerations for PFO Closure
- The PFO closure procedure typically takes under 2 hours, with an in-hospital stay of usually one day 1, 2
- Most activities can be resumed within a few days, with full recovery within a few weeks 1, 2
- Potential risks of PFO closure include device-related adverse events (3.6% absolute risk) 1, 2
Medical Therapy Options
- The American Heart Association recommends antiplatelet therapy options, including aspirin (75-325 mg daily) 6
- Anticoagulation therapy, such as warfarin with target INR of 2.0-3.0, is recommended if anticoagulation is indicated 6