'Inverted Tulip': New Deformation of Atrial Septal Defect Closure Devices.

Area of Science:

• Cardiology
• Neurology
• Medical Devices

Background:

• Patent foramen ovale (PFO) is a potential cause of ischemic stroke.
• High-risk anatomical features can complicate PFO closure procedures.

Observation:

• A 45-year-old woman with ischemic stroke underwent percutaneous PFO closure.
• Multiple attempts were needed for device deployment.
• The PFO device exhibited an 'inverted tulip' deformation post-release, causing a residual shunt.

Findings:

• The 'inverted tulip' deformation prolonged the procedure and led to a significant residual shunt.
• The residual shunt resolved spontaneously by the 1-month follow-up.

Implications:

• This case highlights potential complications during PFO device implantation.
• Spontaneous resolution of residual shunts is possible, warranting close follow-up.
• Understanding device behavior is crucial for successful PFO closure in stroke patients.