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Updated: Dec 7, 2025

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Closure of a Patent Foramen Ovale PFO: An Intervention Sequence
Published on: December 23, 2022
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Early experience with the Micro Plug Set for preterm patent ductus arteriosus closure
Caitlin M Heyden1, Howaida G El-Said1, John W Moore1
1Division of Pediatric Cardiology, Rady Children's Hospital and UC San Diego School of Medicine, San Diego, California, USA.
Summary
A new Micro Plug Set offers a safe and effective transcatheter approach for closing patent ductus arteriosus (PDA) in preterm infants. This early experience shows successful PDA occlusion with no adverse events.
Area of Science:
- Cardiovascular Medicine
- Pediatric Cardiology
- Interventional Cardiology
Background:
- Transcatheter patent ductus arteriosus (PDA) occlusion is an evolving procedure for premature neonates and infants.
- The safety and efficacy of minimally invasive PDA closure are crucial for this vulnerable population.
Purpose of the Study:
- To describe the initial clinical experience with a new, commercially available Micro Plug Set for transcatheter PDA occlusion.
- To evaluate the procedural and short-term outcomes of using this device in preterm neonates and infants.
Main Methods:
- A retrospective review of eight preterm neonates and infants undergoing transcatheter PDA device closure using the Micro Plug Set.
- Procedures involved transvenous occlusion guided by fluoroscopy and echocardiography.
- The Micro Plug Set is a short, microcatheter-delivered device available in multiple diameters.
Main Results:
- All eight procedures were technically successful, achieving complete PDA occlusion.
- The neonates and infants had a median gestational age of 27 weeks and were treated at a median of 41 days.
- No procedural or short-term adverse events were reported, indicating a favorable safety profile.
Conclusions:
- Transcatheter PDA device closure with the Micro Plug Set is safe and effective in preterm neonates and infants.
- This new device represents a promising option for PDA management in this patient group.

