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Updated: Jun 25, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Resolution of atrial thrombosis with heparin in a newborn with atrial flutter
Gabriele Bronzetti1, Cinzia D'Angelo, Andrea Angelini
1Pediatric Cardiology and Adult Congenital Unit, University of Bologna, Bologna (BO), Italy. gabronz@hotmail.com
Unlabelled:
Atrial thrombosis is a relatively rare event in children. We report a case of a newborn with AFI who after restoration of sinus rhythm, developed atrial thrombus on a prominent Chiari network floating between the right and left atrium through the patent foramen ovale. The thrombus was resolved following treatment with heparin without events.
Conclusion:
Atrial stunning was proposed as a key mechanistic phenomenon because the thrombus occurred after the cardioversion of AFI to sinus rhythm. Heparin may be effective in the resolution of atrial thrombus within a few days.
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