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Updated: Mar 3, 2026

In Vitro Thrombosis Test for Ventricular Assist Devices
Published on: March 21, 2025
Thrombolysis of prosthetic mitral valve thrombosis in an infant
Ali Hage1, Frederic Jacques1, Philippe Chetaille2
1Service of Pediatric Cardiac Surgery, Centre Mère-Enfant Soleil, CHU de Québec-Université Laval, Quebec, Canada.
Insights
A 7-week-old infant with a mechanical mitral valve thrombosis was successfully treated with recombinant tissue plasminogen activator (rt-PA). This case highlights effective management strategies for pediatric mechanical prosthesis thrombosis.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Biomedical Engineering
Background:
- Mechanical heart valves are crucial for managing pediatric valvular heart disease.
- Thrombosis of mechanical prosthesis in infants presents unique clinical challenges.
- Anticoagulation and thrombolysis are key considerations in managing these complications.
Observation:
- A 7-week-old female infant presented with thrombosis of a mechanical mitral valve.
- The infant experienced symptoms related to valve dysfunction due to the clot.
- Diagnosis was confirmed through imaging studies.
Findings:
- Successful treatment of mechanical mitral valve thrombosis was achieved using recombinant tissue plasminogen activator (rt-PA).
- The infant showed significant clinical improvement following thrombolytic therapy.
- No major complications were reported during or after rt-PA administration.
Implications:
- Recombinant tissue plasminogen activator (rt-PA) represents a viable therapeutic option for infants with thrombosed mechanical heart valves.
- This case underscores the importance of prompt diagnosis and tailored treatment approaches in pediatric thrombosis.
- Further review of management strategies for infants with thrombosed mechanical prosthesis is warranted to optimize patient outcomes.
Abstract:
A 7-week-old female developed thrombosis of a mechanical mitral valve and was successfully treated with recombinant tissue plasminogen activator (rt-PA). The management of infants with thrombosed mechanical prosthesis is reviewed.
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