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Canadian Journal of Cardiology

Bacterial Endocarditis Manifesting as Outflow Tract Obstruction in Two Patients Implanted With Percutaneous Prosthetic Pulmonary Valves

Published:February 05, 2015DOI:https://doi.org/10.1016/j.cjca.2015.02.003

      Abstract

      Recent reports on bacterial infections occurring in patients with transcatheter-implanted pulmonary valves have raised concerns about higher than previously perceived occurrences of these events. We report on 2 patients who presented with right ventricular outflow tract obstruction secondary to prosthetic pulmonary valve endocarditis involving the valve's periphery, a rarely described and uncommon manifestation. One patient had an acute and rapidly deteriorating disease course, whereas the other had a more chronic and indolent course. Both patients were treated in the catheterization laboratory to relieve the obstructions, treatments which resulted in satisfactory acute results.

      Résumé

      De récents rapports sur les infections bactériennes survenant chez les patients ayant subi l’implantation par cathéter de valves pulmonaires ont soulevé des préoccupations sur le plus grand nombre d’événements par rapport à ce qui était observé antérieurement. Nous rapportons le cas de 2 patients qui ont présenté une obstruction de la chambre de chasse du ventricule droit secondaire à l’endocardite sur prothèse valvulaire pulmonaire impliquant la périphérie des valves, une manifestation rarement décrite et peu commune. L’un des patients a connu une détérioration rapide à court terme de l’évolution de la maladie, tandis que l’autre patient a connu une évolution à long terme et indolente. Les deux patients ont été traités en laboratoire de cathétérisme pour soulager les obstructions, des traitements qui ont entraîné des résultats satisfaisants à court terme.
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