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Unexpected mechanical bileaflet valve thrombosis in mitral position: what is better to do, re-replacement or thrombolysis

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Background and aims. The longevity of the mechanical heart valve prosthesis is an advantage when compared with its biological counterpart, although the former carries a risk of thrombosis depending on valve design, materials and host-related interface; therefore, a patient with a mechanical valve prosthesis, particularly in mitral position, is at risk for systemic thromboembolism even when properly anticoagulated.

Patients and methods. We report a case of a 60-year-old woman who underwent a mitral valve replacement with a St. Jude Medical (SJM) standard bileaflet mechanical heart valve.

Results. On the twelfth post-operative day a primary thrombosis with blockage of the anterior valve leaflet occurred.

Conclusions. Aware of the risk of recurrent thromboembolism in this special clinical framework and possible cerebral bleeding in case of thrombolysis, we replaced the prosthesis with a new biologic porcine valve, the SJM Biocor.

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Bottio, .T., Gerosa, .G., Basso, .C. et al. Unexpected mechanical bileaflet valve thrombosis in mitral position: what is better to do, re-replacement or thrombolysis. Langenbecks Arch Surg 387, 166–169 (2002). https://doi.org/10.1007/s00423-002-0302-1

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  • DOI: https://doi.org/10.1007/s00423-002-0302-1

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