Abstract
A 62-year-old female patient underwent mitral valve replacement with a 31/33-mm On-X valve for ischemic mitral valve regurgitation. Three months later, transthoracic echocardiography incidentally showed a blocked leaflet with 6 mmHg of mean pressure gradient and 2.4 cm2 of mitral valve orifice area. Transesophageal echocardiography could not detect thrombus. Electrocardiographically gated multidetector-row computed tomography (MDCT) clearly demonstrated a blocked leaflet in the close position and thrombus (2 cm in length, 0.4 cm2 in area) attached onto the atrial aspect of the leaflet. These findings observed by MDCT were confirmed at reoperation. MDCT was useful diagnostic method for visualizing prosthetic valve thrombosis.
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This work was supported in part by a Grant-in-Aid for Promoting a Board-Certified instructor, from Kochi Organization for Medical Reformation and Renewal, Kochi, Japan.
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Teshima, H., Ikebuchi, M., Sano, T. et al. A reoperation of thrombosed On-X valve detected by multidetector-row computed tomography. J Artif Organs 18, 373–376 (2015). https://doi.org/10.1007/s10047-015-0850-0
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DOI: https://doi.org/10.1007/s10047-015-0850-0