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Severe Mitral Regurgitation After Implantation of Aortic On-X Prosthetic Valve: Report of a Case

On-X機械式主動脈瓣膜置換後致嚴重二尖瓣逆流之個案報告

摘要


On-X雙瓣式機械心臟瓣膜於1996年發表使用。和其他雙瓣式機械心臟瓣膜比較起來,On-X瓣膜有較佳的血流動力學表現及較少的術後併發症。我們報告一個因主動脈瓣狹窄接受On-X瓣膜置換,於術中經食道心臟超音渡證實因On-X瓣膜的長體構造扭曲二尖瓣環而導致嚴重的二尖瓣逆流,在經過重新置換成Edward Mira機械瓣膜後,二尖瓣逆流即刻改善至術前的情況的病例。

並列摘要


The On-X prosthetic valve was developed in 1996. Compared to other bileaflet prosthetic valves, it provides better hemodynamics and fewer complications. We report a case of aortic stenosis, in which severe mitral regurgitation occurred after aortic valve replacement with On-X valve. Transesophageal echocardiography revealed that the mitral valve had been distorted by the long body of the On-X valve. We replaced it with an Edward Mira mechanical valve and the mitral regurgitation returned to its preoperative level.

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