Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.
Department of Fundamental Development for Advanced Low Invasive Diagnostic Imaging, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.
Eur J Cardiothorac Surg. 2019 Oct 1;56(4):813-814. doi: 10.1093/ejcts/ezz031.
A 66-year-old woman developed marked haemolytic anaemia 2 years after total aortic arch replacement using a branched Dacron graft. Echocardiography confirmed bicuspid aortic valve stenosis. A four-dimensional flow magnetic resonance imaging revealed a jet flow arising from the aortic valve along with the vortex and turbulent flow inside the kinked prosthetic graft at the ascending aorta. She underwent a reoperation to replace the aortic valve and correct the kinking. The estimated energy loss after intervention was relieved to 2.9 mJ/cardiac cycle from 4.3 mJ/cardiac cycle before intervention. The patient's anaemia resolved immediately after the reoperation.
一位 66 岁女性在使用分支涤纶移植物进行全主动脉弓置换 2 年后出现明显溶血性贫血。超声心动图证实为二叶式主动脉瓣狭窄。四维血流磁共振成像显示，在升主动脉处扭曲的人造移植物内存在起源于主动脉瓣的射流以及涡流和湍流。她接受了再次手术以更换主动脉瓣并纠正扭曲。干预后估计的能量损失从干预前的 4.3mJ/心动周期缓解至 2.9mJ/心动周期。患者在再次手术后立即解决了贫血问题。
