Mechanical haemolytic anaemia assessed with four-dimensional flow cardiac magnetic resonance

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Abstract

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.

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Uchida, W., Tokuda, Y., Takehara, Y., & Usui, A. (2019). Mechanical haemolytic anaemia assessed with four-dimensional flow cardiac magnetic resonance. European Journal of Cardio-Thoracic Surgery, 56(4), 813–814. https://doi.org/10.1093/ejcts/ezz031

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