Valve-In-Valve TAVI in a Patient With Dextrocardia, Situs Inversus, and Challenging Commissural Alignment

右位心、内脏反位和瓣膜交界处对位困难患者的瓣中瓣经导管主动脉瓣置换术

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Abstract

Valve-in-valve transcatheter aortic valve implantation (ViV-TAVI) for dextrocardia is challenging. An 81-year-old man with dextrocardia and situs inversus developed prosthetic aortic stenosis. Loading Evolut FX+ C-tab 180° upside down in a delivery catheter facilitates commissural alignment during ViV-TAVI in dextrocardia. To accommodate anatomical variations, the flush-port position can be adjusted. In this case, the flush port was positioned 5-o'clock (60° from the usual 3-o'clock position) to align the TAVI valve with former prosthesis, as the former prosthetic valve commissure was oriented 60° from native commissures to preserve coronary access for abnormal left coronary artery originating from native commissures. This case illustrates strategies for commissural alignment during ViV-TAVI in dextrocardia.

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