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Figure 8 Representative Examples of Patients in Which Difficulties With Transcatheter Aortic Valve Replacement May Be Encountered
Panels A and B demonstrate an example of a patient with an oval shape of the aortic annulus. The diameter of the aortic annulus on the coronal view (A) was 27.3 mm, whereas the annulus diameter on the sagittal view (B) was 20.3 mm. A significant oval shape of the aortic annulus may increase the risk of paravalvular leakage after percutaneous aortic valve replacement. Panel C demonstrates a patient in which the length of the coronary leaflet exceeded the distance between the aortic annulus and the ostium of the left coronary leaflet (distances were 13.4 and 11.6 mm, respectively). There is an increased risk of coronary occlusion by the coronary leaflet or the prosthesis sealing annular cuff in these patients.
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