First experience of using NVT Allegra system for transcatheter implantation of aortic valve and prospects for routine interventions on aortic valve in Ukraine

Main Article Content

G. B. Mankovsky
Ye. Yu. Marushko
S. O. Kuzmenko
G. I. Yemets
I. M. Yemets


The aim – to present the first experience in Ukraine of using the NVT Allegra device for the procedure of transcatheter implantation of the aortic valve prosthesis to patients with high surgical risk with severe aortic stenosis.
Materials and methods. The presented clinical cases included two patients of age 90 and 80 years with severe aortic stenosis, mean transaortic blood flow gradients of 32 and 76 mm Hg and aortic valve areas of 0.4 and 0.6 cm2, respectively. Both patients were recognized as high surgical risk patients.
Results and discussion. Both patients underwent transcatheter implantation of the aortic valve prosthesis through transfemoral access. After implantation, the average gradients of the transaortic blood flow were 13 and 8 mm Hg respectively. Residual paravalvular insufficiency was mild in both cases. Second patient was implanted permanent pacemaker due to persistent complete AV block.
Conclusions. The NVT Allegra system for transcatheter implantation of the aortic valve prosthesis is a third generation device that enables successful and safe intervention of the aortic valve.

Article Details


transcatheter aortic valve implantation, TAVI


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