Preoperative computer tomography evaluation in transcatheter aortic valve replacement (TAVI)
- Groudeva, D. Trendafilova, V. Stoynova, Y. Dzhorgova, G. Nachev
Transcatheter aortic valve replacement is rapidly emerging technique alternative to surgery in high risk patients. maging and especially computer tomography is important in preoperative assessment of the aortic ring and the prosthetic valve choice. The aim of this study is to share authors initial experience in CT assessment of the aortic ring prior to Transcatheter aortic valve replacement. 49 patients (mean age 76,55) underwent 320 rows MDCT (Acquilon One) prior TAVI. Protocol involved scanning from thoracic inlet to common femoral arteries. Aortic root size, aortic diameter at the level of coronary sinuses and the sinotubular junction and distance to coronary ostia were evaluated on a Vitrea work station. MDCT established maximal aortic ring diameter from 18 to 31 mm mean 25,04 mm while the lesser rate was from 16 to 21 mm. Accordingly positionned prostheses were in 34,75% No. 23, in 49% – No. 26 and in16,3% – No. 29. MDCT is crucial in aortic valve assessment prior to TAVI in experienced hands and multidisciplinary team.
Key words: TRANSCATHETER AORTIC VALVE REPLACEMENT (TAVI). MDCT AORTIC VALVE ASSESSMENT