Keywords:
Cardiac, Arteries / Aorta, Cardiovascular system, Catheter arteriography, CT-Angiography, MR-Angiography, Arterial access, Cost-effectiveness, Aneurysms, Blood, Cardiac Assist Devices, Retrospective, Observational, Performed at one institution
Authors:
F. Di Tosto1, M. Chiocchi1, L. Pugliese2, F. Ricci2, A. U. Cavallo1, M. Forcina2, V. De Stasio1, M. Presicce1, L. Spiritigliozzi2, R. Floris1; 1Rome/IT, 2Roma/IT
DOI:
10.26044/ecr2020/C-10631
Results
We monitored creatinine values in those 78 patients who underwent to the low dose contrast infusion CT protocol after 48 hours, 7 days after and 30 days after the scan. Within these patients only one manifested AKI and was promptly sent to the nephrologist for the appropriate treatment. No more complications were described in other patients.
CT is the gold standard methodic for pre TAVI planning because allows accurate visualization and evaluation of the aortic annulus size, coronary ostia height, arterial calcifications, peripheral vascular accesses and extracardiac finding in order to choose the correct prosthesis size. Undersizing the correct measures can lead to annulus rupture, device migration, or paravalvular regurgitation [5, 6].
Furthermore our study shows that acquisition protocol with low-dose contrast injections [7, 8] allows the operator to adequately visualize the intima of the large vessels and the segments of the aortic valve system in order to obtain adequate measures, even if the opacification and the density of the vascular lumen is low.
Non contrast MRI 2D sequences offer a promising approach, because the aortic root can be visualized and measured without the use of contrast media [9], even if it has some limitations (the precise quantification of calcium on the aortic annulus [10], the operator dependency of the technique, the compliance of patients).