An objective and reproducible method for quantification of aortic regurgitation after TAVI
2014; European Association of Percutaneous Cardiovascular Interventions; Volume: 10; Issue: 3 Linguagem: Inglês
10.4244/eijy14m05_06
ISSN1969-6213
AutoresCarl Schultz, Tristan Slots, Gerald Yong, Jean‐Paul Aben, Nicolas M. Van Mieghem, Martin J. Swaans, Zouhair Rahhab, Nahid El Faquir, Robert van Geuns, Gijs Mast, Felix Zijlstra, Peter P.T. de Jaegere,
Tópico(s)Aortic aneurysm repair treatments
ResumoWe describe a new semi-automated method that measures aortic regurgitation (AR) on contrast aortography with the objectives of reducing the inter-observer variability and standardising image acquisition.Aortograms from three participating centres were reviewed to generate the following quality criteria: entire left ventricle and aortic root in view, descending aorta or TOE probe not over-projected, breath hold, no table motion, and adequate contrast opacification of the aortic root. AR was visually graded (Sellers) and was quantified by measuring the area under time-contrast density curves in the aortic root (reference) and the left ventricle. Quality criteria were met in 44 retrospectively identified aortograms and in 22 (69%) of 32 prospectively collected aortograms. The visual AR grade (Sellers) was highly correlated with time-density measurements including relative area under the curve (RAUC) and qRA index (r=0.81 and 0.83, respectively, p<0.001). Inter-observer reproducibility of visual grading was moderate (kappa 0.47-0.60, p<0.001). Inter-observer measurement of RAUC and qRA index were highly correlated (r=0.98, p<0.001) and showed a high level of agreement.Quantification of aortic regurgitation by measurement of time-density changes on contrast aortography may improve the reproducibility of AR assessment in the catheter laboratory. Steps for standardised aortography acquisition are proposed.
Referência(s)