Detection of Determinants of Functional Aortic Regurgitation in Patients With Ascending Aorta Aneurism by Transesophageal Echocardioscopy
We used transesophageal echocardioscopy for the study of effects of linear parameters of the aortic root and characteristics of its subvalvular space (area of subvalvular space of the aortic root during diastole and aortic cusps coaptation height) on severity of aortic regurgitation in patients with aneurism of ascending aorta and anatomically unchanged aortic valve (AV), i.e. so-called functional aortic regurgitation (FAR). We found that appearance of FAR was associated with coefficient of disproportion sinotubular ridge/fibrous annulus of AV>1.67, aortic cusps coaptation height >0.47 cm and area of subvalvular space of the aortic root >0.49 cm <sup>2</sup>. Respective values >2.23, >1.07 cm, 0.49 cm <sup>2</sup> evidenced for the presence of pronounced FAR.