Comparative characteristics of the morphometric parameters of the abdominal part of aorta and its unpaired branches in the age and sex aspects

Computer tomograms of the abdominal part of the aorta and its unpaired branches of adults belonging to three age groups are analyzed: the first, the second mature, and the elderly. It has been established that individual morphometric parameters of the abdominal part of the aorta and its unpaired branches in men and women significantly change with age. It is proved that the diameter of the aorta at different levels significantly increases with age from the first mature age to the elderly by an average of 5 mm. In addition, in men, the length of the abdominal aorta, celiac trunk and main trunk of the superior mesenteric artery do not change with age. In women, the length of the celiac trunk increases with age by 5,9 mm, the length of the main trunk of the superior mesenteric artery - by 17 mm. It can be assumed that this fact is due to the structural features of the connective tissue structures of the arterial wall in women, and, in particular, the elastic framework. The angle of discharge of the celiac trunk in men changes unevenly with age - in the second period of mature age, there is a statistically significant decrease on average of 12,3°, then in old age an increase of 15°. Moreover, in women, the values of this indicator vary more evenly. The angles of discharge of other vessels did not show a clear age dependence, since this parameter is largely due to the constitutional features. The aorto-mesenteric distance changes with age only in women. In old age, it is on average 4,4 mm larger than in the first period of mature age. In general, a number of morphometric parameters of the abdominal part of the aorta and its unpaired branches significantly changes with age. The findings are important for endovascular interventions.

abdominal aorta, aortic bifurcation, celiac trunk, superior mesenteric artery, inferior mesenteric artery, left gastric artery, splenic artery, common hepatic artery, multislice computed tomography, aorto-mesenteric distance