AN ANALYSIS OF CIRCUMFERENTIAL STRESS ACROSS DESENDING AORTIC AND COMMON ILIAC ARTERIAL WALL IN INFRARENAL AORTIC ANEURYSM PATIENTS AND HEALTHY PERSONS
- VernacularTitle:腹主动脉瘤与正常降主及髂总动脉壁平均应力分析
- Author:
Qingsheng LU
;
Zaiping JING
;
Jianping LU
- Publication Type:Journal Article
- Keywords:
aortic aneurysms, abdominal;
hemodynamics;
stress, mechenical
- From:
Medical Journal of Chinese People's Liberation Army
2001;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Aortic aneurysms appear to have a predilection for the infrarenal aorta. This study is to explain the predilection by using the analysis of wall circumferential tension and stress. 20 healthy persons and 6 infrarenal aortic aneurysm patients were studied. The blood pressures were endoluminally recorded at different sites from the descending aorta to the common iliac artery. The radius of vessel and the thickness of vascular wall were measured by MRI scanning. The wall circumferential tension and stress were calculated. The results showed that the greatest wall stress was at the infrarenal aorta and at the body and exit of aneurysms. Common iliac artery's wall stress was decreased, but greater than thoracic, suprarenal aorta and entrance of aneurysms. These findings suggest that the grent wall circumferential stress may be one cause to make infrenal aorta damageable and be prone to form aneurysms. The increasing stress of the aneurymls exit and common iliac artery′s wall can promote aneurysms to invade distant and common iliac artery.
