[An experimental study on the changes in the biomechanical characters of rat thoracic aorta].
The changes in biomechanics of rat thoracic aorta at different post mortem interval (PMI) (0-7 d) were observed when it was stretched in one direction. Some significant changes were disclosed by statistical analyses. Maximum stretch, maximum strain and maximum energy showed a significant relationship with PMI, the coefficients of determination being 0.822, 0.716 and 0.669 respectively, P < 0.001. The stretch experiment of thoracic aorta may be a novel method to determine PMI.
Zhang
Fu
F
West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China.
Zhou
Ruiqing
R
Chen
Xiaogang
X
Liao
Zhigang
Z
D000818:Animals; D001013:Aorta, Thoracic / Q000473:pathology*; D001696:Biomechanical Phenomena; D008297:Male; D011180:Postmortem Changes; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D013314:Stress, Mechanical; D013997:Time Factors