Application value of echocardiography in establishing rabbit models of diastolic heart failure
10.3969/j.issn.2095-4344.2015.40.005
- VernacularTitle:超声心动图在构建舒张性心力衰竭模型兔过程中的应用价值
- Author:
Liyuan GONG
;
Wei HUANG
;
Jianming CHEN
;
Yangyuan LIN
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2015;(40):6418-6422
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Related medical researches have shown that the incidence of simple diastolic heart failure is higher than that of systolic heart failure. OBJECTIVE:To investigate the application value of echocardiography in the monitoring of rabbit models of simple diastolic heart failure. METHODS: Sixty healthy male New Zealand rabbits were included in this study. The pressure overload hypertrophy rabbit model was established by the method of abdominal aortic coarctation. Rabbits were randomly divided into surgical group and sham group. Al rabbits were subjected to the echocardiography and left heart catheterization, the left ventricular end-diastolic pressure and relaxation time constants were measured to judge the presence of simple diastolic heart failure. RESULTS AND CONCLUSION:Compared with the sham group, the aortic annular diameter was significantly reduced before surgery and at 1, 4, 8 weeks after surgery in the model group (P < 0.05); the peak of retrograde velocity at atrial contraction was decreased in the model rabbits at 8 weeks after surgery (P< 0.05); the left ventricle dry weight, ratio of left ventricle dry weight/body weight, left ventricular posterior wal thickness, systolic pressure, interventricular septum, left ventricle systolic pressure, and left ventricular end-diastolic pressure were obviously increased at 8 weeks after surgery (P < 0.05). Experimental findings indicate that rabbit models of simple diastolic heart failure are successfuly established, and echocardiography can effectively monitor the left ventricular systolic and diastolic functions in cardiac hypertrophy.
