Abstract
We sought to evaluate the significance of Doppler tissue energy (DTE) and stressed echocardiography for diagnosing myocardial contusion (MC) in canines. Ten adult healthy dogs were anesthetized (3% pentobarbital sodium/i.v.) and impacted by BIM-II biological impact machine to induce MC. Conventional and stressed echocardiographies were used for segmental abnormal ventricular wall motions; DTE was also used to detect the abnormal ventricular wall motions and areas of injured myocardial fibers after MC, and the results were compared with those of triphenyl tetrazolium chloride (TTC) staining. The data show that both conventional and stressed echocardiographies identified ventricular wall segmental abnormal motions or even aneurysms. These segments were mainly distributed over the front and middle interventricular walls and anterolateral ventricular wall. The ventricular wall motion scoring and wall motion segment index (WMSI) increased remarkably after MC induction. Compared with TTC staining, the conventional echocardiography showed 100% sensitivity and 66.67% specificity, whereas the stressed echocardiography displayed 100% sensitivity and 88.89% specificity. DTE showed both the sensitivity and specificity of 100% for MC diagnosis. Thus, DTE has higher specificity than conventional and stressed echocardiographies. In conclusion, both DTE and stress echocardiography have higher clinical value for MC diagnosis in canines.
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We thank the Open Fund of State Laboratory of Trauma, Burn and Combined Injury of the Third Military Medical University, China, for financial support. We are also grateful to professors Jiang JX and Yin ZY from the Research Institute of Surgery for their technical and clinical guidance throughout the course of this study.
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Wenhua, D., Xiuqin, X. & Weimin, Z. Doppler Tissue Energy and Stress Echocardiography in the Diagnosis of Myocardial Contusion in Canines. Cell Biochem Biophys 62, 383–389 (2012). https://doi.org/10.1007/s12013-011-9311-4
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DOI: https://doi.org/10.1007/s12013-011-9311-4