Abstract
We sought to investigate the role of two-dimensional stress echocardiography in the early assessment of myocardial contusion. For this purpose, 12 dogs, weighing 11.36 ± 1.50 kg, were selected and the myocardial contusion was experimentally induced. Two-dimensional dobutamine stress echocardiography (DSE) was used to detect abnormal myocardial motions segments at time phases of baseline and 0.5, 2, 4, and 8 h post-wounding. Finally, the above results were compared with pathological findings. The data show that after the dogs were induced to have severe myocardial contusion, 122 segments were found with abnormal myocardial wall motions at 0.5 h post-wounding, 133 segments at 2 h post-wounding, and 142 segments, each, at 4 h and 8 h post-wounding. The wall motion score (WMS) and wall motion score index (WMSI) increased (P < 0.001) as compared with the pre-impaction values. Considering the left ventricular axis view as the standard section, in the 60 segments examined by echocardiography, 54 segments were found to have wall motion abnormalities. Comparing with the results of pathological TTC staining, the sensitivity and specificity were found to be 100 and 66.6%, respectively. It was, therefore, concluded that two-dimensional DSE was a valuable technique in the early diagnosis of myocardial contusion due to its better sensitivity and specificity.
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Acknowledgments
The authors thank the Open Fund of State Key Laboratory of Trauma, Burn and Combined Injury of the Third Military Medical University, China for financial support. The authors are also grateful to professors Jiang JX and Yin ZY from the Research Institute of Surgery for their technical and clinical guidance in this study.
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Du, W., Xiong, X., Yang, W. et al. Dobutamine Stress Echocardiography Assessment of Myocardial Contusion due to Blunt Impact in Dogs. Cell Biochem Biophys 62, 169–175 (2012). https://doi.org/10.1007/s12013-011-9278-1
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DOI: https://doi.org/10.1007/s12013-011-9278-1