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| The diagnostic analysis of apical hypertrophic cardiomyopathy with left ventricular opacification |
| LI Ying |
| Department of Ultrasonography, Shengjing Hospital of China Medical University, Shenyang 110004, China |
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Abstract Objective: To improve the contrast of myocardium and cardiac cavity by left ventricular opacification, and to diagnose and evaluate apical hypertrophic cardiomyopathy. Methods: We selected 21 patients clinically suspected of apical hypertrophic cardiomyopathy with abnormal change of electrocardiogram, excluded diseases such as high blood pressure, aortic valve disease and so on which may cause secondary myocardial hypertrophy. There was no other segmental myocardial abnormal thickening of the change in the two-dimensional echocardiography imaging, only the apex of heart was not clear by image display forthe near field artifacts and acoustic window limit, gas interference or by reason of patients with obesity caused. Twenty-one cases of patients undergoed left ventricular opacification, organized and analysis the images. Twenty patients without heart disease as a normal control group. Results: Twenty-one cases of patients with imaging process did not feel any discomfort. The ultrasound imaging of left ventricular opacification success showed apex of 20 cases(95.2%). Including 2 cases of apex of myocardial no obvious thickening, 18 patients with apical myocardial thickening, thickness of about 14~17 mm. The apical apical segment of the myocardium with a radial distribution of a large number of trabeculae and deep recess filled with contrast media. After left ventricular opacification, we can clearly observe that the left ventricular apex of the left ventricle is obviously narrowed or even completely occluded. One case(4.8%) patients with left ventricular ejection fraction, contrast agent fails to reach the apex, failed to development. There was no significant difference between EF and control group in apical hypertrophic cardiomyopathy, but EDV and ESV were significantly lower than those in control group. Conclusion: Left ventricular opacification can increase the diagnostic accuracy of apical hypertrophic cardiomyopathy by improving the clarity of the cardiac ultrasound image, measuring the thickness of the apical myocardium accurately, and judging the change of the cardiac cavity size.
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Received: 07 March 2017
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