Systematic Evaluation of Current Possibilities to Determine Left Ventricular Volumes by Echocardiography in Patients after Myocardial InfarctionReport as inadecuate




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Purpose: The aim of the present study was to evaluate the diagnostic accuracy for quantification of left ventricular LV volumes and LV ejection fraction LVEF with current echocardiographic methods of planimetry for analysis of LV remodeling after myocardial infarction in daily clinical routine. Methods: 26 patients were investigated directly after interventional therapy at hospital pre-discharge and at 6 month follow-up. Standardized 2D transthoracic native and contrast echocardiography were performed in all patients. Due to methodological aspects the results of LV volumes and LVEF using native echocardiography were compared to the results of LV opacification LVO imaging for analysis in mono-, bi- and triplane data sets using the Simpson’s rule. In addition corresponding multidimensional data sets were analyzed. Results: The assessment of LV volumes and LVEF is more accurate with contrast echocardiography. The comparison of LV volumes and LVEF shows significant increases using contrast echocardiography p < 0.001. Larger left ventricular end-diastolic volumes LVEDV are measured at follow up p < 0.05. Significant differences p < 0.001 are found for the determination of LVEDV and LVEF relating to apical mono-, bi-, tri- and multiplane data sets. Standard deviations of the triplane approach, however, are significantly lower than using other modalities. Conclusion: Depending on the localization of the myocardial infarction LV volumes and LVEF are less reliably evaluated using the mono- or biplane approach. According to standardization and simultaneous acquisition of all LV wall segments the triplane approach is currently the best approach to determine LV systolic function. In addition, contrast echocardiography is indicated to improve endocardial border delineation in patients using the triplane or multiplane approach. To our knowledge the present study is the first systematic evaluation of all current possibilities for determination of LV volumes and LVEF by native and contrast echocardiography.

KEYWORDS

Contrast Echocardiography; Left Ventricular Systolic Function; Left Ventricular Volumes; Remodeling; Myocardial Infarction; LVO Imaging

Cite this paper

S. Stoebe, A. Tarr, T. Trache, J. Kluge and D. Pfeiffer -Systematic Evaluation of Current Possibilities to Determine Left Ventricular Volumes by Echocardiography in Patients after Myocardial Infarction,- Open Journal of Medical Imaging, Vol. 2 No. 2, 2012, pp. 68-75. doi: 10.4236-ojmi.2012.22012.





Author: Stephan Stoebe, Adrienn Tarr, Tudor Trache, Jens-Gerrit Kluge, Dietrich Pfeiffer

Source: http://www.scirp.org/



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