Detection of Tricuspid Regurgitation by Contrast Echocardiography : SYMPOSIUM ON CURRENT PROBLEMS IN VALVULAR HEART DISEASE

概要

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Contrast echocardiography with simultaneous M-mode echocardiography was performed in 77 cases of tricuspid regurgitation (TR) and 168 cases having no TR (non-TR). The echocardiographical characteristics of TR were as follows: 1) By the subxiphoid approach, a contrast appeared in the inferior vena cava during systole. In some cases of non-TR, a similar appearance was noted but limited to the atriosystolic or late systolic-to-early diastolic phases. Such confusing cases should be excluded by the simultaneous observation of the M-mode contrast echogram. 2) By apical four-chamber view, a negative contrast echo above the tricuspid valve and subsequent back and forth movements of the contrast across the valve were useful. This movement, however, may be misleading on two-dimensional echo and the M-mode echocardiogram was also necessary to obtain the exact timing and the direction of regurgitant flow. 3) Presence of the dilated inferior vena cava_ The sensitivity of this method was extremely high, and the specificity was also excellent for TR.
社団法人日本循環器学会の論文
1982-04-20