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  • Print publication year: 2010
  • Online publication date: May 2010

18 - Infective endocarditis

from Section 2 - Practical issues in transesophageal echocardiography

Summary

The long- and short-axis views of the right ventricle (RV) are defined by the corresponding views of the left ventricle (LV), but these two standard echocardiographic imaging planes often transect the RV in an oblique way. Discrete probe manipulations and the proper use of the multiplane capacity of transesophageal echocardiography (TEE) are often necessary to fully visualize the RV. Continuous-wave Doppler plays an important role in the study of pathological conditions of the RV and pulmonary circulation. Abnormalities in the shape and motion of the interventricular septum (IVS) reflect the altered pressure differences between the LV and RV. Tricuspid annular plane systolic excursion (TAPSE) corresponds to wall shortening of the RV free wall along its long axis. The total ejection isovolume (TEI) index or myocardial performance index is a Doppler derived measurement combining systolic and diastolic time intervals as a parameter of global ventricular function.

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