Importance of the right ventricle in valvular heart disease |
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| Authors: | Nagel, E. Stuber, M. Hess, O. M. |
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| Affiliation: | Cardiology, University Hospital Zürich, Switzerland
*Institute of Biomedical Engineering, Federal Institute of Technology Zürich, Switzerland |
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| Abstract: | The importance of the right ventricle as a determinant of clinicalsymptoms, exercise capacity, peri-operative survival and postoperativeoutcome has been underestimated for a long time. Right ventricularejection fraction has been used as a measure of right ventricularfunction but has been found to be dependent on loading conditions,ventricular interaction as well as on myocardial structure.Altered left ventricular function in patients with valvulardisease influences right ventricular performance mainly by changesin afterload but also by ventricular interaction. Right ventricularfunction and regional wall motion can be determined with rightventricular angiography, radionuclide ventriculography, two-dimensionalechocardiography or magnetic resonance imaging. However, thecomplex structure of the right ventricle and its pronouncedtranslational movements render quantification difficult. Trueregional wall motion analysis is, however, possible with myocardialtagging based on magnetic resonance techniques. With this techniquea baso-apical shear motion of the right ventricle was observedwhich was enhanced in patients with aortic stenosis. |
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| Keywords: | Right ventricle ventricular function valve disease pulmonary artery pressure ventricular interaction postoperative changes myocardial tagging |
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