Echocardiographic and Doppler parameters used for grading of TR severity.
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Presence of three or more of the five parameters shown defines severity grade (mild, moderate or severe). RV indicates right ventricular; RA, right atrium; IVC, inferior vena cava; VC, vena contracta; PISA, proximal isovelocity surface area. * Unless there are other reasons for RV or RA enlargement (e.g. pulmonary hypertension, pulmonary valve disease). Echocardiographic and Doppler parameters used for grading of TR severity.
创建时间：
2015-08-20
