title: [Study of quantitative measurement of tricuspid regurgitation using Doppler echocardiography].
abstract: The volume of tricuspid regurgitation (VTR) was measured using two-dimensional color and continuous wave Doppler echocardiography. The value of VTR showed significant correlations with the maximum area (r = 0.77), the maximum distance (r = 0.73) and the maximum width (r = 0.59) in the regurgitant signal, right ventricular pressure (r = 0.63) and the diameter of right atrium (r = 0.40). When the tricuspid regurgitation was divided into two types in viewpoint of its flow direction-flow directed to center of atrium (A type) and that directed to atrial septum (B type), VTR showed closer correlations with the maximum area (r = 0.90) and the maximum distance (r = 0.87) in A type. But in B type, their relativities were decreased (r = 0.51 and r = 0.40, respectively). The VTR was well related with the severity of tricuspid regurgitation based on the Miyatake's classification. This evidence indicated that the quantitative measurement of tricuspid regurgitant volume using two-dimensional color and continuous wave Doppler echocardiography is more accurate and useful compared with conventional semi-quantitative method.
authors.affiliation: Central Clinical Laboratory, Kanazawa University Hospital.
authors.forename: Y
authors.initials: Y
authors.lastname: Takizawa
authors.forename: H
authors.initials: H
authors.lastname: Futamata
authors.forename: N
authors.initials: N
authors.lastname: Yoshimoto
authors.forename: H
authors.initials: H
authors.lastname: Mukai
authors.forename: F
authors.initials: F
authors.lastname: Matsubara
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014262:Tricuspid Valve Insufficiency / Q000175:diagnosis*