Proximal jet size by Doppler color flow mapping predicts severity of XXXX . Clinical studies.

@entity1 @entity339 @entity997 @entity337 @entity1162 @entity340
BACKGROUND: Recent studies have shown that many instrument and physiological factors limit the ability of color Doppler total jet area within the receiving chamber to predict the severity of @entity340 . In contrast, the proximal or initial dimensions of the jet as it emerges from the orifice have been shown to increase directly with orifice size and to correlate well with the severity of @entity337 . Only limited data, however, are available regarding the value of proximal jet size in @entity339 , and it has not been examined in short-axis or transthoracic views. The purpose of the present study, therefore, was to evaluate the relation between proximal jet size and other measures of the severity of @entity339 . METHODS AND RESULTS: In 49 @entity1 , the anteroposterior height of the proximal jet as it emerges from the mitral valve was measured in the @entity1162 view; proximal jet width and area were measured in the short-axis view at the same level. Results were compared with regurgitant volume and fraction by pulsed Doppler subtraction of aortic and mitral flows in 47 @entity1 without more than trace @entity337 ; with angiographic grade determined within 24 hours in 33 catheterized @entity1 ; and with angiographic regurgitant fraction in 13 @entity1 who were in normal sinus rhythm and had no significant aortic and @entity997 . Proximal jet height, width, and area correlated well with Doppler regurgitant volume and fraction (r = .86 to .95; SEE = 7.7 to 9.0 mL; 5.9% to 7.3%). Proximal jet size could also be used to distinguish angiographic grades of @entity339 with minimal overlap (P < .0001) and correlated well with angiographic regurgitant fraction (r = .85 to .91; SEE = 4.1% to 5.1%). CONCLUSIONS: Proximal jet size correlates well with established measures of the severity of @entity339 . It is conveniently available with transthoracic clinical scanning and should be useful in the routine evaluation of @entity1 with @entity339 .
