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  Indian J Med Microbiol
 

Figure 3 :(a) Before beta-blocker therapy Color flow Doppler shows systolic turbulence (white arrows) in the LVOT Indicating obstruction and significant mitral regurgitation (orange arrows). Fig.3b: After beta-blocker therapy, color Doppler shows no turbulence in LVOT suggesting absence of obstruction and remarkable decrease in the severity of mitral regurgitation (orange arrows).

Figure 3 :(a) Before beta-blocker therapy Color flow Doppler shows systolic turbulence (white arrows) in the LVOT Indicating obstruction and significant mitral regurgitation (orange arrows). Fig.3b: After beta-blocker therapy, color Doppler shows no turbulence in LVOT suggesting absence of obstruction and remarkable decrease in the severity of mitral regurgitation (orange arrows).