Noninvasive evaluation of normal and abnormal prosthetic valve function

摘要: Noninvasive techniques are helpful in evaluating the function of mechanical prostheses and tissue valves. Combined phonocardiography M-mode echocardiography together with cinefluoroscopy most useful noninvasive differentiating normal from abnormal metallic prosthetic valve function. The intensity opening closing clicks associated murmurs will depend on type valve, heart rate rhythm underlying hemodynamic status. Arrhythmias or conduction disturbances, both, may produce motion patterns that mimic some echocardiographic signs malfunctioning Differentiation thrombus formation ingrowth paravalvular regurgitation dehiscence is possible by techniques. Disc variance, a potentially serious lethal problem older Beall valves, can be readily detected echophonocardiography. With regard to bioprosthetic two-dimensional superior detecting primary failure. In addition, detection vegetations, alignment ring individual leaflet best accomplished echocardiography. Of greater importance patient serving as his her own control follow-up assessment