Are Residual Stenoses After Excimer Laser An ioplasty and Coronary Atherecto y e to Inefficient or a Devices ? Comparison it Balloon

ves. The purpose of this study was to determine whether residual step after exelhner laser angioplasty and atherectomy due to lnemctent t ablation/removal or to undersized devices. wnd. Significant residual stenoses are commonly ob . served afta use of r and athereetomy devices. It Is not known residual ste are due to inefficient or undersized devim r . To determine the relative contribution of these the minimal lumen diameter, percent diameter stenosis and normal reference diameter were measured immediately be . fore and after coronary Interventions in 696 lesions, including tra extraction atheredomy, , ~ j s mechanical ro. tatlonal atb , excimer laser oplasty and conventional . The ratio of the diameter of the device to the diameter VA, a measure of device sizing) and the ratio of the residual lumen diameter after use of the device to the device diameter (RL , a measure of the lency of lumen tnent) were emulated . Results, line diameter sten were similar for all inter-