To measure ICP, insert the catheter into the bolt, using the cm marking on the catheter to gauge insertion depth. 为了测量ICP,将导管插入螺栓,使用导管上的厘米标志来测量插入的深度。
However, if there was unproportional aortic dilatation in left anterior oblique projection, the selected size of catheter should be increased by 1 gauge. ≥43mm时,选择6cm大小的导管。但若左前斜位升主动脉较窦部明显增宽时.则在上述寻管型号的基础上增加1号。