Sounding before catheterization (small4phone)

Description: I need to examine my patient's urethra before catheterization. i'm using bougies ranging from size 16 to 23, and with the larger sizes, i'm finding a section of the urethra where the bougies pass with more resistance than they should. i'm carefully dilating it, and now i'm confident that the catheterization procedure will go smoothly.  filming includes both pov format and shots from the side.