[Correct use of ureteral guide wires].

A knowledge of the correct use of ureteral guides-wires has become a necessity for most endo-urological manipulations. The basic guide-wire must be from 32 to 150 cm in length, and be sufficiently robust and flexible. Fluoroscopic control of the manipulation of the guide is essential. Numerous minor incidents may arise in the course of the maneuver, and these must be anticipated.