Because both the bladder and the urethra are easily injured and highly susceptible to infection, it is important to stress several precautions in the performance of the procedure.

a. Aseptic Technique. Each catheterization is a potential source of infection if not carried out properly. Most cases of cystitis and other urinary tract infections, which develop after catheterization, are usually caused by improper technique.

b. Lubricated Catheter. The catheter must be well lubricated prior to insertion to reduce friction and trauma to the mucous membrane lining of the urethra and the bladder. The disposable catheterization kits used today contain sufficient lubricant within the kit.

c. Gentle Insertion. The catheter is inserted only far enough to enter the bladder. Use only mild pressure during insertion. Never force a catheter if resistance is met. Stop the procedure and inform the professional nurse.