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.
2-17. RETENTION CATHETERS
A retention (indwelling) catheter is ordered to permit continued drainage of the
urinary bladder without repeated catheterization. The catheter commonly used is a self-
retaining urethra catheter (Foley type). This tube has a double lumen: one lumen is for
drainage and the other is for inflation of the retention device (a small balloon at the tip of
the catheter). The retention balloon is inflated with a measured amount of sterile water
following its placement in the bladder. When a retention catheter is used, provision is
usually made for bladder drainage by means of drainage tubing connected to a plastic
drainage bag. Following insertion of the catheter, it is a nursing responsibility to set up
and maintain the drainage system. Aseptic technique in maintaining urinary drainage is
required since the patient is exposed to a source of chronic irritation from the indwelling
catheter and is therefore more susceptible to any source of infection.
2-18. SUPPLIES AND EQUIPMENT
a. Disposable sterile catheterization set, containing:
Catheter (straight or indwelling).
Sterile detergent-disinfectant solution, for cleansing skin, as prescribed.
Water soluble lubricant, sterile.
Protective, sterile drapes.
Sterile specimen container.
b. Specimen label and appropriate laboratory request forms.
c. Floor lamp, adjustable.
d. Portable screen (according as circumstances may require (p.r.n.)).
e. Kelly forceps (p.r.n.).
f. Adhesive tape.