What is a complicating factor in urinary catheterization?

What is a complicating factor in urinary catheterization?

• A. It causes the inability to urinate.
• B. It may increase the concentration of urine.
• C. It can allow bacteria to enter the bladder.
• D. It is related to kidney infections.

Answer: (C)

Catheterization introduces a foreign device into the urinary tract, which can bypass the body's natural defenses and give bacteria a direct route into the bladder. The most relevant complication is that bacteria can enter and colonize the bladder, leading to a urinary tract infection. This risk persists even with careful technique and is amplified the longer the catheter remains in place because bacteria can form biofilms on the catheter surface. Proper sterile technique, minimizing catheter use, and ensuring a closed drainage system help reduce this risk. The other options don’t reflect the immediate mechanism of a catheter-related complication: it doesn’t inherently cause an inability to urinate or concentrate urine, and while infection can ascend to the kidneys, the direct concern is bladder infection from bacterial entry.

Catheterization introduces a foreign device into the urinary tract, which can bypass the body's natural defenses and give bacteria a direct route into the bladder. The most relevant complication is that bacteria can enter and colonize the bladder, leading to a urinary tract infection. This risk persists even with careful technique and is amplified the longer the catheter remains in place because bacteria can form biofilms on the catheter surface. Proper sterile technique, minimizing catheter use, and ensuring a closed drainage system help reduce this risk. The other options don’t reflect the immediate mechanism of a catheter-related complication: it doesn’t inherently cause an inability to urinate or concentrate urine, and while infection can ascend to the kidneys, the direct concern is bladder infection from bacterial entry.