What is the approximate daily risk of catheter-associated urinary tract infection when a catheter remains in place?

What is the approximate daily risk of catheter-associated urinary tract infection when a catheter remains in place?

• A. 1% per day
• B. 5% per day
• C. 10% per day
• D. 15% per day

Answer: (B)

The main idea is that the risk of a catheter-associated urinary tract infection grows the longer a catheter stays in place. A commonly used estimate is about 5% risk per day of catheterization. This figure reflects how bacteria can seed the catheter and form biofilms, gradually overcoming the body's defenses each day. Because the risk accumulates, even a short delay in removal can lead to a meaningful increase in the chance of infection—roughly 40–50% by a week or two if you apply this daily risk assumption. This is why minimizing catheter duration and using proper catheter care are key preventive steps. The other per-day figures would either understate (1%) or overstate (10% or 15%) the typical daily risk seen in clinical practice.

The main idea is that the risk of a catheter-associated urinary tract infection grows the longer a catheter stays in place. A commonly used estimate is about 5% risk per day of catheterization. This figure reflects how bacteria can seed the catheter and form biofilms, gradually overcoming the body's defenses each day. Because the risk accumulates, even a short delay in removal can lead to a meaningful increase in the chance of infection—roughly 40–50% by a week or two if you apply this daily risk assumption. This is why minimizing catheter duration and using proper catheter care are key preventive steps. The other per-day figures would either understate (1%) or overstate (10% or 15%) the typical daily risk seen in clinical practice.