What is the primary risk factor for CAUTI?

What is the primary risk factor for CAUTI?

• A. Prolonged use of an indwelling catheter
• B. Recent antibiotic use
• C. Female sex
• D. Hospital room cleanliness

Answer: (A)

Prolonged catheterization increases CAUTI risk because the indwelling catheter creates a direct route for bacteria to the bladder, and bacteria readily form biofilms on catheter surfaces. Biofilms protect bacteria from the immune system and antibiotics, so the longer the catheter stays in place, the higher the chance of colonization progressing to infection. This risk accumulates daily, making duration the strongest predictor of CAUTI. Other factors can influence infections in general—recent antibiotic use can affect which organisms appear or their resistance, and female anatomy can predispose to UTIs in non-catheter settings—but when a catheter is in place, the length of time it remains is the dominant factor driving CAUTI risk. Proper catheter care and removing the catheter as soon as it’s no longer needed are essential to minimize this risk.

Prolonged catheterization increases CAUTI risk because the indwelling catheter creates a direct route for bacteria to the bladder, and bacteria readily form biofilms on catheter surfaces. Biofilms protect bacteria from the immune system and antibiotics, so the longer the catheter stays in place, the higher the chance of colonization progressing to infection. This risk accumulates daily, making duration the strongest predictor of CAUTI.

Other factors can influence infections in general—recent antibiotic use can affect which organisms appear or their resistance, and female anatomy can predispose to UTIs in non-catheter settings—but when a catheter is in place, the length of time it remains is the dominant factor driving CAUTI risk. Proper catheter care and removing the catheter as soon as it’s no longer needed are essential to minimize this risk.