Why is keeping the catheter bag at the correct height and avoiding dependent loops important?

• A. Prevents backflow and contamination; ensures gravity drainage; reduces risk of reflux into the bladder and CAUTI
• B. Increases patient comfort
• C. Speeds drainage
• D. Has no effect on infection

Answer: (A)

Keeping the urine collection bag below the level of the bladder allows urine to drain by gravity, preventing backflow toward the bladder. This reduces contamination and lowers the risk of catheter-associated urinary tract infection. Avoiding loops in the tubing prevents urine from pooling or kinking, which can interrupt drainage or promote backward flow. Together, these practices keep a closed, continuous drainage path and minimize reflux into the bladder, which is why this approach lowers infection risk.