Why should the catheter bag be kept below the bladder?

• A. To make drainage faster.
• B. To prevent backflow and reduce infection risk.
• C. To reduce gravity.
• D. To comply with equipment appearance.

Answer: (B)

Keeping the catheter bag below the bladder relies on gravity to move urine from the bladder into the collection bag. When the bag stays below bladder level, urine flows downward and backflow into the bladder is unlikely. If the bag is higher than or at bladder level, urine can reflux back into the bladder, increasing the risk of a urinary tract infection and other complications. So, positioning the bag below the bladder promotes continuous, safe drainage and reduces infection risk. Secure the tubing and keep the bag below waist level to maintain proper flow.