What is the best practice for inflating the balloons of silicone Foley catheters?
Sterile water is generally preferred over normal saline for inflating Foley catheter balloons, particularly in long-term catheterizations. While both sterile water and normal saline are considered acceptable for short-term use (5 days or less), sterile water is recommended for durations beyond 5 days due to its lower risk of causing catheter balloon malfunction or crystallization.
Research indicates that sterile water reduces the chances of balloon failure and associated complications. Some clinical guidelines also emphasize the importance of inflating the balloon with sterile water to the specific volume indicated on the catheter to ensure proper function and reduce risks such as dislodgement or trauma. Using less than the recommended volume (e.g., 10 mL in a 30 mL balloon) may cause the balloon to inflate irregularly and increase the likelihood of the catheter slipping out.