From the Research
Sterile water is generally better for flushing Foley catheters with sediment build-up compared to normal saline. When flushing a catheter with sediment, use 30-50 mL of sterile water instilled gently using a sterile syringe via the catheter port. This should be done using aseptic technique to prevent introducing infection. Sterile water is preferred because normal saline can potentially contribute to crystal formation due to its sodium content, which may worsen sediment build-up rather than resolve it. The hypotonic nature of sterile water helps dissolve mineral deposits and sediment more effectively. However, it's essential to note that routine catheter flushing is not recommended unless specifically ordered by a healthcare provider, as unnecessary manipulation of the catheter system increases infection risk. If sediment build-up persists despite flushing attempts, the catheter may need to be replaced. Always follow your facility's protocols and the ordering provider's instructions regarding catheter care.
Some studies have compared the use of normal saline and sterile water for catheter maintenance, but the most recent and relevant study for this specific question is not directly provided in the given evidence. However, the general principle of using sterile water for flushing to avoid introducing infection and to effectively dissolve sediment is supported by the understanding of catheter care principles 1. The use of normal saline in other contexts, such as for locking ports in oncology practice, does not directly apply to the flushing of Foley catheters with sediment build-up 2.
Key points to consider:
- Sterile water is preferred for flushing Foley catheters with sediment build-up.
- Normal saline may contribute to crystal formation and worsen sediment build-up.
- Aseptic technique should be used when flushing the catheter to prevent infection.
- Routine catheter flushing is not recommended unless ordered by a healthcare provider.
- If sediment build-up persists, the catheter may need to be replaced.
Given the information and prioritizing morbidity, mortality, and quality of life, the recommendation is to use sterile water for flushing Foley catheters with sediment build-up, as it is the most effective and safest option based on the principles of catheter care and the potential risks associated with normal saline use in this context 1, 3.