A solution prepared with diluted acetic acid, typically around 5% concentration, is used to fill implanted vascular access devices, such as central venous catheters, to prevent occlusion. This procedure helps maintain catheter patency and functionality between uses. A common mixture involves combining household vinegar with sterile saline solution, although commercially prepared, sterile solutions are also available.
The utility of this method lies in its ability to dissolve or prevent the formation of mineral deposits and biofilms within the catheter lumen, which are common causes of blockage. Regular use helps to extend the lifespan of the catheter, reduce the need for replacement, and minimize the risk of bloodstream infections associated with catheter use. Historically, other solutions were utilized, but acetic acid presents a cost-effective and relatively safe alternative.
