Answer
Mar 23, 2026 - 07:33 PM
Catheter size depends on the type of catheter and individual needs. Intermittent and indwelling (Foley) catheters are measured using the French (Fr) scale, while external catheters are typically sized based on anatomical fit, such as circumference.
Because sizing can vary from person to person, it is important to follow healthcare provider guidance and product recommendations when selecting a catheter. Using the correct size helps support proper function and comfort.
