Catheter sizes include the length and diameter, which is measured in French or Cherrier sizes. Catheter French sizes generally start very small at 5 or 6 French and progresses upward in size in even 2 French size increments, through to as large as 24 French.
For adults, many will use between a 10 French to 16 French size catheter and a male or female length depending on your gender, but your healthcare provider will help to decide the right size for you.
For children, boys may need to use a pediatric length or longer 12-16 inch, 30-40cm, length catheter to ensure it is long enough to reach the bottom of the bladder and provide complete emptying. Girls can actually use either a male or a female short style catheter as the female urethra is much shorter. Any child who has had surgical creation of a catheterizable stoma will need to use a male length catheter to ensure it can reach all the way to the bottom of the bladder.
The French size required is dependent upon the anatomy of the urethra or stoma as well your or your child’s body size.
after age appropriate avoid bag bent best big bleeding blood cath cathing CH child children closed-system collection common connector contain contents correct coude curved DEHP DHP diameter discreet discretion dispose don't drink drinking end find fluid forever FR french frequency funnel happens holiday home hydrophilic if infection infections insert inserted introducer issues keep latex length liquid long low friction lubricated material materials measure normal nothing often once one time output prevent problems public restroom reusable right set sick side effects single size slippery stop store symptoms throw tiemann time tip toilet trash travel trip uncomfortable urethra urine use UTI water weekend wet why young