Saturday June 20, 2009

Q: What does it mean when you say "7 french catheter" ?


Answer: "French" is the size of catheters in outside diameter.

1 French = 0.33 mm

and so,
2 French = 0.66 mm,
3 French = 0.99 mm

7 French = 7 x 0.33 = 2.31 mm in outside diameter