Which size sheath is blue?

Which size sheath is blue?

• A. 7F
• B. 8F
• C. 9F
• D. 10F

Answer: (B)

Color coding on introducer sheaths is used in the cath lab to identify the French size at a glance, reducing the chance of selecting the wrong sheath during a procedure. In most practice sets, the blue color corresponds to an 8F sheath. The 8F size is about 2.66 mm in outer diameter, which is large enough for many diagnostic and interventional devices while still being used through the arterial access with careful technique. This quick color cue helps ensure the team uses the appropriate sheath to minimize vascular injury and bleeding while advancing catheters and devices. Keep in mind that color schemes can vary by manufacturer, so always check the actual labeling on the sheath.

Color coding on introducer sheaths is used in the cath lab to identify the French size at a glance, reducing the chance of selecting the wrong sheath during a procedure. In most practice sets, the blue color corresponds to an 8F sheath. The 8F size is about 2.66 mm in outer diameter, which is large enough for many diagnostic and interventional devices while still being used through the arterial access with careful technique. This quick color cue helps ensure the team uses the appropriate sheath to minimize vascular injury and bleeding while advancing catheters and devices. Keep in mind that color schemes can vary by manufacturer, so always check the actual labeling on the sheath.