Which size sheath is black?

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Multiple Choice

Which size sheath is black?

Explanation:
Color coding is used in sheath sizing to let you identify the French size at a glance and avoid using the wrong sheath during procedures. In standard color schemes used in many training resources, the black color corresponds to a 9F sheath. That’s why the black-coded option matches 9F, while the other sizes are assigned different colors. This quick visual cue helps prevent vascular injury from an oversized sheath and ensures the chosen sheath matches the devices planned for the case.

Color coding is used in sheath sizing to let you identify the French size at a glance and avoid using the wrong sheath during procedures. In standard color schemes used in many training resources, the black color corresponds to a 9F sheath. That’s why the black-coded option matches 9F, while the other sizes are assigned different colors. This quick visual cue helps prevent vascular injury from an oversized sheath and ensures the chosen sheath matches the devices planned for the case.

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