As mentioned, the femoral artery is considered a great portal to vital parts of the body. Cardiac catheterization, a treatment for many heart conditions, uses a long thin tube that can be inserted in a variety of arteries, including the groin. The femoral artery is the preferred entrance for a cardiac catheter, because of its larger diameter. A 6F catheter, which measures 2 millimeters, is the most common gauge size for this type of procedure. The average femoral artery diameter ranges from 2.5 to 9.5 millimeters.

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