Femoral vein

This route of insertion is only occasionally used because of the obvious risk of the initiation of a significant deep venous thrombosis. However, it is an extremely valuable choice in circumstances due to trauma, burns, or other pathology which may have excluded the neck and upper limb veins. The common femoral vein lies medial to the common femoral artery as it passes deep to the inguinal ligament and the upper aspect of the femoral triangle. The two vessels are closely apposed. The introducing cannula or needle syringe assembly should be inserted through the tissues of the femoral triangle overlying the vein at an angle of approximately 45° and 1 cm medial to the arterial pulsation. There is usually no difficulty in puncturing the vein lumen; the needle should be advanced and rotated as in previous techniques and the guidewire gently passed through into the vena cava.

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