External Jugular Vein Cannulation

Updated: Apr 17, 2023
  • Author: Gil Z Shlamovitz, MD, FACEP; Chief Editor: Vincent Lopez Rowe, MD, FACS  more...
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External jugular vein cannulation is an integral part of modern medicine and is practiced in virtually every health care setting. Venous access allows sampling of blood, as well as administration of fluids, medications, parenteral nutrition, chemotherapy, and blood products. [1]

This topic describes placement of an intravenous (IV) catheter into the external jugular vein. A similar technique can be used for placement of IV catheters at different anatomic sites.



Indications for external jugular vein cannulation include the following:

  • Repeated blood sampling
  • IV administration of fluid 
  • IV administration of medications 
  • IV administration of chemotherapeutic agents 
  • IV nutritional support
  • IV administration of blood or blood products 
  • IV administration of radiologic contrast agents (eg, for computed tomography [CT], magnetic resonance imaging [MRI], or nuclear imaging)

Note that many institutions will not allow administration of a high-pressure IV contrast agent into an external jugular vein.



No absolute contraindications exist for external jugular vein cannulation.

Peripheral venous access in an injured, infected, or burned extremity should be avoided if possible.

Vesicant solutions can cause blistering and tissue necrosis if they leak into the tissue. Irritant solutions (pH < 5, pH >9, or osmolarity >600 mOsm/L, including sclerosing solutions, some chemotherapeutic agents, and vasopressors) also are more safely infused into a central vein. Therefore, these solutions should only be given through a peripheral vein in emergency situations or when central venous access is not readily available.


Technical Considerations

Veins with high internal pressure become engorged and are easier to access. The use of dependent positioning, proximal compression with a finger, “pumping” via muscle contraction and the local application of heat or nitroglycerin ointment can contribute to venous engorgement.

The external jugular vein begins at the level of the mandible and runs obliquely across and superficial to the sternocleidomastoid (see the image below).

External jugular vein. External jugular vein.

Some patients have double external jugular veins. Placing a patient in the Trendelenburg position, slightly tilting the head to the opposite side, and applying light pressure above the clavicle will help engorge the external jugular vein and facilitate its catheterization. [2]