Access guidewires

Last revised by Yahya Baba on 20 Sep 2023

Access guidewires are interventional procedures wires used during the first steps of interventions, to secure stable access and sheaths/catheter insertion. They are quickly exchanged for a navigation wire thereafter.

The most common access wires are1:


These wires are designed to be as atraumatic as possible, and they generally are:

  • short

  • 0.018-inch (comes with a standard 21-gauge micropuncture set)

  • a floppy straight atraumatic tip

  • have a metal core without an outer braided layer1

  • hydrophobic

    • because hydrophilic wires are slippery and hard to stabilize during the initial exchanges

    • the needle tip may shear the hydrophilic wire coating with subsequent embolization2

See also

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