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Seldinger's technique

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Method for introducing a catheter into a vessel via a needle puncture. The vessel is located with a special needle that contains a wire; the needle is removed. The catheter is threaded into the vein while being guided by the wire over which it is moving. The wire is then removed from the needle. Used in angiography, cardiac catheterization, and cannulation of the central venous system.

We thank Joe Segen for information submitted.


  • Sven-Ivar Seldinger:
    Catheter replacement of the needle in percutaneous arteriography (a new technique).
    Acta Radiologica, Stockholm, 1953, 39: 368-376.

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