Revision as of 03:23, 23 January 2021 by Elcatracho (talk | contribs) (→‎External Links)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)


  • Length: 8-25 cm, inserted through upper arm veins, terminates at axilla.
    • Shorter ones last better than ultrasound guided peripheral IVs.
    • Longer ones can run pressors. [1] and has less complications than central lines.
  • Because they terminate at axilla, are peripheral access, not a central venous catheter.


  • Unable to establish standard peripheral IV
  • Concern for IV dislodging
  • Longer term IV access


  • Overlying skin infection
  • Thrombosis of target vessel

Equipment Needed



  • Arterial puncture
  • One observational study of 403 ED patients showed no catheter-associated bloodstream infections


  • Medications that cannot be run through midlines:
    • Chemotherapy
    • Total parenteral nutrition
  • Length of use: typically 2-7 days, but institution dependent

See Also

Vascular access types

External Links


  1. The Utility of Midline Intravenous Catheters in Critically Ill Emergency Department Patients Spiegel, Rory J. et al. Annals of Emergency Medicine, Volume 0, Issue 0 https://www.annemergmed.com/article/S0196-0644(19)31236-3/fulltext