UMEM Educational Pearls

Intraosseous (IO) administration uses bone marrow to deliver fluids and medications during cardiac resuscitation or other emergent situations where IV access cannot be established.

IV versus IO

  • No statistically significant difference between the pharmacokinetics!
  • Flow rates of IV cannula typically range from 20 to 200 mL/min versus IO ranging from 0.33 to >50 mL/min under pressure
    • Maximum rate of administration through IO is comparable to a 21G peripheral cannula.

Considerations When Using IO Access

  • Single line, ensure all drugs running through the IO are compatible with one another.
    • For example: plasmalyte is not compatible with most medications
  • If trying to quickly administer fluids utilize a pressure bag.
    • If medication administration (i.e. vasopressors) pump should be used
  • Contraindications to IO include:
    • Placement in fractured bone with vascular injury
    • Compartment syndrome
    • Cellulitis/burns at the site
    • Underlying bone disease
    • Soft tissue infection
    • Recent orthopedic surgery
  • Once a bone has been punctured by an IO attempt, it should not be used again for at least 48 hours. 
  • Intraosseous aspiration of blood is usable for lab tests, though accuracy has varied in studies. 

 

Additional Information

References

References

Dornhofer P, Kellar JZ. Intraosseous Vascular Access. [Updated 2022 Jun 11]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK554373/

Von Hoff DD, Kuhn JG, Burris HA 3rd, Miller LJ. Does intraosseous equal intravenous? A pharmacokinetic study. Am J Emerg Med. 2008;26(1):31-38. doi:10.1016/j.ajem.2007.03.024

Langley DM, Moran M. Intraosseous needles: they're not just for kids anymore. J Emerg Nurs. 2008;34(4):318-319. doi:10.1016/j.jen.2007.07.005

Ngo AS, Oh JJ, Chen Y, Yong D, Ong ME. Intraosseous vascular access in adults using the EZ-IO in an emergency department. Int J Emerg Med. 2009;2(3):155-160. Published 2009 Aug 11. doi:10.1007/s12245-009-0116-9