Intraosseous Access - Adult and Pediatric

Key Points

• Intraosseous access provides rapid vascular access when peripheral or central intravenous access is unavailable or too slow in a critically ill patient.
• Identify the landmark, prepare the skin, insert the device perpendicular to the target cortex according to site and manufacturer technique, and confirm stability plus easy saline flush without soft-tissue swelling.
• Confirm the indication, alternatives, patient-specific risk, and rescue plan before starting whenever the clinical situation allows.
• Identify anatomy carefully and do not force a needle, guidewire, catheter, or tube through unexpected resistance.
• Use aseptic technique and the lowest-risk device or route that will reliably accomplish the clinical goal.
• Stop and reassess immediately for soft-tissue swelling during infusion.
• Other high-risk findings include compartment syndrome, extravasation of vasopressor or hypertonic fluid.
• Confirm position and function by the appropriate waveform, ultrasound, imaging, fluid return, or clinical endpoint before relying on the device.

Algorithm

1. Verify the indication for Intraosseous Access - Adult and Pediatric and identify contraindications, altered anatomy, anticoagulation, infection risk, or physiologic instability.
2. Explain the procedure and obtain consent when feasible; perform a time-out and assemble monitoring, analgesia/sedation, and rescue equipment appropriate to the situation.
3. Identify the safest route and anatomy with examination and ultrasound or other guidance when appropriate.
4. Prepare the field using the required aseptic or sterile technique and perform controlled insertion without forcing resistance.
5. Confirm device position and function with the correct objective method before relying on it.
6. Escalate promptly for soft-tissue swelling during infusion, compartment syndrome, extravasation of vasopressor or hypertonic fluid.
7. Document indication, technique, attempts, findings, complications, aftercare, and follow-up.

Clinical Synopsis & Reasoning

Intraosseous access provides rapid vascular access when peripheral or central intravenous access is unavailable or too slow in a critically ill patient. It is appropriate in adult and pediatric resuscitation for fluids, blood products, and most emergency medications.

Avoid placement through fractured bone, infected skin, a limb with major vascular injury, or a recently used IO site in the same bone; prior orthopedic hardware may also change site choice. Common sites include proximal tibia, proximal humerus, and distal tibia depending on age and device.

Preprocedure assessment should identify the anatomy, physiologic reserve, and the complication that would be most dangerous to miss. Relevant checks for this procedure include Flush test, Site examination, Pressure/flow assessment. A finding such as soft-tissue swelling during infusion, compartment syndrome, extravasation of vasopressor or hypertonic fluid should change the operator, location, technique, or urgency rather than being treated as a routine variation. The safest plan also specifies what will confirm success and what rescue step will be used if the expected endpoint is not reached.

Treatment Strategy & Disposition

Identify the landmark, prepare the skin, insert the device perpendicular to the target cortex according to site and manufacturer technique, and confirm stability plus easy saline flush without soft-tissue swelling. Aspiration of marrow can support position but is not required if the line flushes easily and functions well. In an awake patient, IO infusion is painful and local anesthetic through the line can be used according to protocol before pressurized infusion.

Use a pressure bag or pump because marrow resistance limits gravity flow. Secure the device, monitor the limb for infiltration or compartment syndrome, and replace IO access with conventional vascular access as soon as practical.

After Intraosseous Access - Adult and Pediatric, confirm that the device is functioning for its intended purpose and that no immediate mechanical complication has been created. Escalate promptly for soft-tissue swelling during infusion, compartment syndrome, extravasation of vasopressor or hypertonic fluid. Document the indication, site or route, device details when relevant, number of attempts, complications, and confirmation method. A device that no longer has a valid indication should be removed rather than retained for convenience.

Epidemiology / Risk Factors

• Intraosseous access is an emergency bridge when IV access is unavailable or would cause harmful delay.
• Most resuscitation medications and blood products can be given through a functioning IO line.
• The device should be replaced with conventional vascular access when practical because IO access is temporary.

Investigations

Common Intraosseous Sites

Pharmacology

Prognosis / Complications

• Most uncomplicated Intraosseous Access - Adult and Pediatric procedures have favorable outcomes when the indication is appropriate, technique is careful, and success is confirmed.
• Procedure-related harm is reduced by preparation, anatomy review, infection prevention, objective confirmation, and early recognition of complications.
• Unexpected soft-tissue swelling during infusion should be treated as a complication or failed procedure until proven otherwise.
• Long-term outcome is determined mainly by the disease or injury that required the procedure and by the quality of follow-up after the immediate intervention.

Patient Education / Counseling

• Explain why Intraosseous Access - Adult and Pediatric is being performed, the expected benefit, and the most important alternatives when time permits.
• Review the immediate sensations, monitoring, and aftercare the patient should expect.
• Seek urgent reassessment for soft-tissue swelling during infusion, compartment syndrome, extravasation of vasopressor or hypertonic fluid.
• Give specific wound, device, activity, bathing, medication, or dressing instructions that match the procedure rather than generic discharge language.
• Clarify who will review pending laboratory or pathology results when specimens were obtained.
• Document and communicate any difficult anatomy or complication that could affect future procedures.

Notes

The major safety principle in Intraosseous Access - Adult and Pediatric is controlled progression with objective confirmation. Procedural momentum can become dangerous when an operator keeps advancing despite resistance, worsening physiology, uncertain anatomy, or an endpoint that has not been verified. Stop and reassess for soft-tissue swelling during infusion, compartment syndrome, extravasation of vasopressor or hypertonic fluid.

The procedure should end with a second diagnostic question: did it solve the problem without creating a new one? Repeat the relevant examination, confirm position or function when required, document complications and attempts, and make the aftercare plan explicit. This final verification is especially important when the patient will leave the procedure area or be handed off to another team.

References

1. American Heart Association CPR and Emergency Cardiovascular Care — Link