intraosseous access
Emergency vascular access technique through bone marrow, particularly valuable in pediatric resuscitation when IV access fails.
Full Definition
A method of obtaining vascular access by inserting a needle or catheter directly into the bone marrow cavity, typically in the proximal tibia, distal femur, or humeral head. In pediatric anesthesia and emergency medicine, intraosseous access provides a reliable route for fluid and medication administration when peripheral intravenous access is difficult or impossible. The technique is especially valuable in critically ill children, those with difficult venous access, or during cardiac arrest situations. Medications and fluids administered via this route reach the central circulation almost as rapidly as intravenous administration.
Usage
Usage note: Specify the anatomical site used for IO access in documentation.
In Context
- "When peripheral IV attempts failed, intraosseous access was established in the proximal tibia for emergency medications." — Emergency procedure documentation
- "The anesthesiologist obtained intraosseous access as backup vascular access in the high-risk pediatric patient." — Anesthesia safety planning