In the critical seconds of a resuscitation, establishing vascular access is paramount. When peripheral veins collapse, obtaining reliable IO access becomes a critical lifeline. However, the speed of IO insertion can be compromised by preventable IO complications. However, the speed and efficacy of IO placement can be overshadowed by preventable complications, turning a rescue maneuver into a source of new clinical problems. Understanding these pitfalls isn't just academic; it directly impacts patient safety, procedural efficiency, and clinical outcomes.

In emergency medicine and pre-hospital care, establishing effective access for fluid resuscitation and drug delivery is the first critical step in saving a life. Traditionally, peripheral intravenous access (IV access) has been regarded as the standard initial approach. However, clinical reality shows that in critically ill patients—especially those in shock, severe trauma, or cardiac arrest—the first attempt at intravenous infusion (IV infusion) often fails or takes too long. This is not an occasional issue, but a high-probability clinical event.

In critical emergency care—such as the management of shock, cardiac arrest, or severe trauma—time is measured in seconds. In these moments, establishing a reliable vascular route is the foundation for medication administration and resuscitation. However, traditional intravenous access faces severe challenges under such conditions. Peripheral blood vessels often constrict or collapse due to circulatory failure, dramatically reducing puncture success rates and significantly prolonging the time required to establish access.