The Line That Fit Where It Never Should Have

For decades, the universal Luer connector let functionally different tubing systems — intravenous, epidural / neuraxial, enteral feeding, and respiratory — physically connect to one another. Medication or feed intended for one route was delivered to another, with fatal results, because the parts simply mated.

The Joint Commission's Sentinel Event Alert #53 (2014) addressed these misconnections and the phased introduction of ISO 80369 small-bore connector standards, which make cross-route connections mechanically incompatible. It is the defining 'misconnection' case family. (Joint Commission Sentinel Event Alert #53, 2014.)

1. Multiple tubing systems are in use at the bedside, all built to the same universal Luer taper.
2. A line for one route is picked up and connected to a port meant for another.
3. Nothing physically blocks the wrong connection; it seats and looks normal.
4. Medication or feed is delivered into the wrong route.
5. The error is often recognized only after the patient deteriorates.

A recognized fatal-misconnection hazard; a specific national frequency is not quantified in the alert. (Joint Commission, 2014)

Wrong-route delivery of drugs or feed. Shown through two mismatched connectors joined, the tubing, and the IV pole — never the patient.