Comparison of external jugular vein-based surface landmark approach and ultrasound-guided approach for internal jugular venous cannulation: A randomised crossover clinical trial.

In patients with non-distorted neck anatomy and a visible EJV, IJV catheterisation using the EJV-based LM approach and standard US-guided technique yielded similar first-attempt and overall success rates. Cannulation time was longer and complications occurred more frequently in the EJV-based LM compared with the standard US-guided technique.