An observer tool to enhance learning of incoming anesthesia residents' skills during simulation training of central venous catheter insertion: a randomized controlled trial.

Background: Central venous catheter (CVC) insertion using simulation is an essential skill for anesthesiologists. Simulation training is an effective mean to master this skill. Given the large number of residents and the limited duration of training sessions, the active practice time is limited and residents remain observers of their colleagues for much of the session.