Optimizing Residents' Performance of Lumbar Puncture: An RCT Comparing the Effect of Preparatory Interventions on Performance and Self-Confidence.

Background: Lumbar puncture is often associated with uncertainty and limited experience on the part of residents; therefore, preparatory interventions can be essential. There is growing interest in the potential benefit of videos over written text. However, little attention has been given to whether the design of the videos impacts on subsequent performance.