• Stefanie Beck, Christoph Doehn, Hayo Funk, Janina Kosan, Malte Issleib, Anne Daubmann, Christian Zöllner, and Jens Christian Kubitz.
• Department of Anaesthesiology, University Medical Center Hamburg-Eppendorf, Martini-Str. 52, 20246 Hamburg, Germany.
• Resuscitation. 2019 Nov 1; 144: 33-39.

IntroductionSurvival of in-hospital cardiac arrest (IHCA) depends on fast and effective action of the first responding team. Not only technical skills, but professional teamwork is required. Observational studies and theoretical models suggest that shared mental models of members improve teamwork. This study investigated if a training on shared mental models, improves team performance in simulated in-hospital cardiac arrest.MethodsOn the background of an introduction of mandatory Basic Life Support (BLS) training for clinical staff a randomized controlled trial was performed to compare two training methods. Staff from clinical departments was randomised to receive either a conventional instructor led training (control group) or an interventional training (intervention group). The interventional training was based on self-directed learning of the group in order to develop shared mental models. Primary outcome were mean scores of the team assessment scale (TAS) and the hands-off time. Secondary outcome were mean scores for quality of BLS.ResultsPerformance of 75 teams of the interventional and 66 of the control group was analysed. The hands-off time was significantly lower in the interventional group (5.42% vs. 8.85%, p = 0.029). Scores of the TAS and the overall BLS score were high and not significantly different between the groups. Hands-off time correlated significantly negative with all TAS items.ConclusionBLS training for clinical staff which creates shared mental models reduces hands-off time in a simulated cardiac arrest scenario. Training methods establishing shared mental models of team members can be considered for effective team trainings without adding additional training time.Copyright © 2019 Elsevier B.V. All rights reserved.

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