• Victor Schwindenhammer, Thomas Rimmelé, Antoine Duclos, Julie Haesebaert, Marc Lilot, and Paul Abraham.
• Pôle Anesthésie-Réanimation, Centre Hospitalier Universitaire Grenoble - Alpes, La Tronche, France; Université Claude Bernard Lyon 1, Centre Lyonnais d'Enseignement par la Simulation en Santé (CLESS), Lyon, France. Electronic address: vschwindenhammer@chu-grenoble.fr.
• Injury. 2023 Sep 1; 54 (9): 110851110851.

BackroundThe CAST Grid has been developed to evaluate the use of closed-loop communication (CLC) in the trauma bay.MethodsThe CAST Grid and two validated non-technical team performance assessment tools (the TEAM and T-NOTECHS grids) were completed by 2 independent reviewers based on trauma care simulation videos from a French Level 1 trauma center. Intra- and inter-rater agreements were evaluated for CLC parameters and non-technical performance, and correlations between these parameters were analyzed.ResultsThe study analyzed 11 videos. The intra- and inter-rater agreement for the number of CLC per minute (CLC/min) was moderate and good, respectively, based on Lin's concordance correlation coefficient [95%CI] (0.57 [-0.40;0.94] and 0.77 [0.33;0.94]). However, the agreement was poor for the percentage of CLC (0.37 [-0.58;0.89] and -0.36 [-0.71;0.14], respectively). The study found that a lower number of CLC/min was correlated with an increased duration of the simulation (r = -0.75 [-0.93; -0.25]).ConclusionThe CAST Grid showed a relatively good inter-rater agreement to quantify the number of CLC/min which was inversely correlated with the duration of care. This tool opens up the possibility of quantifying CLC and allows for new analyses of team functioning and interactions.Copyright © 2023 Elsevier Ltd. All rights reserved.

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