How to agree on what is fundamental to optimal teamwork performance in a situation of postpartum hemorrhage? A multidisciplinary Delphi French study to develop the Obstetric Team Performance Assessment Scale (OTPA Scale).

The objective of this study was to develop a new interdisciplinary teamwork scale, the Obstetric Team Performance Assessment (OTPA), for the management of the post-partum hemorrhage, through consensus agreement of obstetric caregivers. The goal is to provide a reliable tool for teaching and evaluating teams in high-fidelity simulation. This prospective study is based on an expert consensus, using a Delphi method. The authors developed the "OTPA» specifically related to the management of post-partum hemorrhage, using existing recommendations. For the Delphi survey, the scale was distributed to a selected group of experts. After each round of Delphi, authors quantitatively analyzed each element of the scale, based on the percentages of agreement received, and reviewed each comment. This blind examination then led to the modification of the scale. The rounds were continued until 80-100 % agreement with a median overall response score equal to or greater than 8 was obtained for at least 60 % of items. Repeated 3 times, the process led to consensus and to a final version of the OTPA scale. From February to October 2018, 16 of the 33 invited experts participated in four Delphi cycles. Of the 37 items selected in the first round, only 19 (51.3 %) had an agreement of 80-100% with a median overall response score equal to or greater than 8 in the second round, and a third round was conducted. During this third round, 24 of the 37 items were validated (64.9 %) and 82 of the 88 sub-items obtained 80 %-100 % agreement (93.2 %). The fourth round consisted of proposing a weighting of the different items. Using a structured Delphi method, we provided a new interdisciplinary teamwork scale (OTPA), for the management of the post-partum hemorrhage. Thus, this scale will be able to be used during high-fidelity scenarii to assess performances of various teams facing a scenari of PPH. Moreover, this scale, focusing some crucial aspects of interdisciplinary teamwork will be useful for teaching purpose.

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Declaration of Competing Interest The authors do not declare any conflict of interest.