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Introduction: Debriefing is the fundamental step in the learning process when teaching by simulation. The Debriefing Assessment for Simulation in Healthcare (DASH) guide is a tool designed to assess and develop the debriefing skills of trainers using healthcare simulation.

Aim: To evaluate the debriefing in high-fidelity mannequin simulation in the management of cardiological emergency by the DASH tool, student version.

Methods: This was a bicentric, prospective, cross-sectional and evaluative study including five groups of students in the first year of the second cycle of medical studies completing their internship in the cardiology departments of the Habib Thameur hospital and the Internal Security Forces Hospital of Marsa during the first semester of the 2021-2022 academic year. The simulation scenario included the diagnosis and emergency management of degenerative syncopal atrioventricular block.

Results: Forty-four students completed the DASH assessment form (28 female, 16 male). According to the students, the trainers had maintained a climate conducive to learning (6.51±0.74). They had conducted the debriefing in a structured way (6.35±0.75). They had aroused engagement in the exchange leading the learner to analyze his performance (6.01±1.03). They had effectively identified the learner's strengths and areas for improvement as well as their reasons (6.39±1.04). The trainers had helped the learners to consider how to improve or maintain a good level of performance (6.57±0.77). The mean DASH score evaluating the trainers was 6.36±0.88.

Conclusion: The DASH tool allows trainers to highlight the strengths and areas for improvement in the debriefing, which is the key step in the simulation to optimize the clinical reasoning process and improve the quality of care.