[Out-of-hospital cardiac arrest: University of Trieste students' skills on resuscitative maneuvers and automated external defibrillator].

Background: Out-of-hospital cardiac arrest is the third leading cause of death in industrialized countries. Although most cardiac arrests are witnessed, survival is only 2-10%, since bystanders are often unable to correctly perform cardiopulmonary resuscitation (CPR). This study aims to assess the theoretical and practical knowledge of CPR and the use of the automatic external defibrillator in university students.

Methods: The study involved a total of 1686 students from 21 different faculties of the University of Trieste, 662 students from healthcare faculties and 1024 from non-healthcare faculties. Basic life support and early defibrillation (BLS-D) courses and retrainings after 2 years are mandatory for students in their final 2-year healthcare faculties at the University of Trieste. Through the platform "EUSurvey" from March to June 2021, they were given an online questionnaire of 25 multiple choice questions to investigate the performance of BLS-D.

Results: In the overall population, 68.7% knew how to diagnose a cardiac arrest and 47.5% knew the time frame after which irreversible brain damage occurs. Practical knowledge was analyzed by evaluating the correct answers to all four questions on performing CPR (i.e. hand position during compressions, frequency of compressions, depth of compressions, and ventilation-compression ratio). Health faculties students have better theoretical and practical knowledge of CPR than their colleagues of non-healthcare faculties, with better overall knowledge on the all four practical questions (11.2% vs 4.3%; p<0.001). Final-year medical students of the University of Trieste, who attended the BLS-D course and underwent retraining after 2 years, have achieved better results than first year medical students (without BLS-D training) (38.1% vs 2.7%; p<0.001).

Conclusion: Mandatory BLS-D training and retraining leads to a better knowledge of cardiac arrest management and consequently a better patient outcome. In order to improve patient survival, heartsaver (BLS-D for laics) training should be extended as obligatory in all university courses.