“…The immediate action in an out-of-hospital cardiac arrest (OHCA) is essential to increase survival rates, which includes an immediate and effective application of basic life support (BLS) measures and the use of Automatic External Defibrillators (AEDs) by the trained laypersons, who are generally relatives, friends, teachers or passers-by. 1 With this objective in mind, according to International Liaison Committee on Resuscitation (ILCOR), the European Resuscitation Council (ERC), among others, the recommends the teaching, training and retraining of laypeople, although both the duration and the characteristics of the training programs have yet to be ascertained 2 and in addition, proposes the online teaching of theoretical knowledge, while prioritizing hands-on training in the face-to-face part. 3 , 4 , 5 However, previous studies have shown the different existing educational programs on BLS, and they differ in terms of the applied methodology, duration and contextualization.…”