The proposal to implement the use of External Automated Defibrillators in public spaces arose more than 30 years ago as a means to reduce the mortality of out-of-hospital cardiac arrest events. Worldwide, deployment programs of these devices have demonstrated efficacy and effectiveness, reflected in concrete and tangible results. As a response to the global scenario, in Colombia 5 years ago legislation was passed to rule over the implementation of these devices in spaces of high confluence. The aim of this article is to expose the issues with implementation of EADs in the Bus Rapid Transport System of Bogota, TransMilenio, from a critical and analytical perspective; showing the existing flaws in the primary attention of cardiac arrest.