In the present work of investigation due to the worldwide conjuncture is being based on a system of monitoring and prevention for people vulnerable to cardiac arrests and covid -19 by means of the implementation of Arduino plates linked with an oximeter to measure the oxygenation in the blood that will help to monitor and to prevent cases of mortality in Peru. For the development of the project, we used the Scrum methodology and helped to develop an orderly manner and with daily communication and the advantages that this methodology provides are that it is incremental and iterative so that we can update, add or remove certain sprints that may not be useful. On the other hand, for the development of the prototype, we used builme, a tool for design with a code generator that is exclusively from SCP, where the interfaces are included as real-time information to monitor patients either from anywhere in the world to prevent early death.