RESUMO
Hospital Italiano de Buenos Aires (HIBA) is an academic tertiary care hospital highly specialized that has started the process of informatization of chemotherapy protocols. The objective is to describe the development of a computerized physician order entry (CPOE) oriented to the oncology adult patient and the members of the healthcare team that works with him (physicians, pharmacists, nurses and administrative staf) to improve the process and prevent errors at a critical point in the patient's health care: during prescription, preparation and / or administration. The development of this system consisted of several stages: inquiries about the usual work and perception of needs of the potential users; user-centered design; interoperability with the electronic health record (EHR) and development of a final prototype.