  The growing complexity and sophistication of the organizational information
systems, and hospital ones particularly, render difficult their comprehension
and, consequently, the implementation of control mechanisms that may assure, at
all times, the auditability of the above mentioned systems, without having to
use models. This paper, framed in a wider investigation, aims to describe the
application of techniques and methodologies, in the sphere of action of
Organizational Engineering, in the modelling of business processes developed in
the main Operating Theatre of the Coimbra's University Hospital Emergency
Service, as a support for the implementation of an information system
architecture, using for that purpose the CEO framework, developed and suggested
by the Centre for Organizational Engineering (CEO), based on the UML language.
