Context aware systems have evolved into complex information systems capable of providing large quantities of information obtained from network sensors with heterogeneous characteristics. This article proposes a multi-agent system that monitors patients and maintains a permanent fix on their location within a given context. The system uses information provided by sensors distributed throughout the environment. The system agents take the information they receive and fuse it to improve the decisions and actions involved in their processing. The multi-agent system implements a SOA-based platform, which allows heterogeneous Wireless Sensor Networks to communicate in a distributed way. This article presents the evaluation of the solutions provided by the agents through the information flow for the organization.