The Mobile Emergency Triage (MET) system provides doctors with decision support for emergency care by pulling information from a patient's health record  and a medical literature database. Encryption and access control are necessary for ensuring proper authorization and confidentiality for patient  records. A new encryption technology called policy-based encryption proves to be quite useful within a health care environment for providing both encryption and access control. We propose an extension to an existing scheme which allows for the use of this cryptography in a hospital setting. We also  describe how we integrate encryption and access control with the MET multi-agent system.