A resting ECG is the most widely prescribed diagnostic cardiac test.  Electrocardiographs, unlike other cardiology modality devices, have traditionally used proprietary communication protocols making device interoperability and clinical workflow very difficult. The Resting ECG Workflow (REWF) integration profile specifies actors and transactions that allow users to register a patient, order the test, perform the test (acquiring the waveforms), and interpret the test results (reporting) in an interoperable way. The Resting ECG Workflow profile will also handle unordered tests, urgent cases, and ECGs acquired in both hospital and office settings.