A system and method to assist an emergency medical dispatcher in responding to emergency calls. A computer implemented emergency dispatch protocol includes interrogatories for a dispatcher to ask a caller to generate an appropriate response. A diagnostic tool is provided to diagnosis as to whether a patient has likely suffered a stroke. The diagnostic tool determines whether the patient has likely suffered a stroke based on caller-relayed information about the patient. The diagnostic tool can be launched automatically by the emergency dispatch protocol, or manually by a dispatcher. The diagnostic tool presents a user interface that provides, among other things, instructions, questions, and input fields.
