1. A computer implemented method performed on a stand-alone dispatch center computer to assist a dispatcher in responding to a caller regarding a medical emergency of a patient, comprising: providing on the dispatch center computer an emergency medical dispatch protocol to assist emergency dispatchers, the protocol including a plurality of interrogatories for a dispatcher to ask a caller over a telephone communication device to gather information that is input by the dispatcher into the dispatch center computer and used to generate an emergency medical dispatch response by emergency responders; initiating an intervention tool on the dispatch center computer to assist in aiding a patient; the intervention tool providing a user interface on a display of the dispatch center computer, the user interface including a start input configured to enable the dispatcher to start a timer to time a period during which the caller administers compressions to the patient's chest; the intervention tool running the timer in response to the dispatcher manipulating the start input and during the period that the caller administers a predetermined number of compressions to the patient's chest; the intervention tool providing a finished input on the user interface to enable the dispatcher to terminate the timer in response to the caller communicating over the telephone communication device a completion of the predetermined number of compressions; the intervention tool recording a final time recorded by the timer in response to the dispatcher manipulating the finished input; and the intervention tool determining and providing to the dispatcher a recommendation based on the predetermined number of compressions and in relation to the final time.