An ambulance heading to a San Diego County emergency department now gives its prearrival report directly to that hospital by radio. The countywide AWARE pilot began at 8 a.m. Wednesday, replacing an earlier test of three digital platforms with a standardized voice message meant to tell hospital staff what they need to prepare before the patient reaches the door.

AWARE is an acronym and a checklist. Crews state the alert level, patient acuity and estimated arrival; identify the patient and the nature of the incident; relay abnormal findings from the assessment; describe the response to treatment; and name any emergency-department readiness needs. County guidance says the initial report should generally take no more than 30 seconds. The receiving hospital acknowledges the call and listens for the patient's acuity, type and arrival time.

The information is deliberately focused on preparation. It can prompt staff to ready specialty personnel, equipment, protective gear or security before the ambulance arrives. Follow-up questions are supposed to address immediate readiness and safety, not become a full medical consultation over the destination's radio channel.

A hospital that does not serve as a base station may receive the alert but cannot provide online medical direction or decide where the patient should be transported. That boundary keeps a readiness report from changing the clinical chain of authority.

Base-hospital contact remains part of the system for decisions that require clinical authority or regional coordination. County instructions preserve it for online medical direction, destination guidance, mass-casualty incidents, specialty-system status involving trauma, stroke or heart-attack care, protocol-required calls and situations in which a crew cannot reach the receiving hospital. The change therefore separates a concise operational warning from the longer clinical and system-management conversations that already have assigned channels.

The direct-radio approach follows a digital notification pilot involving ImageTrend, Pulsara and TigerConnect. That test ended as AWARE began. County documents say stakeholder feedback identified a benefit in reducing information loss that can occur when a report is relayed through another party. Radio also provides a common method across emergency medical service agencies and emergency departments, including federal and out-of-county participants and basic-life-support interfacility transports covered by the pilot.

Whether the change improves care cannot be inferred from a shorter route for the message alone. A communication system can be judged on missed alerts, time spent transmitting, the completeness and accuracy of reports, hospital acknowledgment, equipment readiness and any delays created on crowded channels. Patient outcomes are influenced by many steps before and after arrival, so a before-and-after comparison would need to account for case severity and destination as well as the notification method.

The radio pilot is transitional. San Diego County is procuring a future digital direct-to-hospital system, and officials expect radio to remain available as a backup after that platform is chosen. The earlier product test and the new voice protocol answer different questions: one compared digital tools, while the other tests a shared workflow that agencies can use now. Weekly stakeholder meetings scheduled for September 3, 9 and 22 give crews and hospitals an early route to identify operational problems.

For the first weeks, consistency is the immediate measure. Every crew must use the same compact order, reach the actual destination hospital and know when to shift to a base station. Every receiving department must monitor the channel and recognize what an AWARE report does and does not request. Records from those handoffs can show whether direct contact reliably preserves critical details before the county commits to the design of its longer-term digital system.