Drones could significantly reduce the time it takes to deliver automated external defibrillators (AEDs) to people experiencing cardiac arrests outside of hospital settings, a study suggests. The analysis focused on 28,349 out-of-hospital cardiac arrest cases in the Greater Paris area over a 13-year period and explored how drone deployment might improve AED coverage.
Currently, just 30% of cardiac arrests occur within 500 meters of a fixed AED. To increase this coverage to 84.5%, an additional 910 devices would be needed, and 1,712 more would be required for complete 100% coverage. However, the study found that combining fixed AEDs with drone bases operating within a 3.9-kilometer radius could provide broader coverage with fewer devices. For example, 100 drone bases paired with 26 extra AEDs could cover over 97% of cases within the targeted proximity.
Drones Could Enhance Rapid AED Access
The study also examined the accessibility of AEDs within a five-minute round trip using the existing ground transportation network. Findings showed that only 30-40% of cardiac arrest cases could access fixed AEDs within that timeframe. Moreover, many AEDs are housed in private or enclosed spaces that are not always accessible, further limiting their use during emergencies.
By contrast, a drone-enabled system with 200 drone bases, 871 existing AED locations, and four additional fixed AEDs could deliver devices to nearly all cases within five minutes. Drones in this model would be stationed at sites such as fire stations and mobile intensive care units and operated by trained pilots under emergency medical service supervision.
Operational Considerations and Real-World Applications
This approach is not purely theoretical; drone delivery of AEDs has already been implemented in parts of Sweden, where it has contributed to saving lives. In practice, emergency dispatchers would activate a drone immediately upon recognizing an out-of-hospital cardiac arrest during a call. While the drone would autonomously follow a flight path, the final approach and AED drop-off would be managed by a drone pilot working in coordination with emergency services.
Despite the potential benefits, cost considerations remain a critical factor in deploying such technology on a wide scale. Researchers note that balancing the ideal coverage model with economic feasibility will be key in future planning.
Next Steps and Presentation
The findings, which have yet to undergo peer review, will be presented at the European Emergency Medicine Congress in Paris. The study adds to growing evidence that integrating drone technology into emergency medical services could improve outcomes for cardiac arrest patients by speeding delivery of life-saving equipment.
