Table 1.
Description of system factors used in simulation model, with nominal simulation values.
| Description of System Factor | Nominal value |
|---|---|
| Time from 911 call to EMS dispatch (minutes) | 0.5 |
| Time from EMS dispatch to start of ambulance transit (minutes) | 3 |
| Ambulance velocity (km/h) | 70 |
| Ambulance availability (due to other calls, maintenance, etc.) | 76% |
| Time from EMS arrival until start of treatment (minutes) | 1 |
| Mobile responder density (responders per sq km in system) | 5 |
| Mobile responder dispatch time from 911 call (minutes) | 1 |
| Mobile responder time from alert to begin walk transit (minutes) | 0.75 |
| Mobile responder time from alert to begin driving transit (minutes) | 1 |
| Mobile responder walking velocity (km/h) | 7 |
| Mobile responder driving velocity (km/h) | 32 |
| Mobile responder reliability (likelihood of acting upon alert) | 0.3 |
| AED reliability (likelihood AED is in a fully functional state) | 0.99 |
| Time from mobile responder arrival until start of treatment (minutes) | 1 |
| Time from 911 call to drone dispatch (minutes) | 1 |
| Drone vertical flight time (minutes) | 0.5 |
| Drone velocity (km/h) | 80 |
| Drone descent and AED deployment time (minutes) | 1 |
| Drone operational availability (due to other calls, maintenance, etc.) | 96% |
| Drone weather availability | 90% |
| Time from drone arrival until start of treatment (minutes) | 1 |