Table 2.
Time variables during simulated AED-drone interaction
| Time variables | Single bystander median time (min:sec) | Dual bystanders median time (min:sec) | p |
|---|---|---|---|
| Bystander/s are introduced to a simulated OHCA – manikin | |||
| 1.Picks up the phone and start calling emergency operator, | 0:13 (0:10–0:30) | 0:05 (0:03–0:06) | 0.02* |
| 2. Picks up the phone and start calling emergency operator – until the emergency operator answer | 0:32 (0:10–1:46) | 0:18 (0:18–2:22) | 0.88 |
| 3. Time for the emergency operator to recognise suspected cardiac arrest | 1:04 (0:55–1:14) | 1:31 (0:58–1:39) | 0.56 |
| 4. Start CPR | 2:21 (0:15–3:20) | 2:25 (1:53–3:49) | 0.47 |
| Bystander is informed of AED-drone arrival at 5 min after dispatcher recognizes OHCA: | |||
| 5. Time for bystanders to retrieve AED 50 m away | 1:34 (1:15–1:50) | 2:06 (1:30–2:47) | 0.24 |
| 6. Time for bystanders to attach AED to the patient | 1:25 (0:40–1:28) | 1:26 (0:47–1:21) | 1.0 |
| 7. CPR hands-off time | 1:34 (1:15–1:50) | 0 | 0.01* |
| Total time delays: | |||
| 8. Emergency operator first answer the emergency call – until AED is attached to the patient | 7:59 (6:55–8:18) | 8:23 (7:28–8:34) | 0.39 |
| 9. Total time from collapse until AED attached to the patient | 9:47 (8:52–10:31) | 10:27 (8:50–11:40) | 0.56 |
* A p-level of <0.05 was regarded as significant