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Table 2 Time variables during simulated AED-drone interaction

From: Drone delivery of an automated external defibrillator – a mixed method simulation study of bystander experience

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
  1. * A p-level of <0.05 was regarded as significant