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Table 1 Potential of an UAV system for delivery of an AED in OHCA

From: Unmanned aerial vehicles (drones) in out-of-hospital-cardiac-arrest

Urban, 50/50 weighting UAV, simulated maximum delay (min) EMS, delay (min)b UAV before EMS (min)b UAV before EMS (%)
Location #:
 1 (471,1122)a 8,5 8,5 (0–93) 0 30 %
 2 (368,864) 8,5 - - 30 %
 3 (250,710) 8,5 8 (0–93) - 0,5 26 %
 4 (323, 621) 8,5 9 (1–77) 0,5 34 %
 5 (359,589) 8,5 9 (0–93) 0,5 39 %
 6 (293,366) 8,5 10 (0–86) 1,5 44 %
 7 (5,0) 8,5 31 (14–44) 22,5 100 %
 8 (12,0) 8,5 24 (13–46) 15,5 100 %
 9 (3,0) 8,5 32 (18–43) 23,5 100 %
 10 (454,1095) 8,5 8 (0–76) - 0,5 29 %
Total, (2538,5367)     32 %
Rural, 80/20 weighting UAV, simulated maximum delay (min) EMS, delay (min) b UAV timesaving (min) UAV before EMS (%)
Location #:
 1 (5,0) 8,5 31 (14–44) 22,5 100 %
 2 (3,0) 8,5 - - -
 3 (12,0) 8,5 29 (13–46) 20,5 100 %
 4 (21,0) 8,5 29 (19–43) 20,5 100 %
 5 (14,1) 8,5 30 (11–81) 21,5 93 %
 6 (23,1) 8,5 21 (11–62) 12,5 96 %
 7 (4,1) 8,5 23 (9–40) 14,5 80 %
 8 (3,0) 8,5 38 (6–82) 29,5 100 %
 9 (15,1) 8,5 23 (5–41) 14,5 94 %
 10 (24,6) 8,5 20 (3–54) 11,5 80 %
Total, (124,10)     93 %
  1. aNumbers within parenthesis: (OHCA with UAV arrival before EMS vs OHCA with EMS arrival before UAV). Calculations based on suitable placements using a 50/50 vs an 80/20 weighting scenario, 8.5 min flight-time, UAV in 70 km/h velocity. Several cases are found within one or more UAV-locations, radius of each location 10 km
  2. b Mean delay (minutes) from call to arrival of EMS