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Table 2 BLS with the use of an AED in scenarios of persistent asystole

From: Quality of basic life support when using different commercially available public access defibrillators

  Time until 1st chest compression [seconds] Time until completion of 1st rhythm analysis [seconds] Duration of rhythm analysis [seconds] Interval between completion of 1st rhythm analysis and start of 2nd rhythm analysis [seconds] No-flow fraction
(A) Heartsave PAD 58+ ± 2 D,E,H,I,+ 50 ± 3D,H,I 20 ± 1 140 ± 1C 0.52 ± 0.03C
(B) Philips HS1§ 112 ± 2G 77 ± 3C,G 11 ± 1C,D,E,I 200 ± 1 0.71 ± 0F
(C) Philips HS1* 92 ± 2G,+ 78 ± 2B,G,+ 12 ± 0B,D,E,I 140 ± 0A 0.50 ± 0A,+
(D) Lifeline VIEW 64 ± 1A,E,H,I,+ 53 ± 2A,H 12 ± 1B,C,F,I 154 ± 1 0.58 ± 0.01+
(E) Lifepak CR Plus 67 ± 1 A,D,H,I,+ 61 ± 1+ 10 ± 1B,C,H,I 125 ± 0G,H,I 0.42 ± 0.01G,H,I
(F) PowerHeart G5 148 ± 13+ 96 ± 2+ 15 ± 1D,G 183 ± 1 0.72 ± 0B,+
(G) Fred Easy Life 97 ± 1 B,C,+ 74 ± 1B,C,+ 15 ± 0F 123 ± 1E 0.45 ± 0E,H,+
(H) AED Plus 57 ± 1A,D,E,I,+ 53 ± 2A,D,+ 8 ± 0E,I 126 ± 1E,I 0.41 ± 0.01E,G,I,+
(I) Cardiolife AED 2100 52 ± 1A,D,E,H,+ 45 ± 1A,+ 10 ± 0B,C,D,E,H 127 ± 0E,H 0.40 ± 0.01E,H
(K) BLS without AED 25 ± 2     0.26 ± 0.01
  1. The duration of the scenario was 300 seconds. Values are the mean ± standard deviation. The Philips HS1 asks the rescuer to press an “info button” for detailed information about chest compressions and ventilations after each rhythm analysis. The scenario was run 3 times when pressing the info button§ and 3 times without pressing the button*. A lack of statistical significance (p > 0.01) in comparison with a specific model is indicated by the identifying letter (A) – (I). +p < 0.01 against the respective parameter in the scenarios with an optimized sequence of actions.