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Table 4 BLS with the use of an AED in scenarios with persistent asystole: optimized sequence of actions

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 40 ± 2C,E,+ 39 ± 3 19 ± 2 140 ± 1B 0.41 ± 0.01
(B) Philips HS1 26 ± 1D,G,H,K,+ 24 ± 1D,G,H,+ 10 ± 1C,D,G,H 142 ± 1A 0.33 ± 0.02C,D,E,F,G,H,+
(C) Lifeline VIEW 33 ± 2A,D,E,G,H,+ 32 ± 2D,E,+ 12 ± 1B,D,E,F 153 ± 0 0.36 ± 0.02B,D,E,F,G,H,+
(D) Lifepak CR Plus 28 ± 2B,C,E,G,H,K,+ 26 ± 1B,C,E,G,H,+ 10 ± 1B,C,G,H 125 ± 0G 0.33 ± 0.01B,C,E,F,G,H
(E) PowerHeart G5 34 ± 0A,C,D,G,+ 32 ± 1C,D,+ 14 ± 1C,F 184 ± 1 0.34 ± 0.01B,C,D,F,G,H,+
(F) Fred Easy Life 16 ± 2+ 48 ± 1+ 15 ± 1C,E 122 ± 1G 0.33 ± 0.01B,C,D,E,G,H,+
(G) AED Plus 27 ± 2B,C,D,E,H,K,+ 26 ± 1B,D,H,+ 9 ± 0B,D,H 125 ± 1D,F 0.35 ± 0B,C,D,E,F,H,+
(H) Cardiolife AED 2100 27 ± 3B,C,D,G,K,+ 25 ± 3B,D,G,+ 9 ± 0B,D,G 128 ± 1 0.35 ± 0B,C,D,E,F,G
(K) BLS without AED 25 ± 2B,D,G,H     0.26 ± 0.01
  1. The duration of the scenario was 300 seconds. Values are the mean ± standard deviation. 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 a standard sequence of actions.