Table 2.
Timeframe durations between crucial Pol-AED resuscitation cornerstones. Categorical data are presented as counts and percentages, continuous data as medians and interquartile ranges (IQR). Kruskal–Wallis tests and chi-square tests were used to assess differences between subgroups. LP (Lifepak) CR Plus: Physio-Control, Redmond, WA, USA; HeartStart FRx: Philips, Amsterdam, The Netherlands; HeartStart HS1: Philips, Amsterdam, The Netherlands; LP 1000: Physio-Control, Redmond, WA, USA; min = minutes; sec = seconds; EMS = emergency medical service; Pol = police; AED = automated external defibrillator.
| Table 2 | Overall (n = 350) |
LP CR Plus (n = 197) |
Philips HS1 (n = 40) |
Philips FrX (n = 108) |
LP 1000 (n = 5) |
p-Value |
|---|---|---|---|---|---|---|
|
Call → EMS on scene, min (IQR) |
6.5 (5.0–8.8) | 6.7 (5.2–8.8) | 6.0 (4.9–8.7) | 6.2 (5.0–8.4) | 10.2 (8.6–11.4) | 0.991 |
|
EMS on scene → ALS start, min (IQR) |
1.7 (1.0–2.6) | 1.7 (1.0–2.6) | 1.6 (0.8–2.6) | 1.8 (1.0–2.6) | 1.1 (0.7–1.8) | 0.974 |
| Call → Pol-AED turned on, min (IQR) | 4.4 (2.5–6.5) | 4.4 (2.6–6.4) | 4.7 (2.6–6.8) | 4.7 (2.4–6.2) | 8.0 (1.0–9.5) | 0.995 |
|
Call → 1st Pol-AED shock, min (IQR) |
5.6 (3.5–7.8) | 5.7 (4.0–7.8) | 5.6 (3.9–8.4) | 5.5 (3.0–7.5) | 9.1 (1.7–10.5) | 0.201 |
|
Pol-AED turned on → electrodes placed on patient, seconds (IQR) |
37 (22–51) | 43 (31–56) | 35 (29–58) | 21 (3–37) | 12 (4–39) | 0.003 |
|
Pol-AED turned on → rhythm analysis start, seconds (IQR) |
41 (26–59) | 50 (37–66) | 39 (29–80) | 22 (3–38) | 39 (10–60) | 0.022 |
|
Pol-AED turned on → 1st shock, seconds, (IQR) |
61 (46–79) | 69 (55–85) | 59 (50–97) | 45 (28–61) | 59 (28–81) | <0.001 |
|
Pol-AED turned on → chest compression start after 1st AED shock, seconds (IQR) |
69 (53–89) | 74 (61–94) | 70 (61–114) | 55 (36–71) | 63 (33–88) | 0.999 |
| Electrodes placed on patient → analysis start, seconds (IQR) | 3 (0–4) | 3 (3–4) | 0 (0–1) | 0 (0–1) | 3 (2–10) | <0.001 |
|
Rhythm analysis time, seconds (IQR) |
8 (5–12) | 5 (5–6) | 12 (12–16) | 12 (11–18) | 6 (5–8) | <0.001 |
|
Shock loading time, seconds (IQR) |
6 (0–6) | 6 (6–6) | 0 (0–1) | 0 (0–1) | 6 (5–7) | <0.001 |
|
1st POL-AED shock → chest compression start, seconds (IQR) |
5 (3–8) | 4 (3–6) | 7 (3–14) | 6 (3–11) | 6 (2–7) | 0.973 |