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Table 1 Episode and time characteristics vs. outcome

From: The early minutes of in-hospital cardiac arrest: Shock or CPR? A population based prospective study

  All episodes* n = 221 Dead on scene n = 132 ROSC n = 57 Survived the episode* n = 32
Episode characteristics     
Location of arrest     
ICU/CCU 27 (12%) 16 8 3 (11%, 4 to 28%)
Other (mainly wards) 160 (72%) 102 40 18 (11%, 7 to 17%)
Emergency department 34 (15%) 14 9 11 (32%, 19 to 49%)
Witnessed 163 (74%) 94 43 26 (16%, 11 to 22%)
CPR quality     
2 – Good 123 (56%) 74 35 14 (11%, 7 to 18%)
1 – Intermediate 63 (28%) 41 13 9 (14%, 8 to 25%)
0 – None 35 (16%) 17 9 9 (26%, 14 to 42%)
Presenting rhythm     
   VF/VT 90 (41%) 29 31 30 (33%, 24 to 44%)
   Asystole 66 (30%) 49 16 1 (2%, 0 to 8 %)
   PEA 65 (29%) 54 10 1 (2%, 0 to 8 %)
Time characteristics     
Collapse-to-defibrillation, VF/VT     
Median with IQR (minutes) 4.0 (1.25, 6.75) 6.0 (3.5, 8) 4.0 (2.0, 6.0) 2.0 (1.0, 4.0)
Collapse-to-BLS, VF/VT     
Median with IQR (minutes) 1.0 (0.0, 2.0) 1.0 (0.0, 2.0) 1.0 (0.0, 1.0) 1.0 (0.0, 2.0)
Collapse-to-BLS, PEA/ASY     
Median with IQR (minutes) 1.0 (0.0, 2.0) 1.0 (0.0, 2.0) 1.0 (0.0, 4.0) 0.5 (0.25, 0.75)
  1. *The number of episodes (n = 221) is higher than the number of patients (n = 217), as two patients arrested more than once (see text). ** Numbers in parenthesis are percentages with 95% confidence intervals