Table 1 Patient characteristics of the study population
All patients n = 549 | No cause-specific treatment n = 464 | Cause-specific treatment n = 85 | |
|---|---|---|---|
Number of males | 414 (75%) | 346 (74%) | 68 (80%) |
Age, years | 66 (56–74) | 67 (58–75) | 62 (52–70) |
Witness status | |||
Witnessed | 350 (63%) | 311 (67%) | 39 (46%) |
Non-witnessed | 114 (20%) | 101 (21%) | 13 (15%) |
Witnessed by the EMS unit | 85 (15%) | 52 (11%) | 33 (39%) |
Response | |||
Bystander CPR | 296 (53%) | 264 (56%) | 32 (37%) |
EMS delay (minutes) | 7 (4–10) | 7 (5–10) | 6 (0–9) |
HEMS delay (minutes) | 20 (15–25) | 20 (15–25) | 19 (13–26) |
Cause of cardiac arrest | |||
Medical | 509 (92%) | 427 (92%) | 82 (96%) |
Overdose | 13 (2%) | 13 (3%) | 0 0 |
Drowning | 8 (1%) | 6 (1%) | 2 (2%) |
Asphyxia | 19 (3%) | 18 (3%) | 1 (1%) |
Initial rhythm | |||
PEA | 238 (43%) | 201 (43%) | 37 (43%) |
Asystole | 138 (25%) | 127 (27%) | 11 (12%) |
VF | 168 (30%) | 133 (28%) | 35 (41%) |
VT | 4 (1%) | 2 (1%) | 2 (2%) |