Table 1 Characteristics of all patients and comparison between AAM and no AAM groups
Variables | All patients (n = 1533) | AAM (n = 476) | No AAM (n = 1057) | P |
|---|---|---|---|---|
Age (years, Mean ± SD) | 64.26 ± 17.65 | 64.23 ± 17.00 | 64.28 ± 17.95 | 0.958 |
Gender (n, %) | ||||
Male | 1030 (67.2) | 318 (66.8) | 712 (67.4) | 0.831 |
Female | 503 (32.8) | 158 (33.2) | 345 (32.6) | |
Origin of cardiac arrest | ||||
Cardiac origin | 1006 (65.6) | 334 (68.9) | 672 (64.1) | < 0.001 |
Non cardiac | 324 (21.1) | 104 (21.8) | 220 (20.8) | |
Trauma | 110 (7.2) | 15 (3.2) | 95 (9.0) | |
Other exogenous origin | 93 (6.1) | 23 (4.8) | 70 (6.6) | |
Initial ECG (n, %) | ||||
F/VT | 90 (5.9) | 31 (6.5) | 59 (5.6) | 0.751 |
Asystole | 1329 (86.7) | 411 (86.3) | 918 (86.8) | |
PEA | 114 (7.3) | 34 (7.2) | 80 (7.6) | |
Bystander CPR (n, %) | ||||
Yes | 9 (0.6) | 3 (0.6) | 6 (0.6) | 1.000 |
No | 1524 (99.4) | 473 (99.4) | 1051 (99.4) | |
Season of event (n, %) | ||||
Spring | 329 (21.5) | 97 (20.4) | 232 (21.9) | 0.108 |
Summer | 364 (23.7) | 110 (23.1) | 254 (24.0) | |
Autumn | 405 (26.4) | 145 (30.5) | 260 (24.6) | |
Winter | 435 (28.4) | 124 (26.1) | 311 (29.4) | |
EMS response time (minute, Mean ± SD) | ||||
Response time to call for help | 1.72 ± 1.54 | 1.68 ± 1.41 | 1.74 ± 1.59 | 0.429 |
Emergency response time | 11.11 ± 5.51 | 10.77 ± 5.46 | 11.26 ± 5.53 | 0.109 |
EMS Scene rescue time | 14.74 ± 11.60 | 19.09 ± 13.48 | 12.77 ± 10.06 | < 0.001 |
Emergency transport rescue time | 10.05 ± 8.76 | 10.84 ± 10.56 | 9.68 ± 7.80 | 0.032 |
Total rescue time | 24.78 ± 14.50 | 29.93 ± 16.74 | 22.46 ± 12.71 | < 0.001 |
Prehospital time | 35.89 ± 15.77 | 40.71 ± 18.09 | 33.72 ± 14.08 | < 0.001 |
Electrical defibrillation (n, %) | ||||
Yes | 36 (2.3) | 16 (3.4) | 20 (1.9) | 0.079 |
No | 1497 (97.7) | 460 (96.6) | 1037 (98.1) | |
Adrenaline (n, %) | ||||
Yes | 572 (37.3) | 281 (59.0) | 291 (27.5) | < 0.001 |
No | 961 (62.7) | 195 (41.0) | 766 (72.5) | |
Witness (n, %) | ||||
Yes | 707 (46.1) | 205 (43.1) | 502 (47.5) | 0.108 |
No | 826 (53.9) | 271 (56.9) | 555 (52.5) | |
Outcomes (n, %) | ||||
ROSC | 90 (5.9) | 38 (8.0) | 52 (4.9) | 0.018 |
Survival to admission | 77 (5.0) | 32 (6.7) | 45 (4.3) | 0.041 |
Survival to hospital discharge | 27 (1.8) | 9 (1.9) | 18 (1.7) | 0.796 |