Table 2. Features and interventions of cardiac arrest events by neurological status at hospital discharge.
| Variables | All patients (n = 796) |
Patients with a favourable neurological outcome at hospital discharge (n = 94) |
Patients without a favourable neurological outcome at hospital discharge (n = 702) |
p-value |
|---|---|---|---|---|
| Initial cardiac arrest rhythm, n (%) | <0.001 | |||
| Pulseless electrical activity | 268 (33.7) | 25 (26.6) | 243 (34.6) | |
| Asystole | 375 (47.1) | 28 (29.8) | 347 (49.4) | |
| VFa/ Pulseless VTb | 153 (19.2) | 41 (43.6) | 112 (16.0) | |
| CPRc duration (min), median (IQRd) | 15 (7–26.3) | 8 (5–15) | 15 (8–29) | <0.001 |
| Time to defibrillation (min),e median (IQR) | 2 (0–9) | 1 (0–2) | 2.5 (0–12) | 0.009 |
| Arrest location, n (%) | 0.190 | |||
| Intensive care unit | 388 (48.7) | 54 (57.4) | 334 (47.6) | |
| Monitored unit | 91 (11.4) | 10 (10.6) | 81 (11.5) | |
| Nonmonitored unit | 317 (39.8) | 30 (31.9) | 287 (40.9) | |
| Arrest at night, n (%) | 252 (31.7) | 33 (35.1) | 219 (31.2) | 0.479 |
| Arrest on weekend, n (%) | 234 (29.4) | 26 (27.7) | 208 (29.6) | 0.810 |
| Interventions begun prior to arrest, n (%) | ||||
| Mechanical ventilation | 156 (19.6) | 15 (16.0) | 141 (20.1) | 0.407 |
| Intravenous vasopressors | 311 (39.1) | 34 (36.2) | 277 (39.5) | 0.575 |
| Intravenous antiarrhythmics | 75 (9.4) | 16 (17.0) | 59 (8.4) | 0.013 |
| Pulmonary artery catheter | 10 (1.3) | 4 (4.3) | 6 (0.9) | 0.022 |
| Hemodialysis | 66 (8.3) | 6 (6.4) | 60 (8.5) | 0.556 |
| Intra-aortic balloon pumping | 10 (1.3) | 3 (3.2) | 7 (1.0) | 0.103 |
| CASPRIf score, median (IQR) | 24 (19–28) | 17 (12.3–22) | 25 (20–28) | <0.001 |
a VF, ventricular fibrillation
b VT, ventricular tachycardia
c CPR, cardiopulmonary resuscitation
d IQR, interquartile range
e For arrests due to VF or pulseless VT
f CASPRI score, Cardiac Arrest Survival Post-resuscitation In-hospital score