Table 1.
Baseline characteristics of patients with out-of-hospital cardiac arrest admitted to Aarhus University Hospital.
| Parameter | ROSC on admission (n = 698) | Refractory OHCA with MCS (n = 101) | Refractory OHCA without MCS (n = 216) |
|---|---|---|---|
| Age (years) | 67 [56–75] | 56 [46–62] | 67 [57–74] |
| Age ≤ 65 years | 314 (45) | 85 (84) | 100 (46) |
| Sex (male) | 533 (76) | 81 (80) | 160 (77) |
| Comorbidities | |||
| Ischaemic heart disease | 131 (19) | 14 (14) | 42 (19) |
| Hypertension | 240 (34) | 23 (23) | 62 (29) |
| Diabetes | 90 (13) | 11 (10) | 30 (14) |
| CKD | 23 (3) | 2 (2) | 13 (6) |
| COLD | 86 (12) | 1 (1) | 20 (9) |
| Witnessed arrest | 624 (89) | 84 (83) | 181 (84) |
| Bystander CPR | 645 (92) | 99 (98) | 192 (89) |
| First monitored rhythm | |||
| VF/VT | 501 (72) | 61 (60) | 82 (39) |
| PEA | 103 (15) | 26 (26) | 69 (32) |
| Asystole | 90 (13) | 14 (14) | 63 (29) |
| Pre-hospital defibrillation | 539 (77) | 69 (68) | 105 (49) |
| Signs of life during CPR | 331 (47) | 36 (36) | 28 (13) |
| Time stamps | |||
| No-flow (min) | 0 [0–2] | 0 [0–2] | 0 [0–2] |
| No-flow > 10 min | 39 (6) | 6 (6) | 24 (11) |
| Time from arrest to arrival at catheterisation laboratory | 71 [55–90] | 75 [60–88] | 62 [47–81] |
| Total low-flow (min) | 15 [8–22] | 105 [94–123] | 79 [63–103] |
| Cardiac arrest cause | |||
| AMI | 315 (45) | 56 (55) | 57 (26) |
| Primary arrhythmia | 252 (36) | 18 (18) | 29 (13) |
| Pulmonary embolism | 15 (2) | 10 (10) | 12 (6) |
| Aortic dissection | 5 (1) | 1 (1) | 16 (7) |
| Neurological | 16 (2) | 3 (3) | 2 (1) |
| Respiratory | 49 (7) | 0 (0) | 8 (4) |
| Toxic | 11 (2) | 6 (6) | 1 (1) |
| Other | 7 (1) | 3 (3) | 2 (1) |
| cUnknown | 28 (4) | 4 (4) | 89 (41) |
Data are presented as median and interquartile ranges and absolute number and percentages.
Abbreviations: AMI acute myocardial infarction, CKD chronic kidney disease, COLD chronic obstructive lung disease, CPR cardiopulmonary resuscitation, MCS mechanical circulatory support, PEA pulseless electrical activity, OHCA out-of-hospital cardiac arrest, ROSC return of spontaneous circulation, VF ventricular fibrillation, VT ventricular tachycardia.