Table 2.
Out-of-hospital cardiac arrest event characteristics and post-arrest care
| All patients (n = 190) | LVEF < 40% (n = 83) | LVEF ≥ 40% (n = 107) | p valuea | |
|---|---|---|---|---|
| Cardiac etiology | 0.088 | |||
| Yes | 148 (78) | 69 (84) | 79 (74) | |
| No | 41 (22) | 13 (16) | 28 (26) | |
| Witnessed event | 0.131 | |||
| Yes | 130 (68) | 62 (74) | 68 (64) | |
| No | 61 (32) | 22 (26) | 39 (36) | |
| Location | 0.266 | |||
| Health care facility | 58 (30) | 22 (26) | 36 (34) | |
| Non-healthcare facility | 133 (70) | 62 (74) | 71 (66) | |
| CPR | 0.173 | |||
| Bystander | 41 (21) | 21 (25) | 20 (19) | |
| Health Professional | 61 (32) | 21 (25) | 40 (37) | |
| No | 89 (47) | 42 (50) | 47 (44) | |
| First pulseless rhythm, n (%) | 0.079 | |||
| Shockable | 65 (34) | 34 (40) | 31 (29) | |
| Non-shockable | 126 (66) | 50 (60) | 76 (71) | |
| Number of defibrillations | 0.016 | |||
| No | 81 (45) | 28 (36) | 53 (52) | |
| 1–4 | 48 (27) | 20 (26) | 28 (28) | |
| > 4 | 50 (28) | 30 (38) | 20 (20) | |
| Epinephrine | 0.17 | |||
| No dose | 47 (25) | 16 (19) | 31 (29) | |
| 1–3 doses | 74 (39) | 31 (38) | 43 (40) | |
| > 3 doses | 68 (36) | 30 (43) | 33 (31) | |
| Duration of resuscitation, median (IQR), min | 21 (13,41) | 25 (18, 47) | 20 (10, 34) | 0.001 |
| Hypothermia | 0.067 | |||
| Yes | 160 (84) | 75 (89) | 85 (79) | |
| No | 31 (16) | 9 (11) | 22 (21) | |
| Duration of ROSC to echo median (IQR), h | 6.25 (3.80, 11.38) | 5.28 (3.18, 13.25) | 7.07 (4.1, 11.22) | 0.198 |
LVEF left ventricular ejection fraction, CPR cardiopulmonary resuscitation, IQR interquartile range, ROSC return of spontaneous circulation, Echo echocardiography
a
Comparing patients with LVEF LVEF < 40% to those with LVEF ≥ 40%