Table 1.
Characteristics of patients without ROSC when ELT started rSO2 monitoring.
| Type of serial change in cerebral rSO2 |
p Value | ||
|---|---|---|---|
| Type 1: Increasing type (N = 40) | Type 2: Non-increasing type (N = 47) | ||
| Sex, n (%) | |||
| Male | 20 (50.0) | 28 (59.6) | 0.395 |
| Age, years, median (IQR) | 80.5 (72–85.5) | 81 (71–84) | 0.932 |
| Initial rhythm, n (%) | 0.097 | ||
| VF | 5 (12.5) | 3 (6.4) | |
| PEA | 16 (40.0) | 11 (23.4) | |
| Asystole | 19 (47.5) | 33 (70.2) | |
| Witness, n (%) | 0.003 | ||
| + | 25 (62.5) | 14 (29.8) | |
| - | 15 (37.5) | 33 (70.2) | |
| Bystander CPR, n (%) | 0.735 | ||
| + | 21(52.5) | 21 (44.7) | |
| − | 16 (40.0) | 21 (44.7) | |
| Unknown | 3 (7.5) | 5 (10.6) | |
| Administration of adrenaline by ELT, n (%) | 0.001 | ||
| + | 16 (40.0) | 4 (8.51) | |
| − | 24 (60.0) | 41 (87.2) | |
| Unknown | 0 (0.0) | 2 (4.7) | |
| Initial rSO2 value, median (IQR) | 42.1 (35.6–47.8) | 45.6 (40.1–49.7) | 0.114 |
| Drop phenomenon, n (%) | 0.33 | ||
| + | 3 (7.5) | 1 (2.13) | |
| - | 37 (92.5) | 46 (98.9) | |
CPR, cardiopulmonary resuscitation; ELT, emergency life-saving technician; IQR, interquartile range; PEA, pulseless electrical activity; ROSC, return of spontaneous circulation; rSO2, regional saturation of oxygen; VF, ventricular fibrillation.