Table 1 Data of the OHCA patients
| Total | POCT | No POCT | |||||
|---|---|---|---|---|---|---|---|
| Source data | |||||||
| n | 263 |
98 (37%) Arterial 35 (36%)/venous 63 (64%) | 165 (63%) | ||||
| Mean age (years) | 70 (± 13) | 69 (± 14) | 70 (± 13) | p = 0.86 | |||
| Gender | 185 male (70%) | 78 female (30%) | 73 male (74%) | 25 female (26%) | 112 male (68%) | 53 female (32%) | p = 0.26 |
| Mean number patients with known pre-existing diseases | 1.3 (± 0.9) | 1.2 (± 0.9) | 1.3 (± 1.0) | p = 0.15 | |||
| Mean PES | 2.57 (± 0.8) | 2.5 (± 0.8) | 2.6 (± 0.7) | p = 0.13 | |||
| Observed collapse | 149 (57%) | 61 (62%) | 88 (53%) | p = 0.20 | |||
| Initial VF/pVT | 69 (26%) | 38 (39%) | 31 (19%) | p < 0.001 | |||
| Initial Asys/PEA | 194 (74%) | 60 (61%) | 134 (81%) | p < 0.001 | |||
| Cardiac cause suspected | 181 (69%) | 72 (73%) | 109 (66%) | p = 0.21 | |||
| POCT | |||||||
| pH 7.35–7.45 | 4 (4%) | ||||||
| pH < 7.35 | 91 (93%) | ||||||
| pH < 7.35 + pCO2 > 50 [BE in norm] | 2 (2%) | ||||||
| pH < 7.35 + BE < − 2 [pCO2 in norm] | 13 (13%) | ||||||
| pH < 7.35 + pCO2 > 50 + BE < − 2 | 68 (69%) | ||||||
| pH < 7.2 | 77 (79%) | ||||||
| pH < 7.2 + BE < − 5 [regardless of CO2] | 62 (63%) | ||||||
| K+ > 5.2/K+ < 3.5 mmol/l | 33 (34%) | ||||||
| K+ > 5.2 mmol/l | 22 (23%) | ||||||
| K+ < 3.5 mmol/l | 11 (11%) | ||||||
| K+ > 6.0/K+ < 2.5 mmol/l | 17 (17%) | ||||||
| K+ > 6.0 mmol/l | 16 (16%) | ||||||
| K+ < 2.5 mmol/l | 1 (1%) | ||||||
| Lactate > 2.5 mmol/l | 90 (92%) | ||||||
| Glucose (1 mg/dl = 0.056 mmol/l) | > 200 mg/dl: 58 (59%) | ||||||
| < 50 mg/dl: 2 (2%) | |||||||
| Specific therapy | |||||||
| Bicarb 8.4% | 84 (32%) | 61 (62%) | 23 (14%) | p < 0.001 | |||
| Bicarb 8.4% in cases where, pH < 7.35 + BE < − 2 | 11 (18%) | ||||||
| Bicarb 8.4% in cases where, pH < 7.2 + BE < − 5 | 50 (82%) | ||||||
| K+-specific therapy | 22 (8%) | 22 (22%) | 0 (0%) | ||||
| Calcium 10% | 8 (36%) | ||||||
| KCl 7.45% | 14 (64%) | ||||||
| KCl 7.45% + Bicarb 8.4% | 10 (71%) | ||||||
| Treatment time | |||||||
| Mean treatment time (min) | 57 (± 19) | 60 (± 17) | 54 (± 20) | p = 0.07 | |||
| Mean time to POCT (min) | 37 (± 21) | ||||||
| POCT before ROSC | 26 (± 15) | ||||||
| Outcome | |||||||
| ROSC | 141 (54%) | 72 (73%) | 69 (42%) | p < 0.001 | |||
| Hospital admission | 163 (62%) | 79 (81%) | 84 (51%) | p < 0.001 | |||
| With ROSC | 122 (46%) | 65 (82%) | 57 (68%) | p < 0.001 | |||
| Ongoing CPR | 41 (16%) | 14 (18%) | 27 (32%) | p = 0.78 | |||
| Discharged | 55 (21%) | 29 (30%) | 26 (16%) | p = 0.01 | |||