Table 1 Collective summary of simulated CPR situation results for STD and OTH methods achieved by research participants
Parameters researched | Reference value | STD | OTH | Significance |
|---|---|---|---|---|
Average time of interruptions between compression cycles [s] | Up to 10 s | 9.184 | 7.316 | p < 0.001 |
Depth of chest compressions | Too shallow (< 50 mm) | 3898 27.80% | 3103 20.77% | p < 0.001 |
Correct (50–60 mm) | 7104 50.65% | 8997 60.22% | p < 0.001 | |
Too deep (> 60 mm) | 3022 21.55% | 2840 19.01% | p < 0.001 | |
Rate of chest compressions | Too slow (< 100/min.) | 57 12.84% | 41 8.62% | p < 0.001 |
Correct (100–120/min.) | 206 46.39% | 256 53.78% | p < 0.001 | |
Too fast (> 120/min.) | 181 40.77% | 179 37.60% | p < 0.001 | |
Chest wall recoil | Complete recoil | 11,856 84.54% | 13,664 91.46% | p < 0.001 |
Place of chest compression | Centre of the chest | 13,928 99.32% | 14,889 99.66% | p < 0.001 |
Duty cycle (ratio of the time the chest is compressed to the total time from one compression to the next) | 50%/50% | 42.974% / 57.026% | 42.237% / 57.763% | p > 0.05 |
Compression-ventilation ratio | 30:2 | 78.51% | 81.44% | p > 0.05 |
Tidal volume | Too low (< 480 ml) | 459 51.37% | 401 42.14% | p < 0.001 |
Correct (480–560 ml) | 152 17.05% | 167 17.57% | p > 0.05 | |
Too high (> 560 ml) | 282 31.58% | 354 40.28% | p < 0.001 | |
Stomach inflation | none | 2 0.25% | 3 0.34% | p > 0.05 |