Fig. 3
Plots showing the interaction between chest compression depth and chest compression waveform on blood pressures and EtCO2 that were measured in these experiments. All data are reported as mmHg. The number sign symbol indicates statistical significance (p < 0.05) between waveforms. The ampersand symbol indicates statistical significance (p < 0.05) between chest compression depths. The ampersand symbol indicates statistical significance (p < 0.05) for interactions between the chest compression depth and the compression release time. a Aortic pressure, b right atrial pressure, c coronary perfusion pressure and d end tidal carbon dioxide