Figure 4
Correlation between hemodynamic and metabolic parameters and occlusion and reperfusion slopes. (a) Correlation between tissue hemoglobin oxygen saturation (StO2) occlusion and reperfusion slopes for 98 measurements performed on 43 patients (day 1, 43 measurements; day 2, 34 measurements; day 3, 21 measurements) during the first 3 days of septic shock. (b) Correlation between reperfusion slope and cardiac output (CO) obtained for 77 measurements, corresponding to 33 patients on day 1, 28 patients on day 2, and 16 patients on day 3. (c) Correlation between lactate plasma concentration and reperfusion slope (48 measurements), corresponding to 23 patients measured on day 1, 18 patients on day 2, and seven patients on day 3. (d) Correlation between the reperfusion slope obtained with laser Doppler and the one obtained with StO2 during the simultaneous occlusion tests: 37 measurements were obtained, on 15 patients on day 1, 13 patients on day 2, and nine patients on day 3. TPU, tissue perfusion units.