Figure 6.

Histograms of sublingual red blood cell velocities. (A): Healthy volunteers. (B): Patients with normodynamic septic shock (cardiac index = 2.55 ± 0.43 mL/min/m²). (C): Patients with hyperdynamic septic shock (cardiac index = 4.90 ± 0.91 mL/min/m²). The histograms of patients with normo- and hyperdynamic septic shock were similar and shifted to the left (lower velocities). Nevertheless, the mixed venous minus arterial PCO₂ difference was higher in normo- than in hyperdynamic patients (7 ± 2 vs. 5 ± 3 mm Hg, p < 0.05). Reprinted from Ref. [69] with permission of the American Thoracic Society. Copyright © 2023 American Thoracic Society. All rights reserved.