Fig. 3. Relationship between tissue oxygen saturation (Sto2) and hemodynamic variables in the 42 patients with septic shock. ( A ) Pulse oximetry saturation (Spo2) ( P = 0.7). ( B ) Central venous oxygen saturation (Svo2) ( P = 0.3). ( C ) Urine output ( P = 0.4). ( D ) Lactate plasma level ( P = 0.02).