Figure 2From: Clinical review: Update on hemodynamic monitoring - a consensus of 16Factors influencing the interpretation of cardiac output (CO). EKG, electrocardiogram; NIRS, near-infrared spectral imaging; OPS, orthogonal polarization spectral imaging; PAOP, pulmonary artery occlusion pressure; PAP, pulmonary artery pressure; PgCO2, gastric intramucosal carbon dioxide partial pressure; RAP, right atrial pressure; SvO2, mixed venous oxygen saturation.Back to article page