Ratio of ''Central Venous-to-Arterial Co2 Gap'' to ''Arterial-to-Central Venous O2 Content Gap'' in Septic Shock

The high ratio of "central venous to arterial carbon dioxide" to "arterial to central venous oxygen content " is associated with elevated lactate in patients with septic shock. So, the aim of the present study is to evaluate the ratio of "central venous-to-arterial CO2 tension or content" to "arterial-to-venous O2 content'' as an indicator of anaerobic metabolism in septic shock.