Mixed Venous and Arterial Pco2

Noninvasive measurement of mixed venous PCO2.

Effect of acute hyperventilation on the venous-arterial PCO2 difference

colleagues [1] in the previous issue of Critical Care. Th e letter suggested that acute changes in the arterial partial pressure of carbon dioxide (PaCO2) can aff ect the venous-arterial diff erence in carbon dioxide tension (ΔCO2). In a study by the authors, 10 ventilated and hemodynamically stable patients were included after elective cardiac surgery. Hypocapnia was induced by increasing the ...

Arterial Pco2 and Cerebral Hemodynamics.

REIVICH, MARTIN. Arterial Pcoz and cerebral hemodynamics. Am. J. Physiol. 206(1) : q-35. rg64.---The effect of arterial Pco:! in the control of cerebral hemodynamics over the full range of responsiveness of the cerebral vasculature was studied in the rhesus monkey. Cerebral perfusion pressure and arterial 02 saturation were controlled so that they produced no significant effect on the cerebral ...

Acute hyperventilation increases the central venous-to-arterial PCO2 difference in stable septic shock patients

BACKGROUND To evaluate the effects of acute hyperventilation on the central venous-to-arterial carbon dioxide tension difference (∆PCO2) in hemodynamically stable septic shock patients. METHODS Eighteen mechanically ventilated septic shock patients were prospectively included in the study. We measured cardiac index (CI), ∆PCO2, oxygen consumption (VO2), central venous oxygen saturation (ScvO2...

A large Venous-Arterial PCO2 Is Associated with Poor Outcomes in Surgical Patients

Background. This study evaluated whether large venous-arterial CO(2) gap (PCO(2) gap) preoperatively is associated to poor outcome. Method. Prospective study which included adult high-risk surgical patients. The patients were pooled into two groups: wide [P(v-a)CO(2)] versus narrow [P(v-a)CO(2)]. In order to determine the best value to discriminate hospital mortality, it was applied a ROC (rece...