Comparative value of peripheral and central venous pCO2 in predicting normal paCO2 during anaesthesia.

The ability of venous pCO2 to predict arterial pCO2 within the normal range was tested by measuring pCO2 in blood sampled simultaneously from a large forearm vein (PER), from the superior vena cava (SVC), and from an artery in 35 anaesthetized patients. The relationship between arterial and both venous pCO2's were studied in a first series of 15 patients (ASA physical status class I-II) anaesthetized with methohexitone, fentanyl, pancuronium and nitrous oxide/oxygen, and in a second series of 20 patients scheduled for cardiac surgery anaesthetized with flunitrazepam, fentanyl, pancuronium and nitrous oxide. A marked correlation was found between arterial and both venous pCO2's samples in the normal patients (a/PER: r = 0.

Stable muscle relaxation during abdominal surgery using combined intravenous bolus and demand infusion: clinical appraisal with ORG NC45.

In order to obtain stable muscle relaxation for intra-abdominal operation, a continuous demand perfusion of ORG NC45 was administered following a loading dose of 0.07 mg . kg-1.