Continuous intra-arterial blood gas monitoring during thoracic surgery

Abstract

The agreement between CIABG and ABG measurements was better for PCO(2) and pH than for PO(2). The PO(2) value displayed on the CIABG monitor may not always be reliable during thoracic surgical procedures.

Progressive changes in arterial oxygenation during one-lung anaesthesia are related to the response to compression of the non-dependent lung

“…The dependent lung was ventilated with a tidal volume of 8 ml kg ±1 and an FI O 2 of 0.8. Patients who require OLV are routinely ventilated at 10 ml kg ±1 during two-lung ventilation, and a smaller tidal volume during OLV 20 to avoid damage from increased airway pressure (barotrauma). An FI O 2 of 0.8 was chosen to reduce the risk of oxygen toxicity and absorption atelectasis and to maintain adequate oxygenation.…”

Spontaneous reversal of the ‘wall effect’: another possible cause for inaccurate continuous intra‐arterial blood gas monitoring data

“…Although the phenomenon was rarely seen in our total clinical experience of over 200 cases, the ‘wall effect’ is considered to be one of the major causes of inaccurate CIABG data. In our previous research, specifically involving a total of 28 oesophagectomy patients [2–4] and 50 patients who underwent thoracotomy [5], the ‘wall effect’ was never observed.…”