Abstract
We reported the anesthetic management of a 64yr-old-male patient during pulmonary resetion associated with intraoperative asthmatic attack. We continuously monitored PaO2 and PaCO2 using an intravascular blood gas monitoring system (Paratrend 7TM, Biomedical Sensors Co.). Although ETCO2 remaind constant, PaO2 declined and PaCO2 increased imme-diately. We treated the asthmatic attack while monitoring PaO2 and PaCO2, and the operation was completed successfully. This method of monitoring offers advantages over blood gas analysis and transcutaneous oxygen saturation monitoring because it measures the absolute values of PaO2 and PaCO2 continuously.