• Anesthesia and analgesia · Sep 2003

    Comparative Study Clinical Trial

    A comparative evaluation of transcutaneous and end-tidal measurements of CO2 in thoracic anesthesia.

    • Motoko Oshibuchi, Sungsam Cho, Tetsuya Hara, Shiro Tomiyasu, Tetsuji Makita, and Koji Sumikawa.
    • Department of Anesthesiology, Nagasaki University School of Medicine, Nagasaki, Japan.
    • Anesth. Analg. 2003 Sep 1;97(3):776-9.

    AbstractWe performed this study to assess the accuracy of transcutaneous CO(2) (PTCCO(2)) monitoring compared with end-tidal CO(2) (PETCO(2)) in thoracic anesthesia. Twenty-six patients undergoing pneumonectomy with thoracotomy for which a long period of one-lung ventilation (OLV) was required were studied. The lungs were mechanically ventilated in the lateral decubitus position. PTCCO(2), PETCO(2), and arterial CO(2) (PaCO(2)) were simultaneously measured during two-lung ventilation (TLV) and during OLV at intervals of 15 min. All patients completed the study protocol. Bland-Altman analysis revealed a bias of -0.4 mm Hg with a precision of +/-2.5 mm Hg during OLV and 1.4 mm Hg with +/-4.3 mm Hg during TLV when PTCCO(2) and PaCO(2) were compared and revealed a bias of -5.8 mm Hg with a precision of +/-4.1 mm Hg during OLV and -7.1 mm Hg with +/-4.6 mm Hg during TLV when PETCO(2) and PaCO(2) were compared. We conclude that PTCCO(2) monitoring is accurate for evaluating CO(2) levels during thoracic anesthesia.

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