title: A comparative evaluation of transcutaneous and end-tidal measurements of CO2 in thoracic anesthesia.
abstract: We 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.
authors.affiliation: Department of Anesthesiology, Nagasaki University School of Medicine, Nagasaki, Japan.
authors.forename: Motoko
authors.initials: M
authors.lastname: Oshibuchi
authors.forename: Sungsam
authors.initials: S
authors.lastname: Cho
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Hara
authors.forename: Shiro
authors.initials: S
authors.lastname: Tomiyasu
authors.forename: Tetsuji
authors.initials: T
authors.lastname: Makita
authors.forename: Koji
authors.initials: K
authors.lastname: Sumikawa
mesh_terms: D000759:Adjuvants, Anesthesia; D000368:Aged; D000758:Anesthesia; D001999:Bronchoscopy; D002245:Carbon Dioxide / Q000097:blood*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008874:Midazolam; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D010092:Oximetry; D011013:Pneumonectomy; D011659:Pulmonary Gas Exchange / Q000502:physiology; D013908:Thoracotomy
chemical_list: D000759:Adjuvants, Anesthesia; D002245:Carbon Dioxide; D008874:Midazolam