咽頭手術での経皮炭酸ガスモニタの有用性 Transcutaneous Carbon Dioxide Measurement in Patients Undergoing Laryngosurgery
To investigate the accuracy and usefulness of combined transcutaneous carbon dioxide (PtcCO<sub>2</sub>) and oxygen (PtcO<sub>2</sub>) measurement compared with arterial blood gas analysis (PaCO<sub>2</sub> and PaO<sub>2</sub>), 10 patients undergoing laryngomicrosurgery under total intravenous anesthesia were studied. The PtcCO<sub>2</sub> values revealed a high degree of correlation with PaCO<sub>2</sub> during anesthesia (r=0.96) and after anesthesia (r=0.93). The PaO<sub>2</sub> values revealed a generally good correlation with PaO<sub>2</sub> during anesthesia (r=0.81), but not after anesthesia (r=0.23). Capnography values are invalid after anesthesia, and an arterial catheter is not always indicated and feasible in microlaryngoscopy. Transcutaneous devices provide an effective method for the non-invasive monitoring of PCO<sub>2</sub> during and after anesthesia, in situations whereas continuous, precise control of CO<sub>2</sub> levels is desired such as laryngomicrosurgery.
耳鼻咽喉科臨床 94(9), 825-828, 2001-09-01
The Society of Practical Otolaryngology