Original Article

Changes in Transcutaneous Carbon Dioxide, Oxygen Saturation, and Respiratory Rate after Interscalene Block

Background: We used transcutaneous (TC) carbon dioxide (CO2) monitoring to prospectively evaluate changes in respiratory status after interscalene anesthesia in 45 adults (40 successful and 5 unsuccessful blocks). Methods: TC-CO2 oxygen saturation and respiratory rate were recorded every minute for 5 minutes before block and every 2 minutes for a…