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The Importance of Monitoring Inspired Oxygen Concentrations During Regional Anesthesia
  1. Leland H. Hanowell, MD and
  2. Jeffrey Kanefield, MD
  1. From the U.C. Davis Medical Center, Sacramento, California


The mass spectrometer detected interruption of fresh gas supply for supplemental oxygen administration during regional anesthesia. Conventional monitoring of inspired oxygen concentration would not have permitted recognition of the disconnection described.

  • Monitoring
  • Oxygen
  • Mass spectrometer

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