Evaluation of rebreathing in patients undergoing cataract surgery

Ophthalmic Surg. 1988 Apr;19(4):249-51.


Ten patients undergoing elective cataract surgery with local anesthesia were evaluated for rebreathing using mass spectrometry and arterial blood gas analysis. Results showed a 10 or 51 oxygen-air mixture with an inspired oxygen concentration of 50% (FIO2) administered via a face tent maintained normal blood gases and a satisfactorily low inspired carbon dioxide (FICO2) in conscious patients who were free of lung disease.

MeSH terms

  • Adult
  • Aged
  • Carbon Dioxide / analysis
  • Cataract Extraction*
  • Humans
  • Mass Spectrometry
  • Middle Aged
  • Monitoring, Physiologic / methods
  • Neuroleptanalgesia
  • Oxygen / analysis
  • Oxygen / blood*
  • Respiration*


  • Carbon Dioxide
  • Oxygen