Pre-oxygenation: the Hudson mask as an alternative technique

Anaesthesia. 1992 Nov;47(11):974-6. doi: 10.1111/j.1365-2044.1992.tb03203.x.


The use of a simple oxygen facemask (Hudson) with high oxygen inflow (48 l.min-1) was investigated as a technique for pre-oxygenation, comparing it with the Magill system (oxygen flow: 100 One hundred and thirty-eight patients scheduled for elective gynaecological and orthopaedic surgery were studied: group 1, Hudson mask and group 2, Magill system (ASA 1-2, n = 107); group 3, Hudson mask and group 4, Magill system (ASA 3, n = 30). Pre-oxygenation was assessed by measuring the times to 97%, 95% and 93% arterial desaturation (finger pulse oximetry) following 3 min of pre-oxygenation. The times taken to achieve these end-points in all the study groups suggest that the Hudson mask offers an alternative technique for pre-oxygenation.

Publication types

  • Clinical Trial
  • Comparative Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Anesthesia, General*
  • Anesthesia, Intravenous*
  • Female
  • Humans
  • Male
  • Masks*
  • Middle Aged
  • Oxygen / administration & dosage*
  • Oxygen / blood
  • Patient Acceptance of Health Care
  • Time Factors


  • Oxygen