[Nasal catheters versus Hudson face mask in oxygen therapy]

Ugeskr Laeger. 1996 Jul 8;158(28):4077-9.
[Article in Danish]


Thirty-two females, ASA class I, scheduled for termination of pregnancy before the 13th week participated in the study. After induction of anaesthesia, a soft plastic catheter was inserted in the oropharynx and the patients were postoperatively monitored with a capnograph, which sampled in- and expired air from the catheter. In a randomized cross-over design the patients received oxygen therapy by the Hudson face-mask and a nasal cannula. Humidified and heated oxygen was given in both cases, using a flow of 15 litres per minute. The nasal cannula resulted in a significantly higher expired end-tidal O2-fraction (FETO2) compared to the Hudson mask. During the nasal cannula period the respiratory rate was significantly lower than during the face mask period. The end-tidal CO2 pressure (PETCO2) remained constant.

Publication types

  • Clinical Trial
  • Comparative Study
  • English Abstract
  • Randomized Controlled Trial

MeSH terms

  • Abortion, Induced
  • Adult
  • Anesthesia, Inhalation*
  • Catheterization / instrumentation
  • Cross-Over Studies
  • Female
  • Humans
  • Masks
  • Nasal Cavity
  • Oxygen Inhalation Therapy / instrumentation*
  • Pregnancy
  • Prospective Studies