[Nasal catheters versus Hudson face mask in oxygen therapy].
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.
Lund
J
J
Anaestesi-og intensivafdeling, Amtssygehuset i Herlev.
Holm-Knudsen
R J
RJ
Nielsen
J
J
Føge Jensen
P B
PB
D000028:Abortion, Induced; D000328:Adult; D000769:Anesthesia, Inhalation; D002404:Catheterization / Q000295:instrumentation; D018592:Cross-Over Studies; D005260:Female; D006801:Humans; D008397:Masks; D009296:Nasal Cavity; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation*; D011247:Pregnancy; D011446:Prospective Studies
Nasalkateter versus Hudson-ansigtsmaske ved iltterapi.