• Ugeskrift for laeger · Jul 1996

    Randomized Controlled Trial Comparative Study Clinical Trial

    [Nasal catheters versus Hudson face mask in oxygen therapy].

    • J Lund, R J Holm-Knudsen, J Nielsen, and P B Føge Jensen.
    • Anaestesi-og intensivafdeling, Amtssygehuset i Herlev.
    • Ugeskr. Laeg. 1996 Jul 8;158(28):4077-9.

    AbstractThirty-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.

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