• Br J Anaesth · Oct 1992

    Randomized Controlled Trial Comparative Study Clinical Trial

    Effect of the laryngeal mask airway on lower oesophageal sphincter pressure in patients during general anaesthesia.

    • P G Rabey, P J Murphy, J A Langton, P Barker, and D J Rowbotham.
    • Department of Anaesthesia, University of Leicester.
    • Br J Anaesth. 1992 Oct 1;69(4):346-8.

    AbstractWe have studied the tone of the lower oesophageal sphincter (LOS) in 40 adults undergoing routine body surface surgery and allocated randomly to receive anaesthesia either by face mask and Guedel airway or by laryngeal mask airway. In the laryngeal mask group there was a mean (SEM) decrease in barrier pressure (LOS minus gastric pressure) of 3.6 (1.4) cm H2O, compared with a mean increase of 2.2 (1.2) cm H2O in the face mask group (P < 0.005).

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