EFFECT OF THE LARYNGEAL MASK AIRWAY ON LOWER OESOPHAGEAL SPHINCTER PRESSURE IN PATIENTS DURING GENERAL ANAESTHESIA |
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| Authors: | RABEY P G; MURPHY P J; LANGTON J A; BARKER P; ROWBOTHAM D J |
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| Institution: | Department of Anaesthesia, University of Leicester, Leicester Royal Infirmary Leicester LEI 5WW |
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| Abstract: | We have studied the tone of the lower oesophageal sphincter(LOS) in 40 adults undergoing routine body surface surgery andallocated randomly to receive anaesthesia either by face maskand Guedel airway or by laryngeal mask airway. In the laryngealmask group there was a mean (SEM) decrease in barrier pressure(LOS minus gastric pressure) of 3.6 (1.4) cm H2, compared witha mean increase of 2.2 (1.2) cm H2O in the face mask group (P< 0.005). |
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