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British Journal of Anaesthesia, 1993, Vol. 70, No. 3 360-362
© 1993 The Board of Management and Trustees of the British Journal of Anaesthesia

letter

STUDIES OF GASTRIC CONTENT: COMPARISON OF TWO METHODS

E. SøREIDE, M.D., J. A. SøREIDE, M.D., PH.D., H. HOLST-LARSEN, M.D and P. A. STEEN, M.D., PH.D.

Rogaland Central Hospital Armauer Hansensvei 20, 4011 Stavanger, Norway
Department of Anaesthesia, UUeval Hospital 0407 Oslo 4, Norway
Department of Anaesthesia Rogaland Central Hospital Armauer Hansensvei 20, 4011 Stavanger, Norway
Department of Surgery Rogaland Central Hospital Armauer Hansensvei 20, 4011 Stavanger, Norway

In 20 patients studied under general anaesthesia, we found good agreement between gastric fluid volumes aspirated blindly and total volumes determined by fibreoptic gastroscopy (mean underestimation 6ml (22%); range 0–50ml). Gastric fluid acidity measurements using an electronic pH meter and pH indicator paper also provided results with good agreement (mean difference in pH 0.1; range —0.3 to 0.5). As the use of a standardized blind gastric aspiration technique and pH indicator paper is simpler and provided sufficiently accurate measurements for clinical study purposes, we think this method is preferable. (Br. J. Anaesth. 1993; 70: 360–362)


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