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This method has reference to the determining the outlines of the stomach after the stomach tube has been passed and the viscus has been inflated with air by means of a rubber bulb. At present two procedures for determining the outlines by percussion are in use, namely, by simple percussion and by auscultatory percussion. That the former is inexact is proved by the fact that the second has been in subsequent use; at times it is difficult to determine whether a tympanitic note is due to the inflated stomach or to a distended colon. As objections to auscultatory percussion, or the ausculting with a stethoscope of the note elicited by percussion, is the fact that the note varies in intensity according to the distance from the stethoscope the organ is percussed, and that there is a boundary zone, in some cases quite wide, of uncertain tympany.
In the method about
MEYERS MK. AN ADDITION TO OUR METHODS OF DETERMINING THE OUTLINES OF THE STOMACH.. JAMA. 1907;XLIX(8):689. doi:10.1001/jama.1907.25320080057003a