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Vertigo of the Stomach Considered of Toxic Origin.
—M. Bovet has made two kinds of investigations. First, an examination of the urine of dyspeptics affected with vertigo. Second, an analysis of the gas of the belchings so frequent at a certain stage of digestion with patients afflicted with vertigo. It is necessary to fix precisely the moment when the gaseous products are collected, for their nature differs essentially according as they form a short time after eating or from five to six hours afterwards. If the first is the case nitrogen and carbonic acid are the chief ingredients; if the latter hydrogen sulphide often is added, and sometimes an ingredient of a sulphocyanic nature, which Bovet found again as sulphocyanic acid in the urine; he thinks that this toxic product acts upon the medulla and determines the phenomenon of vertigo. Poisoning with the derivates of cyanide produces vertigo and tingling
MEDICAL PROGRESS. JAMA. 1889;XII(23):806–808. doi:10.1001/jama.1889.02401000014002
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