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October 22, 1904


JAMA. 1904;XLIII(17):1235. doi:10.1001/jama.1904.02500170053008

That certain conditions are attended more or less constantly with a blood-pressure that varies only within narrow limits might be inferred from a priori reasoning, but knowledge on this subject is as yet too scanty to permit of the formulation of definite conclusions. As a matter of fact, it is only within comparatively recent times that methods have been devised by means of which it is possible to measure the blood-pressure with the facility necessary to make such a method of clinical utility. An important step forward would, indeed, be made if the conditions under which blood-pressure is raised or lowered respectively were established, as it is probable that information of this character would constitute a most valuable therapeutic guide. While it seems likely that the blood-pressure is subject to considerable variations even under apparently like conditions, it may be found, nevertheless, that it pursues a certain curve that may