Accurate measurement of arterial tension, which has formed the experimental basis for the physiology of the vascular system since the invention of the kymograph by Ludwig in 1847, has received but little attention from clinicians until of late. The results derived from these laboratory experiments on changes in vascular tension have been appreciated and adopted by the practitioner and form no insignificant part of the rationale of his diagnosis and therapy, but while the methods remained of a nature that restricted them to the laboratory they could have no direct clinical application.
Within the past few years several instruments have been devised which have been constructed on a sufficiently practical principle to admit of their extended clinical use. Already the literature relating to clinical blood-pressure observations is voluminous, and one can not glance over a current medical journal without seeing repeated references to this work. From many of
COOK HW. BLOOD PRESSURE DETERMINATIONS IN GENERAL PRACTICE.INTRODUCING A PRACTICAL INSTRUMENT FOR ROUTINE USE.. JAMA. 1903;XL(18):1199–1202. doi:10.1001/jama.1903.92490180017001f
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