what year was blood pressure first recorded?

Answer 1

Poiseuille introduced the units (mmHg) by which we measure blood pressure by using the mercury manometer, which he described in his medical school thesis in 1828. For 50 years, mean blood pressure was all that could be measured because of the long response time of the mercury manometer.

Systolic and diastolic pressures were first measured and recorded in 1878 when Golz and Gaule created a valved device that permitted the use of the slowly responding mercury manometer to display these pressures accurately.

Answer 2

In 1905, Korotkoff developed a new method to measure blood pressure in humans. This auscultatory method of arterial pressure measurement was later described in detail for the first time in "Experiments for Determining the Strength of Arterial Collaterals," his dissertation for the advanced scientific degree of Doctor of Medical Sciences.2 The dissertation was presented in 1910 to the Scientific Council of the Imperial Military Medical Academy. His reviewers, Professors S.P. Fedorov and V.A. Oppel and Privat-Docent (equivalent to Associate Professor) N.N. Petrov, unanimously acknowledged that Korotkoff's scientific results represented a major discovery, which revolutionized the existing field of diagnosis of diseases of the heart and vessel.
In 1934, Harry Goldblatt and colleagues published an article titled "The Production of Persistent Elevation of Systolic Blood Pressure by Means of Renal Ischemia" in the Journal of Experimental Medicine. One year earlier, John Loesch had published a similar study in a German-language journal, Zentralblatt für Innere Medizin. His article appeared on 18 and 25 February 1933, in 3 parts, under the title "A Contribution to Experimental Nephritis and to Arterial Hypertension." The central proposition of both papers was the same: Renal ischemia causes persistent hypertension. Goldblatt's article is one of the best known in the history of medicine, and the words "Goldblatt kidney" are still commonly used. Although Loesch succeeded in producing persistent hypertension by inducing ischemia and in correctly interpreting this and its ramifications earlier than Goldblatt, his article has been cited only a few times. In this article, the authors share what is known about the studies of Loesch and of Goldblatt. They believe that both Loesch and Goldblatt should receive equal credit for these important first observations.