![]() ![]() He was appointed resident intern to professor Alexander Bobrov at the surgical clinic of Moscow University. He entered the medical faculty of Kharkiv University in 1893 and transferred to Moscow University in 1895, where he graduated with distinction in 1898. He attended the Kursk Gymnasium (secondary school). Nikolai Korotkov was born to a merchant family at 40 Milenskaia Street in Kursk on February 26, 1874. Nikolai Sergeyevich Korotkov (also romanized Korotkoff Russian: Никола́й Серге́евич Коротко́в) (26 February 1874 – 14 March 1920) was a Russian Empire surgeon, a pioneer of 20th-century vascular surgery, and the inventor of auscultatory technique for blood pressure measurement. ![]() Imperial Military Academy, Mechnikov Hospital (St Petersburg)Īlexander Bobrov, Sergey Fedorov, M. 301-362, 1980.Invention of auscultatory technique for blood pressure measurement Cambridge, UK: Cambridge University Press, pp. ![]() IN Pedley, TJ, Ed, The Fluid Mechanics of Large-Blood Vessels. The self-excited oscillation in collapsible tubes. Laser doppler measurement of local flow field in collapsible tube during self-excited oscillation. Observations on vascular sounds: The “pistol-shot” sound and the Korotkoff sound. Flow in collapsible tubes: A brief review. Chaotic oscillations in a simple collapsible-tube model. A noninvasive method of studying arterial disease. Gupta R, Miller JW, Yoganathan AP, Udwadia FE, Corcoran WH, and Kim BM. The mechanisms of the compression sounds of Korotkoff. Studies in blood pressure estimation by indirect method: Part II. Med Biol Eng Comput18: 419-426, 1980.ĭrzewiecki GM, Melbin J, and Noordergraaf A. Steady pressure flow relations in compressed arteries: Possible origin of Korotkoff sounds. IEEE Trans Biomed Eng16: 284-295, 1969.Ĭonrad WA, Cohen ML, and Mcqueen DM. Pressure–flow relationships in collapsible tubes. Pressure/flow relationships in collapsible tubes: Effects of upstream pressure fluctuation. Unstable equilibrium behavior in collapsible tubes. These experiments indicate the effectiveness of noninvasive measurement for brachial arterial compliance using Korotkoff sounds.īertram CD. In conclusion, Korotkoff sounds contain useful information for predicting brachial arterial compliance. As a result, we have found that the changes of the sounds largely depended on the difference of the tube compliance in this simulator. The frequency of the sounds was changed by the variation of the tube compliance. In the experiment, we investigated the relationship between the self-excited oscillation and Korotkoff sounds by the distinguishing its frequency characteristics. Additionally, we prepared latex tubes as artificial brachial arteries. The simulator was utilized to generate artificial Korotkoff sounds similar to those in auscultation in the brachial model. We constructed a circulatory simulator with a brachial model that mimics the physiological circulation, because in vivo resolution of nonlinear pressure–flow relationships is very difficult. In this paper, we proposed an arterial-compliance-measuring method, using Korotkoff sounds. In addition, it is influenced by the nonlinear pressure–flow relationships in the artery and the arterial compliance. The self-excited oscillation is an oscillation of the arterial wall. However, in the biomechanics field, Korotkoff sounds are considered to be produced and/or modified by the self-excited oscillation of a collapsed artery. In the medical field, Korotkoff sounds have been explained as sounds generated by the disturbed blood flow in the artery. ![]()
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