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A sphygmomanometer (/ ˌ s f ɪ ɡ m oʊ m ə ˈ n ɒ m ɪ t ə r / SFIG-moh-mə-NO-mi-tər), also known as a blood pressure monitor, or blood pressure gauge, is a device used to measure blood pressure, composed of an inflatable cuff to collapse and then release the artery under the cuff in a controlled manner, [1] and a mercury or aneroid manometer to measure the pressure.
A more accurate value of systolic blood pressure can be obtained with a sphygmomanometer and palpating the radial pulse. [11] Methods using constitutive models have been proposed to measure blood pressure from radial artery pulse. [citation needed] The diastolic blood pressure cannot be estimated by this method. The American Heart Association ...
Samuel Siegfried Karl Ritter von Basch (9 September 1837, Prague – 25 April 1905) was an Austrian-Jewish physician who was best known as the personal physician of emperor Maximilian of Mexico and the inventor of the blood pressure meter (also known as sphygmomanometer).
Riva Rocci's major contribution to medicine was the invention of an easy-to-use version of the mercury sphygmomanometer which measured brachial blood pressure. [1] [2] [5] The key element of this design was the use of a cuff that encircled the arm; previous designs had used rubber bulbs filled with water or air to manually compress the artery or other technically difficult methods to measure ...
The sphygmograph (/ ˈ s f ɪ ɡ m ə ˌ ɡ r æ f, ˌ ɡ r ɑː f / [1] [2] SFIG-mə-graf) was a mechanical device used to measure blood pressure in the mid-19th century. It was developed in 1854 by German physiologist Karl von Vierordt (1818–1884). It is considered the first external, non-intrusive device used to estimate blood pressure.
Hence, cuff pressure is lowered and the overall blood volume remains constant. As blood volume and thus PG is held constant over time, the pressure difference between cuff pressure and intra-arterial pressure is zero. Intra-arterial pressure is equal to cuff pressure, which can easily be measured by means of the manometer M. [citation needed]