Resistance to Flow in Vascular Beds

Details Resistance to Flow in Vascular Beds Resistance to Flow in Vascular Beds

Jun 1958

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1958natur.181.1607c&link_type=abstract

Nature, Volume 181, Issue 4623, pp. 1607-1608 (1958).

Physics

2

Scientific paper

THE concept of resistance to flow is widely used by physiologists and clinicians when inferring vessel behaviour from pressure and flow data. For a great number of years `resistance to flow' has been defined by physiologists as the ratio of the pressure drop across a vessel system to the flow that results. As so defined, Burton1 has pointed out that ``... resistance to flow is strictly analogous to `resistance' in electrical measurements, which is defined by Ohm's Law'', and he believes that ``resistance to flow remains a useful clarifying concept''. The resistance unit most widely used is the peripheral resistance unit (p.r.u.), which is, according to Green2, ``equivalent to the ohm'', and is defined as 1 p.r.u. = 1 mm. mercury/1 ml. per min.

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