Summary
A modification of the method of differential pressure measurement for registering the volume velocity of the blood flow is described. A rubber tube is connected to the blood vessel. The difference in the lateral pressure exerted in its two consecutive points is, in accordance with the Poiseuille formula, proportional to the volume velocity of the flow. This difference is registered by a differential pressure gauge. The rubber tube has a screw clamp between the side branches connected to the pressure gauge, providing means of controlling the resistance of the corresponding section of the tube, and thereby the sensitivity of the whole instrument.
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Dokunin, A.V. A modification of the method of differential manometry for registration of the volume velocity of the blood flow. Bull Exp Biol Med 46, 1414–1417 (1958). https://doi.org/10.1007/BF00845194
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DOI: https://doi.org/10.1007/BF00845194