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  • Title: [Venous occlusion impedance measurements--standard study conditions and initial normal values].
    Author: Hummel I, Schilling K, Tischmeyer M.
    Journal: Z Gesamte Inn Med; 1982 Dec 15; 37(24):838-43. PubMed ID: 7170820.
    Abstract:
    Issuing from the medical importance of the determination of a measuring size relevant to the total inflow of blood the diagnostic evidence of the evaluation sign defined as phlebemphraxis impedance quotient (VIQ) shall be proved. A standardization of technical and measurement-methodical parameters, such as electrode technique, temperature of the environment. Temporary formation of the measuring cycle, occlusion technique and position of the extremities was necessary in order to avoid influences on the results of the measurement and their reproducibility. Experimental investigations for the reproducibility are described and as a result standard examination conditions for the establishment of the change of impedance which is proportional to the total inflow of blood are proposed. The areas of norm values for VIQ in rest, VIQmax (after load) and VIQmax- retardation established using these standardized conditions are also give.
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