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  • 1
    Electronic Resource
    Electronic Resource
    Regional blood volume changes of the lungs in response to the vegetative nerves stimulation (1979)
    Springer
    Pflügers Archiv 382 (1979), S. 171-178 
    Details
    ISSN: 1432-2013
    Keywords: The regional lung electroplethysmography ; Vegetative nerves ; Stimulation ; Vasomotor reaction ; Gravitation factor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Significant regional differences in the values of blood volume change response within one lobe of the lung upon the cervic sympathetic and parasympathetic nerves electrical stimulation have been demonstrated through the use of regional lung electroplethysmography method under the conditions of a minimal surical trauma in dogs, cats, and rabbits kept in a supine position. The vascular component of the reaction has been isolated. It consists in blood volume increase in the lungs during the vagus stimulation and blood volume decrease during the sympathetic nerves stimulation. This response is very well manifested in central portions of the lung lobes and decreases progressively in peripheral direction. Blood volume changes due to different body positions relative to the gravitation direction have been demonstrated. Mechanisms of regional differences in blood volume changes have been discussed. The gravitation factor has been suggested to be also responsible for the formation of the neurogenic vasomotoric reaction in lungs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00584219
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  • 2
    Electronic Resource
    Electronic Resource
    Noninvasive determination of elastic properties and diameter of human limb arteries (1983)
    Springer
    Pflügers Archiv 396 (1983), S. 254-259 
    Details
    ISSN: 1432-2013
    Keywords: Oscillogram ; Elastic resistance ; Vessel ; Radius ; Pressure ; Boyle's law ; Noninvasive determination ; Age
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A method involving application of a standard cuff on human limbs has been developed making it possible by a single procedure to make a quantitative determination of blood pressure, elastic resistance of “uninfluenced” an mechanically relaxed arterial vessel walls, their bulk modulus and effective inner diameter. The method which is based on the “elasticity reservoir theory” involves recording arterial pressure recordings during periods of gradual compression and evaluation of the pulsatile blood volume increment under the cuff at the on step wise decompression. The reproducibility of the results and the errors involved were estimated by comparing the results with measurements made on a physical model and on human limbs. This paper presents some results of the application of the method to 113 healthy persons and shows the age dependence of the examined parameters in the upper arms and in the lower leg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587863
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  • 3
    Electronic Resource
    Electronic Resource
    Active and passive reaction of large arterial vessels to sublingual test with nitroglycerin (1995)
    Springer
    European journal of applied physiology 72 (1995), S. 67-70 
    Details
    ISSN: 1439-6327
    Keywords: Oscillovasometry ; Large arteries ; Nitroglycerin ; Active and passive reaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The noninvasive method of oscillovasometry, devised previously, was applied to the estimation of arterial pressure, effective radius of large arterial vessels, a number of indices showing elastic vessel properties and change in tone of the vessels on the right upper limb just before sublingual administration of nitroglycerin (0.5 mg) to the patients and 4–5 min after it. A group of 96 patients with different levels of arterial pressure were examined. It was found that all the patients showed a pressure decrease and tachycardia, but about a half of them had a passive response in large arterial vessels in the form of a decrease in the vessel volume, while others showed a decrease in arterial vessel tone (vasodilation), i.e. an active vascular response. From the data we drew the conclusion that there are two types of vascular response (active and passive) and they do not depend on the initial level of arterial pressure. Nitroglycerin probably acts more effectively on large arteries with a high initial tone. The possible mechanism of this phenomenon is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00964116
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  • 4
    Electronic Resource
    Electronic Resource
    Elasticity changes in the large arteries of human limbs in response to cycle ergometry performed with upper and lower limbs (1989)
    Springer
    European journal of applied physiology 59 (1989), S. 390-397 
    Details
    ISSN: 1439-6327
    Keywords: Cycle ergometry ; Large arteries ; Elastic properties of blood vessels ; Constriction ; Dilatation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary At rest and after cycle ergometry the elastic properties of the large arteries of limbs of healthy men were examined using an original non-invasive quantitative oscillometric method. It has been shown that in response to muscle work performed with the legs there is a decrease of the effective inner radius, and an increase of the characteristic impedance modulus and bulk modulus and of the elastic resistance of the intact and relaxed wall in the large arteries in the upper limbs. All these changes testify to an increase of vascular tension in the upper limbs. In response to work performed with the hands, there is an increase of the effective inner radius of large arteries of the upper limbs, a large increase of the pulsatile blood volume increment of the intact vessels and a decrease of the characteristic impedance modulus, of the bulk modulus and of the elastic resistance of the intact arterial wall. These changes indicate a decrease of the vascular tension of these arteries. In response to work performed either with the legs or with the hands a decrease of the effective inner radius of large arteries and an increase of the elastic resistance of the relaxed arterial wall were observed in the lower limbs, all these changes indicating relatively small changes in tone of these vessels. It is concluded that the wall tension of large arteries supplying blood to the muscles of non-working limbs is increased. Vascular tension changes in the arteries in working limbs are accounted for by the superimposition of centrally originating vasoconstriction with local vasodilatation, which also affects large arteries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02389816
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  • 5
    Electronic Resource
    Electronic Resource
    Noninvasive quantitative evaluation of the characteristic impedance modulus of human limb arteries (1985)
    Springer
    Bulletin of experimental biology and medicine 100 (1985), S. 1305-1308 
    Details
    ISSN: 1573-8221
    Keywords: Large artery ; characteristic impedance modulus ; postural effects ; physical exertion ; vasoconstriction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00837840
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  • 6
    Electronic Resource
    Electronic Resource
    Electroplethysmographic determination of the regional relative blood volume of the lungs (1978)
    Springer
    Bulletin of experimental biology and medicine 85 (1978), S. 109-112 
    Details
    ISSN: 1573-8221
    Keywords: lungs ; regional blood volume of the lungs ; electroplethysmography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract On the basis of a theoretical investigation of a biophysical model of the lung structure and subsequent experimental verification of the results, a method of calculating the regional relative blood volume of the lungs from the data of electroplethysmographic investigation of the lungs and the results of measurement of the specific electrical conductivity of the blood is suggested. Equations for calculating the regional relative blood volume of the lungs are derived and their working range is established so far as the use of the proposed method of calculation in clinical and physiological investigations of the lungs is concerned.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00801471
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  • 7
    Electronic Resource
    Electronic Resource
    Regional neurovasomotor responses of the pulmonary circulation (1979)
    Springer
    Bulletin of experimental biology and medicine 88 (1979), S. 1242-1244 
    Details
    ISSN: 1573-8221
    Keywords: Lungs ; circulation ; regional differentiation ; neurogenic vasomotor responses
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The blood volume and blood flow in the lungs with the body in the horizontal and vertical position and during stimulation of sympathetic and vagus nerves were studied by the method of regional electroplethysmography in experiments on anesthetized cats with an intact thorax. The hydrostatically more heavily loaded regions of the lungs were found to be more labile toward the action of a neurogenic stimulus, as was manifested by an increase in the parasympathetic vasomotor response of the basal regions and a decrease in the response of the apical regions with the body in a vertical position. The results suggest the existence of regionally differentiated mechanisms of vasomotor control in the pulmonary circulation, aimed at compensating for postural changes in the pulmonary hemodynamics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00835560
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of posture on elastic properties of the arteries and hemodynamics of human limbs (1983)
    Springer
    Bulletin of experimental biology and medicine 95 (1983), S. 5-8 
    Details
    ISSN: 1573-8221
    Keywords: large arteries ; elasticity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00831209
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  • 9
    Electronic Resource
    Electronic Resource
    Blood volume and distensibility of the pulmonary vessels after division and stimulation of the vagus nerves (1983)
    Springer
    Bulletin of experimental biology and medicine 95 (1983), S. 258-261 
    Details
    ISSN: 1573-8221
    Keywords: lungs ; electroplethysmography ; blood volume ; distensibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00830158
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  • 10
    Electronic Resource
    Electronic Resource
    Viscoelastic properties of human arteries relaxed by counterpressure (1980)
    Springer
    Mechanics of composite materials 15 (1980), S. 736-741 
    Details
    ISSN: 1573-8922
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00605421
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