Verhalten der Blutdichte in Relation zum Blutdruck im Tierversuch und bei Hämodialyse von Hypertonikern

Kenner, Thomas; Hinghofer‐Szalkay, Helmut; Leopold, H.; Pogglitsch, H

doi:10.1007/978-3-642-72336-0_61

Cited by 2 publications

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“…During blood loss the decrease of the capillary pressure leads to an influx of interstitial fluid into the blood compartment which reduces the blood density. Therefore, in this example there is a positive correlation between blood pressure and blood density (10, 24,26).…”

Section: Blood Pressure and Blood Densitymentioning

confidence: 84%

“…After injection of Angiotensin II a biphasic reaction of the blood density was observed. After a short decrease of the blood density both pressure and density rise (22,25,26). Therefore, it appears that the main reaction of the blood density is again positively correlated to the blood pressure.…”

Section: Blood Pressure and Blood Densitymentioning

confidence: 91%

“…The correlation between blood pressure and blood density during reactions of the resistance vessels appears to depend on the actual changes of the capillary pressure (22,25,26). After injection of Angiotensin II a biphasic reaction of the blood density was observed.…”

Section: Blood Pressure and Blood Densitymentioning

confidence: 97%

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The measurement of blood density and its meaning

Kenner

1989

Basic Res Cardiol

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153

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Density is defined as mass per unit volume. The classical technique to measure the density of fluids consists of a determination of mass and volume. Blood density is proportional to hematocrit or, more exactly, to the total protein concentration of blood; only to a minor extent is blood density influenced by other plasma solutes. Since the introduction of the mechanical oscillator technique for the continuous recording of fluid density a sizeable amount of experience has accumulated. This review summarizes recent work performed with this technique. It appears that the scientific interest in a variable like blood density depends on the availability of a suitable and simple method. Until the oscillator technique was available the measurement of density was too complicated or too inaccurate for routine laboratory use. A further new technique permits us to determine fluid densities by measuring sound velocity transmission. The density dilution method can be used for the determination of distribution volumes, of flow through organs, and of the cardiac output. The influence of temperature and of certain artifacts like acceleration forces in the density measuring device have to be considered any may be used for additional diagnostic purposes like determination of erythrocyte sedimentation velocity. The new technique opens a reasonable simple way to study fluid shift between interstitial space and capillaries. The arterio-venous density gradient in an organ depends on the lymph production. The injection of a hypertonic solution leads to an osmotic fluid shift from the extravascular space towards the blood. This fluid shift can be recognized by a reduction of the blood density. A simple model for the description of this reaction is presented.

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Section: Blood Pressure and Blood Densitymentioning

confidence: 84%

Section: Blood Pressure and Blood Densitymentioning

confidence: 91%