Physiologie der Hautsinne

Keidel, Wolf-Dieter

doi:10.1007/978-3-642-87657-8_4

Cited by 3 publications

(2 citation statements)

References 320 publications

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“…If the heart rate changes, or during arrhythmic heart beat, Ea tends to increase after prolonged diastolic periods D, according to Equation (5). The matching between ventricle and arterial system during arrhythmia, therefore, has to be characterized by a set of function curves, as shown in Figure 2.…”

Section: The Effective Arterial Elastancementioning

confidence: 99%

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Some comments on ventricular afterload

Kenner

1987

Basic Res Cardiol

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In this issue of Basic Research in Cardiology a paper by Timisjärvi et al. is presented in which the problem of afterload, generated by the resistance against which the left ventricle is ejecting, is discussed. These authors have performed experiments in which they examine the role and validity of the so-called mean outflow resistance (MOR) of the left ventricle. In this editorial, the opportunity is taken to present some thoughts on the different possibilities of expressing the interrelation between the heart and the arterial system. It is intended to show how, from the first ideas about ventricular-arterial interaction bei Ph. Broemser (1935; 1) different concepts about simple descriptions of the functioning of the heart, the arterial system and the matching between both have evolved. In particular, the concept by Sunagawa et al. seems worthy of mention. An examination of this, and several other concepts, prove that the peripheral resistance and, particularly, the MOR, are important parameters that determine the influence of the arterial system on the performance of the heart. However, since MOR by definition is closely related to the total peripheral resistance, there is no essential need to introduce this resistance as a new concept of ventricular afterload. Calculations based on this definition of MOR demonstrate an agreement between theory and experimental results.

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Section: The Effective Arterial Elastancementioning

confidence: 99%

“…In Figure 1, the influence of increasing contractility, as expressed by Ees , and of increasing values of E a are indicated schematically. The most important variation which may lead to an increase of Ea is an increase of the peripheral resistance R (see Equation [5]). p,.…”

Section: Sunagawa's Concept Of Ventricular-arterial Matchingmentioning

confidence: 99%

Some comments on ventricular afterload

Kenner

1987

Basic Res Cardiol

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Gesichtssinn

Schneider¹

1971

Einführung in Die Physiologie Des Menschen

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Stimulierung des Aminosäure-Einbaus in vitro durch niedermolekulare RNA in Chlorella

Galling

1968

Planta

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The nucleic acids of the particle-fraction (pellet 30,000 g) of Chlorella enhance the amino acid incorporation in vitro in cell-free systems of the same organism.After sucrose density gradient centrifugation, the most stimulating RNA component is found to be a low molecular weight RNA sedimenting between the soluble RNA and the smaller ribosomal RNA component. This stimulating RNA is not identical with transfer-RNA.

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Physiologie der Hautsinne

Cited by 3 publications

References 320 publications

Some comments on ventricular afterload

Some comments on ventricular afterload

Gesichtssinn

Stimulierung des Aminosäure-Einbaus in vitro durch niedermolekulare RNA in Chlorella

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