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Hämodynamik und Kontraktilität des gesunden und kranken Herzens bei körperlicher Belastung

  • H. Roskamm
Part of the Verhandlungen der Deutschen Gesellschaft für Kreislaufforschung book series (2849, volume 37)

Zusammenfassung

Die einzige Aufgabe des Herzens besteht darin, die Körperperipherie in Ruhe und während Belastung ausreichend mit Blut zu versorgen. Die ausreichende Pumpfunktion des Herzens wird durch eine lineare Beziehung zwischen Herzminutenvolumen und Sauerstoffaufnahme des Gesamtorganismus bestimmt [Zusammenfassung bei Rowell (46) unter Verwendung auch der Untersuchungsergebnisse unseres Arbeitskreises]. Die Linearität ist bis ungefähr 70% der maximalen Sauerstoffaufnahme gewährleistet. Die Steigerung des Herzminutenvolumens geschieht in erster Linie durch Steigerung der Herzfrequenz. Das Schlagvolumen des Herzens erfährt in liegender Position durch die körperliche Belastung nur eine sehr geringe Steigerung. In sitzender oder stehender Körperposition kommt es im Ruhezustand zu einer erheblichen Abnahme des Schlagvolumens, wird in derselben Korperstellung eine Belastung durchgeführt, wird das bei Körperruhe im Liegen vorhandene Schlagvolumen im wesentlichen wieder erreicht.

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Copyright information

© Dr. Dietrich Steinkopff Verlag, Darmstadt 1971

Authors and Affiliations

  • H. Roskamm
    • 1
  1. 1.Medizin. Univ.-Klinik78 Freiburg i. BrGermany

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