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Kann die Mitralregurgitation bei Papillarmuskel-dysfunktion mit Hilfe dopplerechokardiographischer Methoden quantifiziert werden?

  • K. Dennig
  • W. Rudolph

Zusammenfassung

Die Quantifizierung von Mitralregurgitationen bei Papillarmuskeldysfunktion aufgrund einer koronaren Herzerkrankung ist mit zwei Besonderheiten verbunden, die die diagnostische Wertigkeit der bei Mitralregurgitationen jeglicher Genese eingesetzten quantitativen Methoden beeinflussen können. Zum einen tritt wegen der in der Regel zarten Segelstrukturen der Mitralis bei transthorakaler Anschallung eine geringe Schallabschwächung im linken Vorhof auf, so daß eine sensitive Registrier-barkeit der Strömungsverhältnisse proximal der Klappe gegeben ist. Dies sollte sich auf die Anwendbarkeit von Quantifizierungsmethoden, die sich auf das Strömungsverhalten im Regurgitationsjet beziehen, vorteilhaft auswirken. Ferner findet sich jedoch aufgrund des Mechanismus eines inkompletten Klappenschlusses bei Papillarmuskeldysfunktion meist ein exzentrisch gerichteter Strömungsjet, der die Wand des Vorhofs kontaktiert [3, 29]. Dies hat für den Einsatz dieser Graduierungsmethoden einen eher ungünstigen Effekt.

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Copyright information

© Dr. Dietrich Steinkopff Verlag, GmbH & Co. KG Darmstadt 1993

Authors and Affiliations

  • K. Dennig
    • 1
  • W. Rudolph
    • 1
  1. 1.Deutsches Herzzentrum MünchenMünchenDeutschland

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