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Related Experiment Videos

Mitral valve closure in atrial flutter.

M A Greenberg, L S Herman, M V Cohen

    Circulation
    |May 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Atrial flutter can cause early mitral valve closure, even without other heart issues. This finding may alter how premature mitral valve movements are interpreted in patients with atrial flutter and atrioventricular block.

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    Area of Science:

    • Cardiology
    • Cardiac Electrophysiology
    • Echocardiography

    Background:

    • Atrial flutter is a supraventricular tachyarrhythmia.
    • Early mitral valve closure is typically associated with specific conditions in sinus rhythm.
    • The impact of atrial flutter on mitral valve dynamics requires further elucidation.

    Purpose of the Study:

    • To investigate the occurrence and characteristics of early mitral valve closure in patients with atrial flutter.
    • To assess the relationship between atrial flutter, atrioventricular block, and mitral valve behavior.
    • To determine the diagnostic and prognostic implications of premature mitral valve closure in this context.

    Main Methods:

    • Simultaneous echocardiography and phonocardiography were performed on 12 patients with atrial flutter.

    Related Experiment Videos

  • Echocardiographic assessment of mitral valve opening and closure relative to flutter waves and QRS complex.
  • Phonocardiographic analysis of the first heart sound intensity in relation to mitral valve preclosure.

    • Main Results:

    • Early mitral valve closure occurred in some patients with atrial flutter and high-grade atrioventricular block.
    • The intensity of the first heart sound was inversely related to the degree of mitral valve preclosure.
    • Mitral valve preclosure in atrial flutter may not carry the same significance as in sinus rhythm.

    Conclusions:

    • Atrial flutter, independent of other hemodynamic abnormalities, can induce early mitral valve closure.
    • The presence of atrioventricular block influences mitral valve dynamics during atrial flutter.
    • Echocardiographic findings of premature mitral valve closure in atrial flutter may require reevaluation of their diagnostic and prognostic value.