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Sequential study of left ventricular function in aortic valvular stenosis

S D Cha, S M Naeem, V Maranhao

    Catheterization and Cardiovascular Diagnosis
    |January 1, 1982
    PubMed
    Summary
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    Serial hemodynamic studies are crucial for monitoring mild to moderate aortic stenosis progression. Left ventricular function can decline unexpectedly, even without worsening aortic valvular gradients or new symptoms.

    Area of Science:

    • Cardiology
    • Cardiovascular Physiology

    Background:

    • Aortic valvular stenosis (AVS) can lead to significant cardiovascular complications.
    • Assessing the progression of aortic valvular gradients (AVG) and its impact on left ventricular (LV) function is critical for patient management.

    Purpose of the Study:

    • To evaluate the sequential progression of AVG in patients with AVS.
    • To determine the relationship between AVG progression and LV function.
    • To identify predictors of AVS progression and LV dysfunction.

    Main Methods:

    • Sequential cardiac catheterization and left ventriculography were performed in 21 patients with AVS.
    • Aortic valvular gradients (AVG) were measured using pullback tracings from the left ventricle to the ascending aorta.
    • Left ventricular ejection fraction and mean velocity of circumferential fiber shortening were assessed from left ventriculograms.

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    Main Results:

    • A new syncopal episode was a helpful predictor of AVG progression in some patients.
    • In most patients, AVG progression was not predictable.
    • Left ventricular contractility was generally normal, but seven patients showed unrecognized progressive impairment not proportional to AVG changes.
    • LV function deterioration occurred independently of AVG progression in some cases.

    Conclusions:

    • Serial hemodynamic studies are indicated for patients with mild to moderate aortic stenosis, even without new symptoms or signs.
    • Left ventricular function can deteriorate despite stable AVG, highlighting the need for regular monitoring.
    • Predicting AVS progression solely based on symptoms like syncope may be insufficient.