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Echocardiographic left ventricular function in mitral stenosis

Z Halperin, A Karasik, B S Lewis

    Israel Journal of Medical Sciences
    |August 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    Mitral stenosis surgery, both open and closed, did not alter left ventricular function in patients. Pre-existing depressed function in older patients or those with prior mitral valve surgery persisted post-operation.

    Area of Science:

    • Cardiology
    • Cardiac Surgery
    • Echocardiography

    Background:

    • Pure mitral stenosis can affect left ventricular (LV) function.
    • LV function may be compromised by disease duration, age, and prior mitral valve surgery.

    Purpose of the Study:

    • To assess the impact of mitral valvulotomy on left ventricular function.
    • To compare outcomes of open versus closed mitral valvulotomy on LV function.

    Main Methods:

    • Echocardiography was used to measure LV function in 22 patients with pure mitral stenosis.
    • Patients underwent either closed transventricular mitral valvulotomy (13 patients) or open mitral valvulotomy with cardiopulmonary bypass (9 patients).
    • LV function was evaluated preoperatively and 7–12 days postoperatively.

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    Main Results:

    • Preoperative LV function was generally normal but depressed in older patients and those undergoing reoperation.
    • Postoperative echocardiography showed no significant changes in LV dimensions or function (ejection fraction, percentage shortening) after either surgical approach.
    • The duration of mitral valve disease was associated with decreased LV function, likely due to fibrosis.

    Conclusions:

    • Mitral valvulotomy, whether open or closed, does not acutely alter left ventricular function in patients with pure mitral stenosis.
    • Preoperative factors such as age and previous surgery significantly influence baseline LV function.
    • Long-term effects of mitral stenosis on myocardial structure may contribute to persistent LV dysfunction.