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Related Experiment Videos

Two sensitive echocardiographic techniques for detecting doxorubicin toxicity.

S J Goldberg, J J Hutter, L Feldman

    Medical and Pediatric Oncology
    |January 1, 1983
    PubMed
    Summary

    New echocardiogram methods detect early doxorubicin cardiotoxicity in children. These sensitive indicators identify myocardial fibrosis before changes in standard shortening fraction (delta S) are apparent.

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    Area of Science:

    • Cardiology
    • Pediatric Oncology
    • Medical Imaging

    Background:

    • Doxorubicin is a common chemotherapy agent used in pediatric cancer treatment.
    • Doxorubicin can cause significant cardiotoxicity, leading to myocardial fibrosis.
    • Early detection of doxorubicin-induced cardiotoxicity is crucial for patient management.

    Purpose of the Study:

    • To evaluate novel echocardiographic methods for detecting myocardial fibrosis in children treated with doxorubicin.
    • To compare the sensitivity of these new methods against the standard shortening fraction (delta S).

    Main Methods:

    • M-mode echocardiography to assess left ventricular posterior wall (LVPW) thickening-thinning curves.
    • Two-dimensional echocardiography to qualitatively evaluate LVPW contraction at multiple levels.

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  • Comparison of these methods with standard M-mode shortening fraction (delta S).
  • Evaluation of 18 pediatric cancer patients (11 doxorubicin, 7 controls).

    • Main Results:

    • Standard shortening fraction (delta S) was normal in most doxorubicin patients.
    • Abnormal diastolic relaxation of the LVPW was observed in 60% of doxorubicin patients.
    • Contraction deficits in the LVPW were identified in 7 of 11 doxorubicin patients.
    • Slowed relaxation and contraction deficits often occurred together, particularly in the posterior wall.

    Conclusions:

    • M-mode and 2D echocardiographic evaluations of LVPW relaxation and contraction are more sensitive than delta S for detecting early doxorubicin cardiotoxicity.
    • These advanced echocardiographic techniques can identify myocardial fibrosis in pediatric patients before standard measures show abnormalities.
    • This facilitates earlier intervention and management of doxorubicin-induced cardiac damage.