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Related Experiment Videos

[Are post-infarction left ventricular aneurysms distensible? Volumetric study using angiography].

C Verdière, G Drobinksi, M Canny

    Journal De Radiologie
    |February 1, 1984
    PubMed
    Summary

    Post-infarction left ventricular aneurysms often show paradoxical systolic expansion due to shape changes, not true volume increase. This finding impacts understanding aneurysm physiopathology and surgical treatment choices.

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    Area of Science:

    • Cardiology
    • Medical Imaging
    • Physiopathology

    Background:

    • Post-infarction left ventricular aneurysms are characterized by diastolic deformations.
    • These deformations can lead to paradoxical systolic expansion during cardiac cycles.

    Purpose of the Study:

    • To investigate the volumetric consequences of parietal dyskinesia in chronic anterior wall aneurysms.
    • To analyze the relationship between aneurysm shape changes and systolic expansion.

    Main Methods:

    • Left ventriculography was performed in 10 patients with chronic anterior wall aneurysms.
    • Watson's technique was used to delineate aneurysm borders.
    • Computer analysis measured diastolic and systolic volumes and endocardial surface areas.

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    Main Results:

    • In 90% of cases (9 out of 10), aneurysm volume and endocardial surface area remained constant from diastole to systole.
    • True systolic distension of the aneurysm was observed in only one case.
    • Paradoxical systolic expansion was primarily attributed to aneurysm shape changes and overall cardiac motion.

    Conclusions:

    • The study clarifies that paradoxical systolic expansion in most post-infarction aneurysms is not due to increased volume.
    • Findings are crucial for understanding the physiopathology of these aneurysms.
    • Results inform the selection of appropriate surgical treatment techniques.