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[Myocardial infarct--morphology and development].

H Frenzel

    Wiener Medizinische Wochenschrift (1946)
    |December 31, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Pathological findings show thrombotic occlusion of "Infarction branch" causes most transmural myocardial infarctions, disproving the myogenic theory. Subendocardial infarctions stem from three-vessel disease, anemia, or tachycardia.

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    Area of Science:

    • Cardiovascular Pathology
    • Myocardial Infarction Etiology

    Context:

    • Investigates the underlying causes of myocardial infarction (MI).
    • Examines pathological findings in transmural and subendocardial MI.
    • Evaluates the role of thrombotic occlusion versus myogenic theories.

    Purpose:

    • To determine the primary cause of transmural myocardial infarction.
    • To differentiate etiological factors in various types of MI.
    • To assess the incidence of complications and associated conditions.

    Summary:

    • Pathological investigation revealed thrombotic occlusion of the "Infarction branch" as the cause in 90% of transmural MIs, refuting the myogenic theory.
    • Subendocardial MI is linked to three-vessel coronary artery disease, anemia, or tachycardia.

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  • Complications include fibrinous pericarditis (30%), mural thrombi (one-third), myocardial rupture (10-15%), and ventricular aneurysm (5-10% in survivors >3 months).

    • Impact:

    • Establishes thrombotic occlusion as the predominant cause of transmural MI.
    • Provides etiological clarity for subendocardial MI.
    • Highlights the frequency of MI-related complications and sudden death causes.