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[Right ventricular function in patients with chronic right ventricular infarction].

H Koito1, T Kurimoto, T Sugiura

  • 1Second Department of Internal Medicine, Kansai Medical University, Moriguchi.

Journal of Cardiology
|March 1, 1987
PubMed
Summary
This summary is machine-generated.

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Patients with chronic right ventricular infarction, particularly those in Forrester group III, exhibit significantly impaired right ventricular ejection fraction (RVEF) and increased right ventricular end-diastolic volume index (RVEDVI). This indicates severe right ventricular dysfunction and wall motion abnormalities.

Area of Science:

  • Cardiology
  • Nuclear Medicine
  • Cardiovascular Imaging

Context:

  • Assessing right ventricular (RV) function is crucial in managing patients post-myocardial infarction.
  • Chronic RV infarction can lead to persistent hemodynamic compromise.
  • The Forrester classification stratifies patients based on acute hemodynamic status.

Purpose:

  • To evaluate right ventricular function in patients with chronic right ventricular infarction.
  • To correlate hemodynamic data with objective measures of RV function.
  • To identify specific patterns of RV dysfunction and wall motion abnormalities.

Summary:

  • Tc-99m angiocardiography was performed in 64 patients with chronic right ventricular infarction.
  • Patients were grouped based on acute hemodynamic data (Forrester classification).

Related Experiment Videos

  • Group III patients (n=8), characterized by elevated right atrial pressure, showed significantly lower right ventricular ejection fraction (RVEF) (25 ± 3%) and higher right ventricular end-diastolic volume index (RVEDVI) (150 ± 25 ml/m²) compared to other groups. Right ventricular regional ejection fraction images (RVREFI) revealed inferior and/or septal wall motion abnormalities in Group III. Coronary angiography in six Group III patients identified proximal right coronary artery lesions.

    • Impact:

    • Findings highlight severe RV dysfunction in Forrester group III patients with chronic RV infarction.
    • Demonstrates the utility of Tc-99m angiocardiography in quantifying RV function and regional wall motion.
    • Correlates hemodynamic severity with imaging findings and coronary artery disease.