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[Myocardial microvascularization in scleroderma].

A Kahan1, J Y Devaux, S Weber

  • 1Service de rhumatologie, Hôpital Cochin, Paris.

Archives Des Maladies Du Coeur Et Des Vaisseaux
|April 1, 1988
PubMed
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Systemic sclerosis can cause heart problems due to impaired small coronary arteries. Treatments like vasodilators may improve myocardial perfusion defects in scleroderma patients.

Area of Science:

  • Cardiology
  • Rheumatology
  • Medical Imaging

Background:

  • Systemic sclerosis (scleroderma) is associated with myocardial involvement.
  • This cardiac dysfunction may stem from abnormalities in small coronary arteries and arterioles, leading to myocardial ischemia.
  • Assessing coronary artery function is crucial for understanding cardiac complications in systemic sclerosis.

Purpose of the Study:

  • To investigate myocardial perfusion abnormalities in patients with systemic sclerosis.
  • To evaluate the impact of coronary vasodilatation on myocardial perfusion.
  • To explore the potential reversibility and long-term treatment of these perfusion defects.

Main Methods:

  • Coronary reserve was assessed using dipyridamole-induced coronary vasodilatation.

Related Experiment Videos

  • Myocardial perfusion was evaluated using thallium scans (thallium-201).
  • The effects of oral nifedipine and intravenous dipyridamole were studied.

    • Main Results:

    • Coronary reserve was significantly impaired in patients with systemic sclerosis.
    • Thallium scans revealed numerous myocardial perfusion defects in these patients.
    • These perfusion defects showed partial reversibility with nifedipine and dipyridamole treatments.

    Conclusions:

    • Myocardial ischemia is a significant factor in systemic sclerosis-related heart disease.
    • Coronary vasodilators demonstrate potential in partially reversing myocardial perfusion defects.
    • Further long-term studies suggest vasodilators may offer therapeutic benefits for cardiac abnormalities in systemic sclerosis.