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Related Experiment Videos

Blunted coronary flow reserve in systemic sclerosis.

A Sulli1, M Ghio, G P Bezante

  • 1Division of Rheumatology, Department of Internal Medicine, University of Genoa, Genoa, Italy. albertosulli@unige.it

Rheumatology (Oxford, England)
|January 22, 2004
PubMed
Summary

Coronary flow reserve (CFR) is reduced in systemic sclerosis (SSc) patients, indicating early heart involvement. CFR is lower in diffuse SSc than limited SSc, suggesting potential for non-invasive cardiac assessment.

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Area of Science:

  • Cardiology
  • Rheumatology
  • Medical Imaging

Background:

  • Systemic sclerosis (SSc) can affect the cardiovascular system, often subclinically.
  • Early detection of cardiac dysfunction in SSc is crucial for patient management.
  • Non-invasive methods for assessing cardiac function in SSc are valuable.

Purpose of the Study:

  • To evaluate coronary flow reserve (CFR) using transthoracic Doppler echocardiography in SSc patients.
  • To determine if CFR can detect early cardiovascular dysfunction in SSc.
  • To explore correlations between CFR and disease characteristics.

Main Methods:

  • Forty-four SSc patients and 16 healthy controls underwent contrast-enhanced transthoracic Doppler echocardiography.
  • CFR was measured at rest and during adenosine-induced hyperemia.

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  • Calculations included peak diastolic velocity (PdvCFR) and velocity time integral (VtiCFR).

    • Main Results:

    • CFR (both PdvCFR and VtiCFR) was significantly reduced in SSc patients compared to controls.
    • Patients with diffuse SSc (dSSc) showed significantly lower CFR than those with limited SSc (lSSc).
    • No significant correlation was found between CFR and disease duration, autoantibodies, or lifestyle factors.

    Conclusions:

    • Reduced CFR is common in SSc patients, suggesting subclinical cardiac involvement.
    • Lower CFR in dSSc compared to lSSc highlights potential differences in cardiac impact.
    • Reduced CFR may serve as an indirect marker of cardiac involvement in SSc, warranting further investigation.