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Myocardial revascularization for the treatment of post-ischemic heart failure

D Pagano1, R S Bonser, P G Camici

  • 1Cardiothoracic Surgical Unit, Queen Elizabeth Hospital Birmingham, London, United Kingdom.

Current Opinion in Cardiology
|December 1, 1999
PubMed

Insights

Coronary artery disease-induced heart failure poses a significant health challenge. Identifying hibernating myocardium with imaging and treating with coronary artery bypass surgery shows promise, warranting further randomized trials.

Area of Science:

  • Cardiology
  • Cardiovascular Surgery
  • Medical Imaging

Background:

  • Heart failure from coronary artery disease (CAD) is a leading cause of mortality.
  • Current medical treatments offer limited improvement in prognosis.
  • Myocardial dysfunction in heart failure can stem from irreversible myocyte loss or viable but dysfunctional (hibernating) myocardium.

Purpose of the Study:

  • To evaluate the role of coronary artery bypass surgery in heart failure patients with hibernating myocardium.
  • To assess the potential for functional recovery of hibernating myocardium post-revascularization.

Main Methods:

  • Noninvasive nuclear imaging techniques, including single-photon emission computed tomography (SPECT) and positron emission tomography (PET), were used to predict hibernating myocardium.
  • Stress echocardiography was also employed for myocardial viability assessment.
  • Uncontrolled studies examined outcomes following coronary artery bypass surgery in selected patients.

Main Results:

  • Noninvasive imaging successfully identified hibernating myocardium in heart failure patients.
  • Uncontrolled studies indicated promising benefits of coronary artery bypass surgery in this population.
  • A substantial amount of hibernating myocardium suggested potential for functional recovery and improved outcomes.

Conclusions:

  • The presence of hibernating myocardium is a key factor in managing heart failure secondary to CAD.
  • Coronary artery bypass surgery demonstrates a promising therapeutic role for patients with significant hibernating myocardium.
  • Further randomized controlled trials are necessary to definitively establish the efficacy of surgical intervention in this patient group.

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