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Can patients with left main coronary artery disease wait for myocardial revascularization surgery?

Antônio Sérgio Cordeiro da Rocha1, Paulo Roberto Dutra da Silva

  • 1Instituto Nacional de Cardiologia Laranjeiras, Minist rio da Sa de, Rio de Janeiro, RJ, Brazil. asrocha@cardiol.br

Arquivos Brasileiros De Cardiologia
|March 18, 2003
PubMed

Insights

Patients with left main coronary artery disease awaiting surgery face cardiac events, particularly those with unstable angina. Unstable angina is a significant risk factor, necessitating prompt intervention.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Cardiovascular Surgery

Background:

  • Left main coronary artery disease (LMCD) is a critical condition requiring timely intervention.
  • Patients diagnosed with LMCD often await myocardial revascularization surgery, a period associated with potential cardiac events.

Purpose of the Study:

  • To evaluate the incidence of cardiac events in patients with LMCD awaiting revascularization.
  • To identify risk factors associated with these cardiac events during the waiting period.

Main Methods:

  • A cohort of 56 patients with LMCD (stenosis >= 50%) diagnosed via cardiac catheterization was studied over 8 months.
  • Cardiac events, including death, myocardial infarction, heart failure, unstable angina, and emergency surgery, were recorded.
  • Statistical analysis, including logistic regression, was used to identify predictors of cardiac events.

Main Results:

  • Seven acute myocardial infarctions and one death occurred within 60 days post-catheterization.
  • Patients with unstable angina as the indication for catheterization had a significantly higher risk of events (RR=5.25, p=0.03).
  • Unstable angina independently predicted an increased number of cardiac events (OR=8.43, p=0.02).

Conclusions:

  • Unstable angina is a high-risk factor for cardiac events in patients with LMCD awaiting surgery.
  • Prompt surgical intervention is recommended for patients with LMCD, especially those presenting with unstable angina.
Abstract

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