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Predictors of early mortality in patients with angiographically documented left main coronary artery disease
J K Ko1, R A Nishimura, D R Holmes
1Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, MN 55905.
Insights
Predictors of early death following coronary angiography in patients with significant left main coronary artery disease (LMCAD) include older age and advanced heart failure. Aggressive management is recommended for high-risk LMCAD patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Clinical Outcomes Research
Background:
- Left main coronary artery disease (LMCAD) poses a significant risk for adverse cardiac events.
- Early identification of patients at high risk for mortality after coronary angiography is crucial for timely intervention.
Purpose of the Study:
- To identify clinical predictors of early death within 48 hours after coronary angiography in patients with significant LMCAD (≥60% diameter narrowing).
Main Methods:
- Retrospective review of clinical records of 1,288 patients with LMCAD undergoing coronary angiography between 1978 and 1989.
- Comparison of 21 patients who died within 2 days post-angiography (Group 1) with 85 randomly selected survivors (Group 2).
Main Results:
- Significant predictors of early death included older age, New York Heart Association Class III/IV, shorter duration of unstable angina, elevated left ventricular end-diastolic pressure, and reduced ejection fraction.
- Significant left circumflex artery disease was also associated with increased early mortality.
- Heparin infusion post-angiography was not a significant predictor of early death.
Conclusions:
- Patients with significant LMCAD and identified risk factors (older age, advanced heart failure, specific hemodynamic/angiographic findings) may benefit from earlier surgical intervention or more aggressive medical management.
- These findings aid in risk stratification for patients undergoing coronary angiography for LMCAD.
Abstract:
To determine predictors of early death after coronary angiography in patients with significant left main coronary artery disease (greater than or equal to 60% diameter narrowing, LMCAD), we reviewed the clinical records of patients with LMCAD who died after angiography. Of 1,288 patients with LMCAD studied between January 1978 and October 1989, 21 died within 2 days after angiography (group 1). As a control group, 85 patients were randomly sampled from 1,196 patients who survived at least 30 days after angiography (group 2). The predictors of early death after angiography in patients with LMCAD were older age (P less than 0.05), New York Heart Association Class III or IV (P less than 0.005), shorter duration of unstable angina (P less than 0.005), higher left ventricular end-diastolic pressure (P less than 0.006), lower ejection fraction (P less than 0.005), and significant left circumflex artery disease (P less than 0.006). The use of heparin infusion after angiography did not appear to be a significant factor. It is suggested that earlier operation or more aggressive management be undertaken in patients who, at cardiac catheterization, have significant LMCAD associated with the above-listed variables.